120° Countersunk Aluminum Multi-Grip Blind Rivets

120° Countersunk Aluminum Multi-Grip Blind Rivets

Product Overview

JUXIN FASTENERS supplies aluminum multi-grip blind rivets featuring a 120° countersunk head and a choice of steel or stainless steel pull mandrels.

These wide-grip-range blind rivets are designed for one-sided installation in assemblies where material thickness may vary and reduced fastener head projection is required.

The 120° countersunk head is intended to seat within a matching countersink, while the multi-grip construction accommodates a wider 

range of combined material thicknesses than comparable conventional narrow-grip blind rivets.

This combination is relevant to OEM sheet-metal fabrication, industrial equipment enclosures and assemblies requiring both grip-range flexibility and controlled head clearance.

Material Combinations and Part Numbers

The original part number references are retained as supplied.

The exact aluminum alloy, steel grade, stainless steel grade and surface treatments must be confirmed against the approved technical documentation.

Product Features

• Aluminum rivet body with steel or stainless steel mandrel options

• 120° countersunk head for compatible flush-mount applications

• Multi-grip construction for varying material stack-ups

• One-sided blind riveting installation

• Reduced head projection when correctly installed

• Suitable for compatible sheet-metal and enclosure assemblies

• Potential reduction in rivet length variants after engineering validation

• Customer-specific dimensional requirements subject to technical review

Technical Specifications

Technical Documentation: Refer to the existing product PDF/CAD specification, pages 95–96.

The original engineering drawings and dimensional tables govern the actual available sizes, tolerances and mechanical requirements.

120° Countersunk Head — Flush-Mount Engineering

The 120° countersunk head is the defining head geometry of this product.

When installed in a correctly prepared countersink, the rivet head can seat approximately flush with the accessible material surface.

This design may be useful where a protruding head could interfere with adjacent components or where reduced head projection is specified.

Critical engineering parameters include:

• 120° countersink angle

• Countersink diameter and depth

• Rivet head diameter and height

• Mounting-hole diameter and tolerance

• Panel material and thickness

• Remaining material beneath the countersink

• Head seating after installation

A 120° countersunk rivet requires compatible countersink geometry.

It should not be substituted for a countersunk rivet with a different head angle without checking the mating hole and joint requirements.

Incorrect countersink geometry may cause head protrusion, inadequate head support or localized panel deformation.

Multi-Grip Design and Wide Thickness Range

Multi-grip blind rivets are designed to accommodate a wider range of combined material thicknesses than comparable standard-grip designs.

The specified grip range defines the minimum and maximum material stack-up for which a selected rivet is intended.

For OEM assemblies using several panel thickness combinations, a suitable multi-grip rivet may cover more than one configuration.

However, the selected rivet must meet the installation and mechanical requirements at every intended material thickness.

Engineering Selection Matrix

The actual grip range must be obtained from the selected JUXIN product specification.

A wide grip range does not mean that one rivet is suitable for every material thickness.

Engineering Example — Variable Panel Thickness

Consider an OEM equipment enclosure with several panel configurations.

These values are illustrative engineering examples, not confirmed JUXIN product specifications.

A single multi-grip rivet could potentially be used across all three assemblies only if:

• Its verified grip range covers the complete thickness interval.

• The mounting-hole diameter is compatible.

• The 120° countersink is correctly formed in each assembly.

• The remaining panel material provides adequate support.

• The installed joint meets the required mechanical performance.

This selection process can help manufacturing teams evaluate fastener standardization without assuming that different panel configurations are automatically interchangeable.

Steel vs. Stainless Steel Mandrels

Both product configurations use an aluminum rivet body. The difference is the pull mandrel material.

Aluminum Body + Steel Mandrel

This configuration uses a steel pull mandrel to deform the aluminum rivet body during installation.

The steel grade and mandrel finish should be specified for the intended application.

Aluminum Body + Stainless Steel Mandrel

This configuration uses a stainless steel pull mandrel with the aluminum rivet body.

The stainless steel grade and its compatibility with the mating materials and service environment should be evaluated.

Stainless steel mandrels are not automatically nonmagnetic, and they do not make the complete rivet a stainless steel fastener.

Neither mandrel configuration should be assigned a universal strength or corrosion-resistance advantage without verified product data.

Countersinking and Thin Sheet-Metal Design

Countersinking removes or displaces material around the mounting hole.

For thin panels, this can reduce the remaining material available to support the rivet head.

The engineer should evaluate:

• Panel thickness before countersinking

• Countersink depth

• Remaining material beneath the head

• Local bearing area

• Panel stiffness

• Expected joint loading

• Installed head condition

A flush-mounted head is not necessarily the most suitable solution for every thin-sheet application.

Where a larger head-side bearing surface is required, a different rivet head configuration may be more appropriate.

Mounting-Hole Preparation and Tolerances

Correct hole preparation is essential for consistent blind riveting.

Important manufacturing controls include:

• Mounting-hole diameter

• Hole alignment

• Burr removal

• Countersink angle

• Countersink depth

• Surface condition

• Material stack-up

• Blind-side clearance

An oversized hole may reduce rivet support.

An undersized or misaligned hole may prevent proper insertion or damage the rivet during installation.

For production assemblies, hole and countersink dimensions should be controlled according to the approved engineering drawing.

Metric and Inch Diameter Reference

The following values are general nominal blind rivet diameter references.

These values are general dimensional references only and do not establish the available diameter range of this JUXIN product.

Actual metric and inch-designated rivets must be checked for dimensions, tolerances, grip ranges, mounting-hole requirements and functional compatibility before substitution.

Installation Method

These 120° countersunk multi-grip blind rivets require a compatible blind riveting tool and nosepiece.

A typical installation sequence is:

1. Prepare the mounting hole and 120° countersink according to the approved drawing.

2. Confirm the combined material thickness is within the selected rivet's grip range.

3. Align the joined components.

4. Insert the rivet into the prepared hole.

5. Seat the countersunk head correctly.

6. Engage the mandrel with the compatible riveting tool.

7. Pull the mandrel to deform the rivet body on the blind side.

8. Complete the setting operation at the designed mandrel break point.

9. Inspect head seating and blind-side formation.

The tool must be compatible with the selected rivet diameter, mandrel material and setting requirements.

Production Engineering and Assembly Efficiency

For manufacturing engineers and production managers, the multi-grip design may help simplify fastener selection across approved assemblies with different panel stack-ups.

Potential benefits include:

• Fewer rivet length variants

• Simplified fastener selection at assembly stations

• Reduced risk of incorrect rivet length selection

• More consistent assembly instructions

• Easier inventory planning

• Greater flexibility across approved product configurations

These benefits depend on verifying the actual grip range, countersink geometry and installed joint performance.

Tooling compatibility must also be checked when switching between steel and stainless steel mandrel configurations.

Mechanical Performance and Joint Reliability

Shear strength and tensile strength represent different loading conditions.

Actual performance depends on the selected rivet design, body diameter, material grades and mandrel configuration.

For 120° countersunk multi-grip rivets, the following factors are particularly important:

• Minimum and maximum grip thickness

• Countersunk head seating

• Mounting-hole diameter

• Remaining panel material

• Blind-side formation

• Rivet spacing and edge distance

• Installation quality

• Required shear and tensile performance

A wide grip range does not guarantee identical mechanical performance at every material thickness.

The complete installed joint should be evaluated against the applicable engineering requirements.

Corrosion and Material Compatibility

Aluminum, steel and stainless steel have different electrochemical characteristics.

The actual corrosion behavior of an installed rivet depends on:

• Aluminum alloy grade

• Steel or stainless steel mandrel grade

• Surface coatings

• Mating panel materials

• Moisture and electrolyte exposure

• Service environment

Dissimilar-metal contact can create galvanic corrosion concerns under suitable environmental conditions.

No specific corrosion rating or salt spray performance is claimed without supporting product data.

Typical Industrial Applications

120° countersunk aluminum multi-grip blind rivets may be considered for compatible applications such as:

• Flush-mounted sheet-metal panels

• Industrial equipment enclosures

• Electrical and electronic equipment housings

• Fabricated metal cabinets

• Machinery covers and access panels

• Equipment brackets

• OEM assemblies with variable panel thickness

• Industrial products requiring reduced fastener head projection

Application suitability depends on the actual rivet dimensions, grip range, material compatibility and joint performance requirements.

International Standards and Technical References

International blind rivet standards distinguish products according to construction, material combination, head geometry and dimensional requirements.

A 120° countersunk multi-grip rivet should not automatically be described as conforming to a standard intended for conventional dome head, different-angle countersunk or narrow-grip blind rivets.

Where ISO, DIN, EN or other international standards are required, the applicable standard, edition and scope must be verified against the actual product configuration.

The approved JUXIN engineering drawing and agreed customer specifications remain the controlling technical references until conformity is confirmed.

Inspection and Quality Requirements

Relevant inspection characteristics may include:

• Rivet body diameter and length

• 120° countersunk head angle

• Head diameter and height

• Mandrel dimensions

• Material identification

• Minimum and maximum grip range

• Mounting-hole compatibility

• Countersink seating

• Blind-side formation

• Mandrel break condition

• Shear and tensile performance where specified

• Surface condition and packaging

Inspection methods and acceptance criteria should follow the approved engineering drawing and customer requirements.

OEM Customization and Bulk Supply

JUXIN FASTENERS supports drawing-based OEM sourcing for 120° countersunk aluminum multi-grip blind rivets.

Customer-specific requirements may include rivet diameter, body length, countersunk head geometry, grip range, mandrel material, surface finish, inspection criteria and packaging.

Technical feasibility and commercial terms are reviewed according to the required specifications and purchasing quantities.

Frequently Asked Questions

What is a 120° countersunk multi-grip blind rivet?

It is a blind rivet combining a wide grip range with a 120° countersunk head designed for compatible flush-mount applications.

What is the difference between this product and a standard countersunk blind rivet?

The multi-grip construction is intended to accommodate a wider range of combined material thicknesses than a comparable conventional narrow-grip design.

What is the difference between steel and stainless steel mandrel versions?

Both use aluminum rivet bodies. The mandrel materials differ, which can affect installation requirements, mechanical characteristics and corrosion considerations.

Do 120° countersunk rivets always sit flush?

No. Correct flush seating depends on the head dimensions, countersink geometry, panel material and installation conditions.

Can one multi-grip rivet replace several conventional rivet lengths?

Potentially, yes, provided all intended thicknesses fall within its verified grip range and the required joint performance is achieved.

Are stainless steel mandrel blind rivets nonmagnetic?

Not necessarily. Magnetic behavior depends on the stainless steel grade and its processing condition.

Are these rivets suitable for thin sheet metal?

They may be suitable where the countersink geometry, remaining panel thickness and joint requirements are compatible.

Can JUXIN supply custom 120° countersunk multi-grip blind rivets?

Customer-specific drawings and technical requirements can be submitted for engineering review and quotation.

Request an OEM 120° Countersunk Multi-Grip Blind Rivet Quotation

JUXIN FASTENERS supplies industrial blind rivets for OEM manufacturing and bulk purchasing projects.

For an accurate technical review and quotation, please provide:

• Rivet body diameter and length

• 120° countersunk head diameter and height

• Minimum and maximum material stack-up

• Mounting-hole diameter and tolerance

• Aluminum body alloy requirements

• Steel or stainless steel mandrel grade

• Surface finish requirements

• 2D engineering drawings or 3D CAD files

• Required mechanical performance

• Inspection and packaging requirements

• Expected purchasing quantity and annual demand forecast

• Target delivery schedule

Email: info@juxinfasteners.com

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

JUXIN FASTENERS — Industrial Multi-Grip Blind Rivets and Custom Fastening Solutions for Global OEM Applications.

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.