ISO 4762 Socket Head Cap Screws | Specifications

Standard Overview

What Is ISO 4762?

The international reference for metric socket head cap screws used where a compact, high-strength internal-hex fastening solution is required.

ISO 4762 covers socket head cap screws with a cylindrical head and internal hexagon drive. The product is widely used in machinery, tooling, fixtures and industrial assemblies where installation space is limited and a recessed drive is preferred.

International Standard

ISO 4762

Metric socket head cap screws with the characteristic cylindrical head and internal hexagon socket.

Drive: Internal hexagon | Thread: Metric

Historical / Common Reference

DIN 912

DIN 912 is the commonly encountered German designation for the same general socket head cap screw product type.

Use: Drawings, catalogues and legacy specifications

Important: The standard designation alone does not define every purchasing detail. Confirm the thread size, length, property class or material, finish and certification requirements before ordering.

Technical Specifications

Materials, Property Classes & Construction

Common Steel Property Classes

8.8: Common high-strength option for general engineering and machinery applications.
10.9: Higher-strength option where the assembly design requires greater mechanical performance.
12.9: High-strength socket head cap screw option; the supplied home-page material identifies ISO 4762 / DIN 912 with Grade 12.9.

Material & Finish Selection

Option	Typical Use	Selection Point
Carbon / Alloy Steel	Machinery, tooling, industrial assemblies	Choose property class to suit the design load
Stainless Steel A2	General corrosion-resistant applications	Confirm mechanical requirement and environment
Stainless Steel A4	More demanding corrosion environments	Useful for marine/coastal and corrosive service where specified
Coated Steel	Corrosion protection where specified	Finish must match the project/environment requirements

Construction Features

Cylindrical head for compact installation.
Internal hexagon socket drive for tool access from above.
Metric thread sizes and nominal lengths selected to suit the assembly.
Suitable for recessed or restricted-access fastening points.

Dimension Reference

ISO 4762 Dimensions & Size Selection

Use the applicable ISO standard and project drawing for final dimensional verification. The table below is a practical ordering reference.

Common Metric Sizes

Thread	Typical Length Range	Drive	Typical Application
M4	8–30 mm	Internal Hex	Compact machinery / fixtures
M5	10–40 mm	Internal Hex	Machine assemblies
M6	10–50 mm	Internal Hex	General engineering
M8	12–60 mm	Internal Hex	Machinery / tooling
M10	16–80 mm	Internal Hex	Industrial equipment
M12	20–100 mm	Internal Hex	Heavy machinery
M16	25–120 mm	Internal Hex	Structural machinery assemblies
M20	30–160 mm	Internal Hex	Heavy-duty equipment
M24	40–200 mm	Internal Hex	Large industrial assemblies

Ordering format: Specify ISO 4762 + thread diameter × nominal length + property class/material + finish. Example: ISO 4762 M12 × 50, Grade 12.9, alloy steel.

Application Guidance

Where & How to Use ISO 4762 Screws

Industrial Machinery

Used in machine assemblies where a compact socket-head fastening point provides good access and a clean finished assembly.

Precision Tooling

Suitable for tooling, fixtures, jigs and precision equipment where side clearance is limited.

Automation

Useful in automation equipment and mechanical modules where recessed fastening helps maintain compact equipment envelopes.

Machine Assemblies

Commonly selected for covers, brackets, plates and components requiring metric socket head cap screws.

Corrosion Environments

Select stainless steel or an appropriate coating when corrosion resistance is required by the service environment.

Complete RFQ Format

"ISO 4762 socket head cap screw, M12 × 50, Grade 12.9, alloy steel, finish as specified, quantity ___."

Related Standards

Complementary Fastener Standards

Standard	Description	Relationship to ISO 4762
DIN 912	Socket head cap screw designation	Common historical / catalogue reference for the product type
ISO 898-1	Mechanical properties of carbon/alloy steel fasteners	Relevant when specifying steel property classes
ISO 965	Metric screw thread system and tolerances	Relevant to metric thread selection
ISO 4042	Electroplated coating systems for fasteners	Relevant when electroplated finishes are specified
ISO 3506	Mechanical properties of corrosion-resistant stainless-steel fasteners	Relevant for stainless-steel socket screws
ISO 261	General plan for ISO metric screw threads	Reference for metric thread series

FAQ

Frequently Asked Questions

What is ISO 4762?

ISO 4762 is the international standard reference for metric socket head cap screws with a cylindrical head and internal hexagon drive.

Is ISO 4762 the same as DIN 912?

DIN 912 is the commonly used German designation for this socket head cap screw product type. When replacing or approving a specified fastener, verify the exact standard, dimensions, material/property class and finish required by the drawing or purchase specification.

Which grade is available for ISO 4762?

Common steel property classes include 8.8, 10.9 and 12.9. The correct class depends on the engineering requirement. The supplied home-page content specifically lists Grade 12.9 with ISO 4762 / DIN 912.

Can ISO 4762 socket screws be stainless steel?

Yes. Stainless-steel socket screw options are commonly supplied, including A2/A4 material families. Confirm the applicable stainless-steel standard and mechanical requirements for the application.

What information should I provide for an RFQ?

Provide the standard, thread diameter, length, property class or material, finish/coating, quantity and any certification or inspection-document requirement.

Can I use ISO 4762 for restricted-access assemblies?

Yes. The internal hexagon drive and cylindrical head make socket head cap screws particularly useful where conventional external-hex access is restricted, provided the required tool access and joint design are available.

Need ISO 4762 Socket Head Cap Screws in UAE?

Send your BOQ or material requirement with size, length, grade/material, finish and quantity. We can review the specification and prepare a quotation for UAE & GCC supply.

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