Value Collection 537150PS Shoulder Screw M8x1.25 Alloy Steel

Product Description

The VALUE COLLECTION 537150PS is an alloy steel shoulder screw with a hex socket drive, designed for precision fastening applications that require a smooth, hardened shoulder to act as a bearing surface, pivot point, or guide for moving components. Built to material grade 12.9 for high tensile strength, this screw features a 10 mm shoulder diameter and a 25 mm shoulder length with an M8x1.25 metric thread. The uncoated alloy steel construction makes it well suited for mechanical assemblies where tight dimensional tolerances and load-bearing surfaces are critical. Licensed tradespeople and mechanical assembly professionals specify this fastener for jigs, fixtures, and precision machinery.

This shoulder screw is used in industrial and mechanical applications including jig-and-fixture construction, die sets, conveyor systems, and equipment where a smooth shank must serve as a dowel or pivot. It is appropriate for both light industrial and heavy-duty commercial machinery environments. The hex socket drive allows installation in confined spaces using standard Allen key tooling. Minimum order quantity is 5 pieces; individual package quantity is 1.

Key Features

• 10 mm shoulder diameter with 25 mm shoulder length for consistent bearing-surface fitment
• M8x1.25 metric thread for standard compatibility in metric assemblies
• Material grade 12.9 alloy steel for high tensile and shear strength
• Hex socket drive enables installation in tight or recessed locations
• Uncoated finish suitable for assemblies where surface treatments are applied later or not required
• Meets ASME/ANSI B18.3.3.M, BS 4168, and ISO 7379 dimensional standards

Compatibility

Designed as an OEM-style metric shoulder screw replacement or new-build fastener for mechanical assemblies requiring a 10 mm shoulder diameter, 25 mm shoulder length, and M8x1.25 thread engagement per ASME/ANSI B18.3.3.M, BS 4168, and ISO 7379 specifications.

Installation Notes

Installation is typically performed by mechanical assemblers or millwrights using a hex key or Allen driver sized to the socket. Ensure mating bores are reamed to the appropriate H7 tolerance for a precision shoulder fit before installation. De-energize and lock out any machinery before installing or removing shoulder screws in live equipment. Do not use impact drivers on socket-head cap or shoulder screws, as this may damage the drive recess or over-stress the fastener.