ATM Cabinet Anchoring Solutions: M20 Anchor Screws, Mounting Design and OEM Fasteners

ATM Cabinet Anchoring Solutions: M20 Anchor Screws for Secure Equipment Installation

Engineering Guide to ATM Floor Fixing, M20 Threaded Fasteners, Concrete Anchoring and OEM Equipment Mounting Hardware

ATM cabinets, cash-handling equipment and self-service terminals must be installed using fastening systems suited to the equipment, supporting structure and intended service environment.

Although an M20 anchor screw may appear to be a simple mechanical component, the performance of an equipment anchoring system depends on more than nominal thread diameter.

A reliable installation requires consideration of the complete connection:

• Equipment weight and center of gravity

• Cabinet mounting geometry

• Base plate material and thickness

• Anchor type and load-transfer mechanism

• Supporting structure and concrete condition

• Tensile, shear and overturning loads

• Anchor spacing and edge distance

• Effective embedment

• Installation procedure

• Corrosion protection

• Maintenance requirements

• Applicable structural and security standards

• OEM production and quality requirements

Juxin Fasteners supplies industrial fastening components and supports drawing-based inquiries for M20 threaded fasteners, special mounting bolts, 

CNC machined components and other OEM equipment fastening hardware.

This guide explains how engineers, production teams and industrial buyers can evaluate fastening solutions for ATM cabinets and related equipment installations.

Why ATM Cabinet Fastening Requires More Than a Standard Screw

An ATM may contain a combination of electronic equipment, cash-handling mechanisms, displays, service doors, security components and mechanical structures.

The mounting system must work with the complete cabinet design.

Depending on the equipment and installation site, engineers may need to account for:

• Static equipment weight

• Forces associated with opening service doors

• Accidental impact

• Vibration

• Overturning effects

• Supporting-floor characteristics

• Outdoor exposure

• Installation accessibility

• Security-related requirements

The correct fastening system is not necessarily the one with the largest bolt diameter.

The appropriate solution is the one whose complete load path, installation method and required performance have been established.

ATM Cabinet Mounting vs ATM Safe Anchoring

General ATM cabinet mounting and security-rated ATM safe anchoring are related but different engineering applications.

General ATM Cabinet Mounting

This may involve securing the outer enclosure, equipment frame, accessory structure or mounting base.

The relevant requirements depend on equipment geometry, mechanical loading and site conditions.

ATM Safe Anchoring

An ATM safe is a security-related component that may be subject to burglary-resistance requirements.

Where a particular ATM safe has been tested and certified with a specified anchoring arrangement, the approved installation configuration must be followed.

An ordinary M20 threaded fastener should not be assumed to provide the same security performance as an approved anchoring system.

Engineering Insight

The security rating of an ATM safe cannot be inferred from the diameter or material grade of one bolt.

The complete safe, base, anchoring arrangement and applicable certification conditions matter.

Understanding M20 Anchor Screws and Anchor Bolts

The term M20 anchor screw is used in industrial purchasing, but it does not identify one universal anchor design.

M20 specifies a nominal metric thread diameter of 20 mm.

A common ISO metric coarse-thread designation is M20 × 2.5.

However, the M20 designation alone does not define:

• Anchor mechanism

• Overall length

• Threaded length

• Head geometry

• Drilled-hole diameter

• Effective embedment depth

• Installation torque

• Steel strength

• Concrete resistance

• Corrosion protection

• Approval status

For accurate sourcing, the buyer must identify the exact component type and drawing.

Anchor Bolt

A broad term that may describe cast-in or post-installed anchoring components.

Concrete Screw Anchor

A specially designed anchor that develops resistance through thread engagement with concrete.

Mechanical Expansion Anchor

An anchor that transfers load into the supporting material through a mechanical expansion mechanism.

Bonded Anchor Rod

A threaded element forming part of a specified adhesive anchoring system.

Conventional Threaded Bolt

A bolt intended to connect mechanical components through compatible threads, nuts or tapped holes.

A conventional M20 bolt is not automatically a qualified concrete anchor.

Why the Distinction Matters

Two products may both have M20 threads while requiring completely different installation procedures and providing different anchoring performance.

A substitution must therefore be evaluated against the actual application requirements.

M20 Thread Specifications and OEM Drawing Requirements

For a drawing-based M20 component, engineers should specify the relevant geometry and material requirements.

Typical drawing information includes:

• Thread designation and pitch

• Thread tolerance

• Overall length

• Threaded length

• Shank diameter

• Head or drive configuration

• Washer arrangement

• Material

• Mechanical property requirements

• Surface treatment

• Dimensional tolerances

• Inspection requirements

Metric and Inch Thread Systems

Metric and Unified inch threads must be treated as separate systems.

For example, M20 × 2.5 is not interchangeable with a similar-diameter UNC or UNF threaded component.

BSW and BSF threads also have different thread characteristics.

Any proposed substitution must be reviewed against the mating components and engineering drawing.

Thread Engagement

Adequate thread engagement depends on the materials, strength requirements and connection geometry.

Where a threaded bolt is used with a nut, the nut and bolt properties must be compatible.

Where the component forms part of an approved concrete anchoring system, the complete anchor assembly and its installation instructions govern.

Types of Anchoring Systems Used in Industrial Equipment

Mechanical Expansion Anchors

Mechanical expansion anchors use an expansion mechanism to develop resistance within the supporting material.

Important selection factors include:

• Concrete condition

• Approved anchor dimensions

• Edge distance

• Anchor spacing

• Concrete thickness

• Installation procedure

• Applied loads

Concrete Screw Anchors

Concrete screw anchors use specially designed threads to engage with concrete.

Their geometry, drilling requirements and installation procedures must be taken from the specific product documentation.

Bonded Anchoring Systems

Bonded anchors combine an approved adhesive system with a compatible threaded rod or other anchoring element.

Performance depends on factors such as:

• Base material

• Hole preparation

• Adhesive system

• Installation temperature

• Curing conditions

• Embedment depth

Cast-In Anchors

Cast-in anchor bolts are positioned before concrete placement.

Their installation and design requirements differ from those of post-installed anchors.

Custom Threaded Mounting Components

Special bolts, threaded studs, nuts and machined mounting components may form part of an equipment installation.

Juxin Fasteners can review such components against customer drawings.

However, manufacturing a custom threaded component does not automatically establish that it has been qualified as a concrete anchor.

Concrete Anchoring Design: What Engineers Must Check

The supporting structure is a critical part of the fastening system.

For concrete installations, engineers may need to evaluate:

• Concrete compressive strength

• Cracked or uncracked concrete

• Slab thickness

• Anchor embedment

• Edge distance

• Anchor spacing

• Reinforcement arrangement

• Loading direction

• Anchor group behavior

Cracked Concrete

Concrete cracking can influence anchor resistance.

An anchor intended only for uncracked concrete should not automatically be specified for applications requiring cracked-concrete performance.

Edge Distance

Anchors positioned near a concrete edge may experience reduced resistance or increased risk of splitting and breakout.

Anchor Spacing

Closely spaced anchors may have interacting concrete failure zones.

Concrete Thickness

The supporting member must be thick enough for the selected anchor and its required installation conditions.

Effective Embedment

Embedment depth influences load transfer into the supporting material.

It is not determined by M20 thread diameter alone.

Important Design Rule

Minimum edge distance, spacing, concrete thickness and installation dimensions must come from the specific anchor's approved technical data and the applicable engineering design.

Understanding Tension, Shear and Overturning Loads

Tension

Tensile loading acts along the anchor axis and may arise from overturning or other uplift effects.

Shear

Shear loading acts across the anchor and may arise from lateral forces.

Combined Loading

Real equipment installations may experience tension and shear simultaneously.

Overturning Moment

Equipment geometry and applied forces can produce overturning moments that increase tension in certain anchors.

Anchor Group Effects

Where several anchors support a cabinet, the load may not be distributed equally.

The distribution depends on:

• Anchor positions

• Base plate stiffness

• Equipment geometry

• Load direction

• Supporting material behavior

Engineering Insight

A cabinet with four mounting holes does not necessarily place one-quarter of every load on each anchor.

The anchor group must be evaluated according to the actual connection design.

Common Anchor Failure Modes

Possible failure modes include:

• Steel failure

• Concrete breakout

• Pullout

• Concrete splitting

• Concrete edge failure

• Pryout under shear

• Mounting plate deformation

• Thread failure

The governing failure mode may be associated with the concrete or mounting plate rather than the steel bolt itself.

Base Plate Design for ATM Cabinets

The cabinet base plate transfers equipment forces into the anchor system.

Engineers should review:

• Plate thickness

• Material grade

• Hole dimensions

• Hole positioning

• Local reinforcement

• Bearing surfaces

• Washer geometry

• Welded connections

• Tool access

Oversized Mounting Holes

Oversized holes may help accommodate installation tolerances, but they can also affect bearing and load transfer.

Suitable washers, plates or other approved details may be necessary.

Thin Sheet-Metal Bases

Thin cabinet structures may deform around mounting holes.

A stronger anchor does not automatically prevent local sheet-metal failure.

Mounting Hole Alignment

Poor alignment can increase installation time, cause rework and create unwanted assembly stresses.

Production Engineering Insight

A well-designed mounting arrangement should balance mechanical requirements with repeatable installation.

For OEM manufacturers, hole location tolerance and tool access can be as important as the fastener's nominal size.

Installation Torque: Why There Is No Universal M20 Value

Different anchor designs use different installation mechanisms.

A torque-controlled expansion anchor may rely on tightening to activate its expansion system.

A concrete screw anchor may have a different installation procedure.

A bonded anchor system requires control of its adhesive installation and curing process.

Therefore, no single installation torque can be recommended for every M20 anchor screw or bolt.

Drilled-Hole Diameter

The required drilled-hole diameter must be taken from the actual anchor's installation documentation.

It cannot be determined solely from the nominal M20 thread designation.

Hole Preparation

Improper drilling or cleaning may reduce the performance of certain anchoring systems.

Installation Inspection

Depending on the product and project, inspection may include:

• Product identification

• Hole location

• Installation depth

• Correct setting procedure

• Tightening verification

• Visual inspection

• Installation documentation

Important Limitation

Inspection methods and acceptance criteria must follow the actual product specification and project requirements.

International Standards for Equipment Anchoring

EN 1992-4: Design of Fastenings for Use in Concrete

EN 1992-4 provides European design rules for fastening systems used in concrete.

Relevant engineering considerations include:

• Tension resistance

• Shear resistance

• Concrete failure modes

• Anchor groups

• Edge distance

• Spacing

• Combined loading

The design must use performance information appropriate to the selected anchoring product.

European Technical Assessment

For products covered by an applicable European Technical Assessment, the ETA provides product-specific assessed characteristics and conditions of use.

A conventional M20 threaded component should not be described as ETA-approved unless that status has been established for the actual product.

ACI 318 Chapter 17

ACI 318 Chapter 17 addresses anchoring to concrete in applicable North American structural design.

It includes design provisions for relevant anchor types and failure mechanisms.

The governing edition depends on the adopted building code and project requirements.

ACI 355.2

ACI 355.2 addresses qualification of post-installed mechanical anchors in concrete.

Where required, the selected product must have the relevant qualification evidence.

EN 1143-1: ATM Safe Security Requirements

EN 1143-1 addresses burglary resistance of specified secure storage units, including ATM safes.

Where applicable, the anchoring arrangement forms part of the security-related equipment requirements.

The relevant edition and certified installation configuration must be confirmed.

Engineering Boundary

Conformity to a metric thread standard does not establish compliance with a concrete anchor qualification standard or an ATM safe security standard.

These requirements address different aspects of performance.

ATM Installation and Security Considerations

ATM equipment may be installed in:

• Bank branches

• Retail premises

• Transportation facilities

• Commercial buildings

• Outdoor banking locations

• Self-service banking areas

The anchoring requirements depend on the equipment model, site conditions and applicable specifications.

Security-Rated ATM Safes

Where an ATM safe has an approved anchoring configuration, installers should follow the manufacturer's instructions.

Substituting a different anchor solely because it has the same M20 thread may compromise the approved installation.

Installation Records

Depending on the project, records may include:

• Approved mounting drawing

• Anchor product identification

• Supporting structure information

• Installation procedure

• Inspection records

• Site acceptance documentation

Engineering Insight

For security-sensitive equipment, traceability of the installed anchoring system may be as important as the traceability of the individual fastener batch.

Corrosion Protection for Indoor and Outdoor ATM Equipment

Environmental exposure can affect fastener performance over time.

Outdoor equipment may experience:

• Rainwater

• Condensation

• Atmospheric pollutants

• Temperature cycling

• Deicing salts

• Coastal exposure

Carbon Steel

Carbon steel fasteners may use suitable protective coatings, depending on the product and environment.

Examples include:

• Zinc plating

• Zinc-nickel plating

• Other specified coating systems

Stainless Steel

Stainless steel may be appropriate for selected corrosive environments.

However, stainless steel should not automatically replace a specified high-strength carbon steel anchor.

Mechanical properties, corrosion requirements and product qualification must be considered.

Dissimilar Metals

Galvanic corrosion may occur where dissimilar metals are in electrical contact in the presence of an electrolyte.

The complete mounting assembly should be reviewed.

Coating and Installation Compatibility

Surface treatment may affect:

• Thread friction

• Installation torque

• Thread fit

• Corrosion protection

• Assembly consistency

For a qualified anchoring system, component or coating changes must be evaluated against its approval conditions.

Hydrogen Embrittlement

Certain high-strength steel components may be susceptible to hydrogen embrittlement.

Where relevant, material hardness, manufacturing processes, coating methods and service conditions require evaluation.

Common ATM Cabinet Anchoring Problems

Industrial Equipment Anchoring Beyond ATM Cabinets

The same engineering principles apply to other equipment categories, although the required fastening systems may differ.

Self-Service Kiosks and Payment Terminals

Potential applications include:

• Payment kiosks

• Ticketing machines

• Vending machines

• Access-control terminals

• Automated service equipment

Important considerations include equipment stability, service access and installation consistency.

Electrical Cabinets and Control Equipment

Potential applications include:

• Electrical enclosures

• Control cabinets

• Power distribution equipment

• UPS systems

• Auxiliary mounting frames

Suitable fasteners may include mounting bolts, nuts, spacers and other cabinet hardware.

Concrete anchors must be selected separately according to the supporting structure and design.

Industrial Machinery

Machines and production equipment may require floor anchoring.

Important considerations include:

• Dynamic loads

• Vibration

• Alignment

• Foundation stiffness

• Maintenance access

Rail and Transportation Equipment

Auxiliary equipment, cabinets and station installations may require project-specific fastening systems.

Safety-critical applications require the applicable industry and project approvals.

Automotive Manufacturing Equipment

Production fixtures, machine bases and automation equipment may use engineered mounting components.

Production repeatability, alignment and installation efficiency are important.

Infrastructure Equipment

Outdoor control cabinets and auxiliary infrastructure equipment may require anchoring systems designed for structural loads and environmental exposure.

AI Data Center and Power Equipment

Selected UPS units, cooling equipment and auxiliary electrical installations may use floor-mounted fastening systems.

Not every data center cabinet requires M20 anchoring.

The correct specification depends on the equipment and project design.

Equipment Fastening Application Matrix

OEM Fastening Solutions for ATM Manufacturers

An ATM manufacturer may require several categories of fasteners within the same equipment platform.

These can include:

• Equipment mounting bolts

• M20 threaded components

• Hex nuts and locking nuts

• CNC machined spacers

• Self-clinching nuts

• Self-clinching studs

• Self-clinching standoffs

• Blind rivet nuts

• Cage nuts

• Custom threaded components

Each product serves a different purpose.

For example, a self-clinching nut may provide an internal threaded attachment point in sheet metal, but it is not automatically a qualified floor anchor.

Custom M20 Threaded Components

Juxin Fasteners can review customer drawings for:

• Special overall lengths

• Threaded length requirements

• Custom shank geometry

• Special head designs

• Drawing-specified materials

• Surface treatments

• CNC machined details

• Inspection requirements

Specific manufacturing feasibility must be confirmed for the requested design.

Why OEM Drawings Matter

A drawing provides the basis for:

• Dimensional conformity

• Material specification

• Production planning

• Inspection

• Quality documentation

• Repeat ordering

For anchoring-related components, the drawing should also identify the intended function and any required product approval.

Manufacturing and Production Considerations

Depending on the component, the manufacturing route may include:

• Material preparation

• Forming or machining

• Thread production

• Secondary processing

• Heat treatment where specified

• Surface treatment

• Inspection

• Packaging

The actual process depends on the product design.

Production Consistency

Manufacturing and production managers should consider:

• Thread accuracy

• Critical dimensional tolerances

• Part identification

• Installation compatibility

• Packaging consistency

• Inspection requirements

• Rework prevention

Installation-Kit Planning

For repeated equipment installations, a project-specific hardware kit may simplify picking and assembly.

Such a kit could contain the approved quantity of identified bolts, nuts, washers or related mounting components.

The contents must match the approved installation design.

Commercial Insight

A slightly higher component cost may be justified if it reduces installation errors, rework or assembly time.

The evaluation should consider total installed cost rather than unit price alone.

Quality Control for OEM Fasteners

Quality requirements should be established according to the drawing and customer specification.

Dimensional Inspection

Potential checks include:

• Overall length

• Thread dimensions

• Critical diameters

• Head geometry

• Drawing tolerances

Material Verification

Material documentation or testing may be required by the customer.

Mechanical Properties

Where specified, mechanical testing may address relevant strength or hardness requirements.

Surface Inspection

Potential checks include coating condition, appearance and specified surface characteristics.

Thread Gauging

Suitable thread gauges help verify compatibility with the intended mating component.

Traceability

OEM projects may require lot identification and associated quality records.

Important Distinction

Passing dimensional and mechanical inspection does not, by itself, qualify a component as an approved concrete anchor.

Anchoring performance requires the relevant system-level evidence.

Supplier Development and Procurement Evaluation

Supplier qualification should include technical, quality and commercial considerations.

Technical Scope

Confirm whether the required product is:

• A conventional threaded fastener

• A custom mounting component

• A mechanical concrete anchor

• A concrete screw anchor

• Part of a qualified anchoring assembly

Specification Control

Confirm the drawing, material, coating, thread and inspection requirements.

Qualification Evidence

Where applicable, request the required ETA, evaluation report, test documentation or OEM approval.

Manufacturing Feasibility

Confirm whether the supplier can produce the requested geometry and quantity.

Quality Requirements

Agree on inspection criteria, documentation and traceability.

Commercial Requirements

Review:

• MOQ

• Sample quantity

• Initial production volume

• Annual forecast

• Lead time

• Packaging

• Delivery destination

• Change-control requirements

Supply Chain Continuity

For repeated OEM orders, consistency of product definition and approved specifications is important.

An alternative supplier should not introduce unapproved changes to a qualified anchoring system.

Why Work with Juxin Fasteners?

Juxin Fasteners has more than 20 years of experience serving industrial and OEM fastener customers.

Our product portfolio includes threaded fasteners, locking nuts, sheet-metal fastening components and custom machined parts.

For ATM cabinet manufacturers and industrial equipment suppliers, relevant support may include:

• Drawing-based M20 threaded components

• Custom mounting bolts

• Special nuts and related hardware

• CNC machined spacers and standoffs

• Sheet-metal fastening components

• Material and coating selection review

• Customer-specified inspection requirements

• OEM packaging and bulk supply inquiries

Our role is to help customers source components that match their engineering and purchasing specifications.

Where a project requires certified concrete anchors or security-rated ATM safe anchoring, the relevant product approval and installation configuration must be established separately.

Frequently Asked Questions

What is an M20 anchor screw?

It is a term used for certain anchoring-related components with a nominal 20 mm metric thread. 

The exact anchor design must be identified separately.

Is M20 × 2.5 a standard metric thread?

Yes. It is a common ISO metric coarse-thread designation, but it does not define the anchor's capacity or installation requirements.

Can any M20 bolt secure an ATM cabinet to concrete?

No. The fastener must be appropriate for the supporting structure, load conditions and specified anchoring system.

What is the difference between an anchor bolt and a concrete screw anchor?

They may transfer loads through different mechanisms. 

A concrete screw anchor uses specially designed thread engagement with concrete, while other anchors may use expansion, bonding or cast-in anchorage.

How much load can an M20 anchor carry?

There is no universal capacity based on thread diameter alone. 

The capacity depends on the anchor system, material, concrete conditions, geometry and design requirements.

What is the required embedment depth for an M20 anchor?

It depends on the selected anchor and its approved technical documentation.

What tightening torque should be used?

Use the installation procedure specified for the actual anchoring product.

Can M20 anchors be used in cracked concrete?

Only where the selected system is suitable for the specified cracked-concrete conditions.

What is EN 1992-4?

It provides European design rules for fastenings used in concrete.

What is ACI 318 Chapter 17?

It provides anchoring-to-concrete design provisions for applicable North American projects.

What is EN 1143-1?

It addresses burglary resistance for specified secure storage units, including ATM safes.

Does a larger M20 fastener automatically provide better ATM security?

No. Security depends on the approved equipment and anchoring configuration.

Can stainless steel replace a carbon steel anchor?

Not without evaluating mechanical properties, corrosion behavior and the relevant approval requirements.

Can Juxin Fasteners support custom M20 fasteners?

Juxin Fasteners accepts customer drawings for technical and manufacturing feasibility review.

What should purchasing teams include in an ATM fastener RFQ?

They should provide the product drawing, application, dimensions, material, coating, required quantity, quality requirements and any applicable anchor qualification documents.

ATM Cabinet Anchoring and M20 Fastener RFQ Checklist

Equipment Details

• ATM or equipment model

• Cabinet dimensions

• Equipment weight

• Mounting configuration

• Base plate drawing

• Mounting-hole positions

Fastener Details

• Product type

• M20 thread specification

• 2D drawing

• 3D model if available

• Overall length

• Threaded length

• Head configuration

• Material

• Mechanical requirements

• Surface treatment

Supporting Structure

• Base material

• Concrete strength where applicable

• Concrete condition

• Slab thickness

• Edge distance

• Anchor spacing

Engineering Requirements

• Design tension

• Design shear

• Overturning loads

• Environmental conditions

• Applicable design standard

• Required product qualification

Installation Requirements

• Installation method

• Embedment requirements

• Drilling specifications

• Setting procedure

• Tooling access

• Inspection requirements

Quality and Documentation

• Dimensional inspection

• Thread gauging

• Material documentation

• Mechanical testing where required

• Coating requirements

• Traceability

• Installation records

Commercial Requirements

• Sample quantity

• Initial order quantity

• Annual demand

• MOQ expectations

• Delivery schedule

• Packaging

• Destination

Request a Custom M20 Fastener or ATM Cabinet Mounting Hardware Quotation

Juxin Fasteners welcomes inquiries from:

• ATM and banking equipment manufacturers

• Self-service kiosk manufacturers

• Industrial enclosure OEMs

• Mechanical and structural engineers

• Manufacturing engineers

• Production managers

• Procurement and purchasing specialists

• Supplier development teams

• Supply chain managers

If your project requires M20 threaded fasteners, special mounting bolts, machined spacers, locking nuts or other OEM equipment fastening components, 

send us your drawing and application requirements.

For concrete anchoring or security-rated ATM safe installations, include the required approved anchor specification and relevant installation documentation.

Our team can review the component requirements and discuss manufacturing feasibility, material selection, inspection and quotation.

Company: Juxin Fasteners

Website: https://www.juxinfasteners.com/

Email: info@juxinfasteners.com

Reliable ATM equipment installation begins with the complete connection: the cabinet, mounting plate, fastener, 

anchoring system, supporting structure and controlled installation process.