Value Collection A996778 Shoulder Screw M5x0.80 Alloy Steel

Product Description

The VALUE COLLECTION A996778 is a metric shoulder screw made from 12.9 grade alloy steel, designed for precision fastening applications where a controlled-diameter shoulder is required for bearing mounting, pivot points, or guided assemblies. The shoulder measures 6 mm in diameter and 25 mm in length, providing a precise bearing surface separate from the M5x0.80 threaded section. Drive is via a hex socket for torque control in tight clearances. The uncoated finish is standard for this grade. Machinists, maintenance technicians, and mechanical assemblers working with metric fastener specifications will find this part meets ASME/ANSI B18.3.3.M, BS 4168, and ISO 7379 standards.

This shoulder screw is suited for use in mechanical assemblies requiring a fixed-diameter shoulder to locate components, act as a pivot shaft, or support rolling-element bearings. Typical applications include jigs and fixtures, conveyor guides, robotic linkages, and precision equipment requiring repeatable positional alignment. The M5x0.80 metric thread is a common pitch for medium-duty assemblies. The 12.9 material grade provides high tensile strength, making it appropriate for load-bearing pivot and bearing retention applications. Sold in a package quantity of 10.

Key Features

• 6 mm shoulder diameter with 25 mm shoulder length for precise component location
• M5x0.80 metric threaded section for secure clamping into tapped holes
• 12.9 alloy steel grade for high tensile and proof-load strength
• Hex socket drive for installation with Allen keys or hex bit drivers in confined spaces
• Uncoated finish suitable for standard mechanical environments
• Meets ASME/ANSI B18.3.3.M, BS 4168, and ISO 7379 dimensional standards

Compatibility

Designed as a standard metric shoulder screw for general mechanical assemblies using M5x0.80 threaded holes and requiring a 6 mm precision shoulder diameter per ISO 7379 and ASME/ANSI B18.3.3.M specifications.

Installation Notes

Installation is performed by mechanical assemblers or maintenance technicians using a hex key or hex socket bit sized for the drive recess. Ensure the mating tapped hole is clean and correctly sized for M5x0.80 threads before installation. Do not exceed the design load for the 12.9 grade material, and avoid using impact drivers that may damage the hex socket recess or over-stress the threaded section. Degrease mating surfaces if adhesive thread-locking compounds are to be used.