Holo-krome 09027 Shoulder Screw 10mm M8x1.25 Alloy Steel

Product Description

The HOLO-KROME 09027 is a metric shoulder screw machined from grade 12.9 alloy steel, designed for precision fastening applications where a controlled-diameter shoulder is required for pivoting, guiding, or locating components. The 10 mm shoulder diameter and 60 mm shoulder length provide a smooth, close-tolerance bearing surface, while the M8x1.25 threaded section clamps the assembly. The hex socket drive accepts a 5 mm hex key for installation in confined or recessed spaces. This fastener is used by mechanical assemblers, maintenance technicians, and toolmakers working with machine assemblies, jigs, fixtures, and automated equipment.

This shoulder screw is suited for industrial and commercial mechanical applications where a hardened, close-tolerance locating pin or pivot shaft is needed within a bolted assembly. Typical use cases include die sets, linkage systems, cam followers, and fixture plates where a precision-ground shoulder must align or support a mating bore. The uncoated finish is standard for applications where dimensional precision is critical and additional coating thickness would affect fit.

Key Features

• Grade 12.9 alloy steel construction for high tensile strength and hardness
• 10 mm shoulder diameter with close-tolerance fit for accurate component location
• 60 mm shoulder length accommodates deep assemblies or stacked components
• M8x1.25 thread with 6G fit class per ANSI B1.13M and ISO 7379
• 5 mm hex socket drive for installation with standard hex keys or Allen drivers
• Uncoated finish maintains dimensional accuracy in precision bore applications

Compatibility

Designed as an OEM-style and aftermarket replacement shoulder screw for metric mechanical assemblies requiring a 10 mm shoulder diameter and M8x1.25 threaded end per ISO 7379 and ANSI B1.13M standards.

Installation Notes

Installation should be performed by qualified mechanical technicians or toolmakers familiar with metric fastener standards. De-energize and lock out all machinery before servicing any assembly containing this fastener. Use a calibrated 5 mm hex key or socket driver and apply torque appropriate to grade 12.9 M8 fasteners per relevant engineering specifications for the assembly. Verify mating bore tolerances match the shoulder fit class before installation to avoid galling or misalignment.