304 Stainless Steel -ISO7379 Hex Socket Shoulder Bolt-Shoulder Screw

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1.Enhanced Performance – Precision-machined from corrosion-resistant 18-8 / 304 stainless steel, these hex-socket shoulder bolts combine ≈ 100 ksi / 690 MPa tensile strength with a shoulder ground to ±0.0003 in (±8 µm) for a true slip-fit pivot. The smooth, case-hardened shoulder acts as an accurate dowel and wear surface, while the deep internal hex tolerates high tightening torque without cam-out, ensuring repeatable preload and long service life from −196 °C to +425 °C.

2.Broad Application Range – Ideal as pivot pins, guide shafts, and linear slide axles in robotics, packaging equipment, medical devices, CNC tooling, automotive linkages, bicycle suspensions, and marine hardware—any assembly that needs a precise bearing surface plus the corrosion protection of stainless steel. The built-in shoulder eliminates separate bushings in plastics, aluminium, and composite housings, saving space and weight.

3.Easy to Use – The tall hex-socket head accepts standard Allen keys or power bits for quick, one-handed installation in tight recesses. A relieved thread-to-shoulder transition seats flush against mating parts without creating stress risers, while rolled UNC or metric threads start smoothly and resist galling. Chamfered tips guide easily into tapped holes, accelerating line-side assembly.

4.Assured Quality – Manufactured under ISO 9001 systems and conforming to ASME B18.3.3 (ANSI) / ISO 7379 dimensions plus ISO 3506-1 mechanical requirements. Each lot is shoulder-diameter gauged, surface-finish inspected, hardness and tensile tested, magnetic-particle examined, and passivated for maximum corrosion resistance. EN 10204 3.1 material certificates and laser-etched heat-lot codes provide full traceability, guaranteeing consistent, high-quality performance in demanding environments.