ISO 7379 M3 M4 M5 5/16 Black Alloy Steel Allen Socket Cap Head Step Screw Shoulder Bolts

Product Overview

Engineered for precision alignment and load distribution, our ISO 7379 Shoulder Bolts are crafted from high-strength alloy steel with a black oxide finish. Featuring a socket cap head, unthreaded shoulder, and Allen drive, these bolts are ideal for applications requiring exact spacing, pivot points, or rotational support in machinery, automotive, and automation systems. Fully compliant with ISO 7379 standards, they ensure reliability in high-stress environments.

Key Features

✅ ISO 7379 Compliance

• Dimensional Precision: Strict adherence to international standards for shoulder diameter, length, and thread tolerances.
• Interchangeability: Guaranteed compatibility with ISO-certified components.

✅ Alloy Steel Construction

• Material Grade: 10.9/12.9 Alloy Steel – Tensile strength up to 1,200 MPa (Grade 12.9).
• Black Oxide Finish: Corrosion-resistant coating reduces wear and provides a sleek, low-reflective appearance.

✅ Socket Cap Head & Allen Drive

• Hex Socket (Allen Key): Secure tightening with standard hex keys (2mm–6mm).
• Low-Profile Head: Fits flush with surfaces, minimizing protrusion in compact assemblies.

✅ Shoulder Design

• Unthreaded Shoulder: Maintains precise alignment of bearings, bushings, or rotating parts.
• Smooth Bearing Surface: Reduces friction and wear on mating components.