Value Collection 537308BR Shoulder Screw M16x2 Alloy Steel

Product Description

The VALUE COLLECTION 537308BR is a metric shoulder screw designed for precision fastening applications where a hardened, close-tolerance shoulder is required. The screw features a 20 mm shoulder diameter and a 100 mm shoulder length, providing a reliable pivot or spacer point in mechanical assemblies. Constructed from alloy steel at material grade 12.9, it delivers high tensile and shear strength suitable for demanding industrial use. The hex socket drive allows for high-torque installation in confined spaces. The head diameter ranges from 29.67 to 30 mm with a head height of 13.73 to 14 mm. The finish is uncoated. Maintenance technicians, machine builders, and industrial assemblers are the primary installers of this fastener type.

This shoulder screw is used in machine design, jig and fixture building, and mechanical linkage assemblies where a precision-ground cylindrical shoulder acts as a bearing surface, pivot point, or guide pin. It is appropriate for both light industrial and heavy-duty mechanical applications. The M16x2 thread size and 12.9 material grade make it well suited for high-load assemblies where standard fasteners would not provide adequate strength or dimensional accuracy.

Key Features

• 20 mm shoulder diameter provides a precision bearing and pivot surface
• 100 mm shoulder length accommodates deep assemblies and linkage stacks
• Alloy steel at grade 12.9 for high tensile and proof load capacity
• Hex socket drive enables high-torque installation in tight clearances
• Uncoated finish suitable for use with added lubricants or coatings as needed
• Meets ASME/ANSI B18.3.3.M, BS 4168, ISO 7370, and ISO 7379 standards

Compatibility

Designed as a standard metric shoulder screw for use in machine frames, fixtures, and mechanical assemblies requiring an M16x2 thread and a 20 mm shoulder diameter per ISO 7379 and ASME/ANSI B18.3.3.M dimensional standards.

Installation Notes

Installation should be performed by a qualified machinist or mechanical assembler familiar with high-strength metric fasteners. Ensure the mating bore is machined to the appropriate tolerance for the 20 mm shoulder before installation. Use a calibrated hex key sized for the socket drive and apply a suitable thread lubricant or anti-seize compound to the M16x2 threads. Do not exceed the torque capacity of the 12.9 grade material, and never substitute a lower-grade fastener in an application sized for this part.