Screw-Mount Nuts – Three-Hole Flanged Barrel Nuts

Screw-Mount Nuts – Three-Hole Flanged Barrel Nuts for OEM Assemblies

Juxin Fasteners manufactures screw-mount nuts featuring circular flanged bases, three mounting holes and internally threaded cylindrical barrels.

These fasteners provide reusable metal threads in panels and assemblies where conventional tapping may be impractical or where a mechanically attached threaded component is preferred.

Commonly described as three-hole screw-mount nuts, flanged barrel nuts, screw-mounted threaded nuts and round-base mounting nuts, these components can be secured using appropriately selected screws or rivets.

Juxin Fasteners supports drawing-based manufacturing of steel screw-mount nuts for furniture, equipment panels, industrial fixtures and OEM assembly applications.

Screw-Mount Nut Design and Function

A screw-mount nut combines a circular base with an internally threaded barrel extending from the center.

Three mounting holes are distributed around the base to accommodate mechanical fasteners.

The circular flange provides a bearing surface against the supporting panel, while the threaded barrel accommodates a compatible machine screw, bolt or threaded stud.

The mounting holes allow the nut to be secured without relying on the central threaded connection for retention.

Key Product Features

• Circular flanged base with three mounting holes.

• Internally threaded cylindrical barrel.

• Mechanical attachment using screws or rivets.

• Reusable internal machine threads.

• Alternative installation orientations.

• Steel construction with optional zinc-plated finishes.

• Metric and Unified inch thread configurations.

• Custom base diameters and barrel lengths.

• Drawing-based OEM manufacturing.

The performance of the installed nut depends on the supporting material, mounting fasteners, hole spacing, flange dimensions and applied loads.

Technical Specifications – Screw-Mount Nuts

Thread sizes listed are engineering and market references. Exact available combinations must be confirmed against Juxin Fasteners' approved drawings and manufacturing records.

Metric Screw-Mount Nut Specifications

Metric configurations may be specified for industrial equipment, furniture hardware and machinery assemblies.

These inch values represent nominal diameter conversions only and do not indicate interchangeable inch threads.

M6 Screw-Mount Nuts

M6 configurations may be suitable for furniture hardware, mounting brackets and medium-size panel connections.

M8 Screw-Mount Nuts

M8 configurations may be used in larger equipment mounting and furniture frame applications.

M10 Screw-Mount Nuts

M10 configurations can be evaluated for larger threaded joints requiring suitable flange dimensions and supporting material strength.

M12 Screw-Mount Nuts

M12 configurations may be considered for larger industrial assemblies, subject to engineering and manufacturing feasibility.

The thread size alone does not establish the load capacity of the installed nut.

UNC and UNF Inch Thread Sizes for North American OEMs

Screw-mount nuts are commonly specified with Unified inch threads in North American industrial applications.

These configurations are used in the North American screw-mount nut market. Their availability in a particular Juxin Fasteners design requires engineering confirmation.

1/4-20 UNC Screw-Mount Nuts

A relevant thread configuration for furniture hardware, equipment mounting and general panel assemblies.

5/16-18 UNC Screw-Mount Nuts

Used in larger threaded mounting applications where the base dimensions and attachment fasteners provide adequate retention.

3/8-16 UNC Screw-Mount Nuts

Suitable for evaluation in larger panel and equipment connections requiring a corresponding barrel diameter and mounting base.

1/2-13 and 5/8-11 UNC Screw-Mount Nuts

Larger Unified thread configurations may be considered for specialized industrial mounting requirements.

Base dimensions, mounting hole geometry and manufacturing feasibility must be confirmed before quotation.

Metric and Inch Thread Compatibility

Metric, UNC and UNF thread systems are not directly interchangeable.

For example:

• M6 × 1.0 is not interchangeable with 1/4-20 UNC.

• M8 × 1.25 is not interchangeable with 5/16-18 UNC.

• M10 × 1.5 is not interchangeable with 3/8-16 UNC.

• #10-24 UNC is not interchangeable with #10-32 UNF.

All engineering drawings and purchase orders should specify the exact thread designation and required tolerance class.

Installation Methods – Screws and Rivets

Screw-mount nuts can be installed using different mechanical attachment methods depending on the panel material and assembly requirements.

Screw-Mounted Installation

The nut is positioned against the supporting panel and secured using appropriately sized screws through the three mounting holes.

This method may be suitable for furniture panels, wooden components and equipment mounting assemblies.

The screw type, diameter, length and installation torque must be selected according to the supporting material.

Rivet-Mounted Installation

For suitable sheet metal and industrial panel assemblies, rivets may be used through the mounting holes.

Rivet selection must account for panel thickness, hole diameter, grip range and required joint strength.

Barrel-Through-Hole Installation

The threaded barrel may extend through a prepared clearance hole in the supporting panel.

This configuration allows the flange to seat against the panel while positioning the threaded barrel within the assembly.

The clearance hole must accommodate the barrel without interfering with the mounting holes or fasteners.

Barrel-Up Installation

In suitable applications, the nut can be installed with the barrel facing away from the supporting surface.

This arrangement can provide a threaded mounting point on thin panels that cannot accommodate a sufficiently deep tapped hole.

The supporting panel and mounting fasteners must still provide adequate mechanical retention.

Flanged Base – Load Distribution and Retention

The circular flange provides a bearing surface around the central threaded barrel.

Its diameter and thickness influence local load distribution and installation geometry.

A larger flange can provide more bearing area when the supporting material and assembly arrangement permit.

However, flange size alone does not establish joint strength.

The complete fastening system must account for:

• Supporting material strength.

• Mounting screw or rivet capacity.

• Flange dimensions.

• Barrel dimensions.

• Applied axial and lateral loads.

• Vibration and cyclic loading.

• Installation quality.

Barrel Length and Thread Engagement

Barrel height is an important dimension because it influences the available internal thread engagement.

A longer barrel may accommodate additional thread engagement, provided that the internal thread extends sufficiently and the mating screw has adequate clearance.

Engineers should distinguish between overall barrel height and usable thread depth.

An excessively long mating screw may interfere with surrounding components or bottom out in a blind threaded configuration.

Steel Material and Surface Finish

Steel screw-mount nuts provide a practical solution for furniture and industrial mounting applications.

Material grade and mechanical properties should be specified according to the engineering drawing.

Zinc-Plated Steel

Zinc plating provides corrosion protection compared with unfinished steel.

It is commonly used for indoor industrial equipment, furniture hardware and general panel assemblies.

Corrosion performance depends on coating thickness, passivation treatment and service environment.

Zinc plating alone should not be assumed suitable for prolonged outdoor or aggressive chemical exposure.

Alternative Surface Finishes

Juxin Fasteners can evaluate drawing-specified finishes, including different zinc-plating systems or other compatible protective coatings.

Surface finish selection should account for corrosion requirements, dimensional tolerances and appearance.

Screw-Mount Nuts vs. Other Threaded Fastening Solutions

Screw-mount nuts are particularly useful where a mechanically attached threaded component is required.

They should not be treated as direct substitutes for clinching nuts, tee nuts or weld nuts without evaluating the complete joint design.

Industrial Applications and OEM Assembly Solutions

Furniture Manufacturing

Screw-mount nuts can provide threaded mounting points for furniture components and removable hardware.

Typical applications include:

• Bed frames.

• Sofa frames.

• Furniture legs.

• Dining tables.

• Wooden support panels.

• Modular furniture assemblies.

• Commercial seating components.

For furniture design engineers, mounting hole spacing, screw retention, panel thickness and threaded barrel engagement are important selection factors.

Cabinetry and Interior Fixtures

Screw-mount nuts may be used for removable brackets and hardware attached to suitable wooden or engineered panels.

Applications include:

• Cabinet mounting components.

• Adjustable furniture supports.

• Removable interior panels.

• Display fixtures.

• Modular storage assemblies.

The supporting material must provide adequate screw or rivet retention.

Industrial Equipment and Machinery

Three-hole screw-mount nuts can provide reusable threaded connections in suitable equipment panels and fixtures.

Potential applications include:

• Machine covers.

• Equipment mounting panels.

• Industrial fixtures.

• Removable brackets.

• Access panels.

• Production assembly jigs.

For manufacturing engineers, the nut design should be coordinated with panel thickness, fastener accessibility and required service loads.

Electrical Enclosures and Control Cabinets

Screw-mount nuts may be used in suitable electrical enclosure components where a mechanically attached threaded mounting point is required.

Potential applications include:

• Internal equipment mounting.

• Removable brackets.

• Cabinet accessory panels.

• Serviceable equipment covers.

Material compatibility, electrical clearance, grounding requirements and enclosure certification must be evaluated separately.

Commercial Seating and Medical Equipment

Screw-mount nuts may be considered for selected commercial seating and medical equipment components.

Examples include noncritical mounting brackets, removable covers and accessory panels.

Safety-critical or patient-supporting connections require application-specific engineering validation and applicable regulatory compliance.

Fitness Equipment and Recreational Products

Suitable applications may include:

• Equipment covers.

• Accessory mounting panels.

• Noncritical brackets.

• Removable equipment components.

Primary structural or safety-related connections require appropriate qualification.

Outdoor Equipment and Service Panels

Zinc-plated screw-mount nuts may be considered for protected outdoor equipment compartments and service panels where environmental conditions are controlled.

For continuous outdoor exposure, coating performance and material selection must be verified against the intended service environment.

Engineering Considerations for Design and Mechanical Engineers

Base Diameter and Thickness

The base must provide adequate mounting area while fitting within the available assembly space.

Base thickness influences stiffness and potential deformation during installation.

Mounting Hole Diameter and Position

The three mounting holes must match the selected screws or rivets.

Hole spacing and edge distance should be defined on the approved drawing.

Barrel Diameter and Height

The barrel must fit within the available clearance hole and provide the required thread engagement.

Thread Alignment

The threaded barrel must be aligned with the mating component to reduce cross-threading and assembly interference.

Mounting Fastener Selection

Screw and rivet dimensions must be coordinated with panel thickness, material and applied loads.

Vibration and Loosening

The three-hole mounting arrangement provides multiple attachment points but does not automatically prevent fastener loosening.

Where vibration is present, the complete joint may require appropriate locking measures or validated assembly controls.

Application-Specific Load Testing

Mechanical validation may include axial pull-out, shear loading, mounting fastener retention, cyclic loading and assembly torque testing.

The required tests depend on the intended application.

OEM Manufacturing Capabilities – Juxin Fasteners

Juxin Fasteners is an industrial fastener manufacturer supporting OEM and ODM production programs.

Our manufacturing capabilities include cold heading, cold forming, CNC machining and secondary metalworking operations.

For screw-mount nuts, the production process is selected according to the approved geometry, material, flange design, barrel dimensions and production quantity.

Depending on the part design, manufacturing may involve forming, piercing, threading, secondary machining and surface finishing.

Drawing-Based Customization

Juxin Fasteners can evaluate custom requirements for:

• Metric internal threads.

• UNC and UNF inch threads.

• Base diameters.

• Base thicknesses.

• Barrel outside diameters.

• Barrel heights.

• Mounting hole diameters.

• Mounting hole positions.

• Material grades.

• Surface finishes.

• OEM part identification.

• Packaging and inspection requirements.

All custom configurations are subject to engineering review and manufacturing feasibility confirmation.

Dimensional Inspection and Quality Control

Inspection requirements may include:

• Internal thread GO/NO-GO gauge inspection.

• Base diameter and thickness.

• Barrel outside diameter.

• Barrel height and usable thread depth.

• Mounting hole diameter.

• Mounting hole position.

• Thread alignment.

• Surface finish inspection.

• Coating thickness when specified.

• Material verification.

• Drawing-based dimensional inspection.

• Packaging and batch identification.

Metric internal threads may be specified according to applicable ISO thread requirements.

Unified inch threads may be specified according to ASME B1.1.

The exact thread tolerance class and acceptance criteria should be defined on the approved drawing.

Production Efficiency for OEM Assembly

For production managers, screw-mount nut selection can influence assembly cycle time, installation consistency and rework rates.

Important considerations include:

• Mounting hole preparation.

• Screw or rivet installation sequence.

• Repeatable nut positioning.

• Thread alignment.

• Installation torque control.

• Access for installation tools.

• Compatibility with assembly fixtures.

• Reduced panel damage.

• Consistent batch dimensions.

• Inspection efficiency.

A validated installation process can improve repeatability in high-volume production.

Procurement Considerations for International OEMs

For procurement development specialists, purchasing managers and supply chain managers, screw-mount nut sourcing should consider:

• Approved engineering drawings.

• Thread designation and tolerance.

• Material specification.

• Surface finish requirements.

• Base and barrel dimensions.

• Mounting hole geometry.

• Production quantity.

• Inspection documentation.

• Packaging requirements.

• Repeat-order consistency.

• Production lead time.

• Drawing revision control.

Juxin Fasteners focuses on manufacturing supply for industrial OEM and ODM customers.

We support international procurement programs involving standard and customized fasteners for North America, South America, Europe and other markets.

Frequently Asked Questions

What is a screw-mount nut?

A screw-mount nut is a threaded fastener with a mounting base that can be secured to a panel or component using screws or rivets.

What is the purpose of the three mounting holes?

The three mounting holes provide attachment points for securing the nut to the supporting material.

Can screw-mount nuts be used on thin panels?

Yes, suitable designs can provide threaded connections on thin panels that cannot accommodate a sufficiently deep tapped hole.

Can the threaded barrel pass through a panel?

Yes. The barrel can extend through a prepared clearance hole when the joint geometry permits.

Are screw-mount nuts suitable for furniture manufacturing?

They may be used in furniture assemblies where the supporting material provides adequate retention for the mounting screws or rivets.

What is the difference between a screw-mount nut and a tee nut?

A screw-mount nut is mechanically attached through mounting holes. A typical four-prong tee nut is retained by prongs driven into wood.

Are screw-mount nuts the same as projection weld nuts?

No. Some screw-mount nut designs include welding projections, but mechanical mounting and projection welding are different attachment methods.

Are M6 and 1/4-20 UNC interchangeable?

No. They have different nominal diameters and thread pitches.

Can Juxin Fasteners manufacture custom screw-mount nuts?

Yes. Juxin Fasteners can evaluate drawing-based requirements for thread sizes, flange dimensions, barrel geometry, mounting holes, materials and finishes.

What information is needed for an OEM quotation?

Please provide the internal thread designation, base diameter, base thickness, barrel dimensions, mounting hole diameter and positions, material, surface finish, drawing and estimated order quantity.

Request an OEM Manufacturing Quote – Screw-Mount Nuts

Juxin Fasteners manufactures screw-mount nuts for furniture, equipment panels, industrial fixtures and other OEM applications requiring mechanically attached threaded connections.

We support drawing-based manufacturing, customized dimensions, metric and Unified inch thread configurations, and batch production for international industrial customers.

Our engineering and sales teams welcome inquiries from design engineers, manufacturing engineers, production managers, purchasing specialists, procurement managers and supply chain managers.

Manufacturer: Juxin Fasteners

Product: Screw-Mount Nuts – Three-Hole Flanged Barrel Nuts

Material: Steel

Finish: Zinc Plating or Drawing-Specified Finish

Design: Circular Flanged Base, Three Mounting Holes, Internally Threaded Barrel

Thread Options: ISO Metric / UNC / UNF Subject to Manufacturing Confirmation

Manufacturing: OEM / ODM, Drawing-Based Custom Manufacturing and Batch Production

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

Send your 2D/3D drawings, technical specifications and estimated annual purchasing quantity to request an OEM manufacturing quotation from Juxin Fasteners.

Packaging Standard

At Juxin Fasteners, we apply standardized export packaging to ensure product protection, traceability, and compliance with international logistics requirements.

1. Standard Export Packaging

Unless otherwise specified, all products will be packed according to our factory standard export packaging, which includes:

Moisture-resistant inner protection

Poly bag or small box packing as required

Reinforced export cartons

Clear labeling with part number, specification, batch number, and quantity

Palletizing for sea or air shipment when necessary

Our standard packaging is designed to ensure safe transportation, efficient warehousing, and long-distance international shipping.

2. Customized Packaging Options

We also provide customized packaging solutions according to customer requirements, including but not limited to:

Private labeling

Customized barcodes

Specific carton dimensions

Retail packaging

Special pallet configuration

Customer-specific marking and identification

So that you know, customized packaging may involve additional costs and extended lead time depending on the complexity of the requirements.

3. Compliance & Quality Assurance

All packaging processes are controlled under our ISO 9001 quality management system to ensure consistency, traceability, and product integrity throughout the supply chain.