Value Collection 31-SHB-12-62 Shoulder Screw 4-40 Stainless

Product Description

The VALUE COLLECTION 31-SHB-12-62 is a stainless steel shoulder screw designed for precision fastening applications where a smooth, controlled pivot or bearing surface is required. The shoulder measures 0.125 inches in diameter and 0.625 inches in length, providing a precise cylindrical shaft for bushings, pivot points, or linkage assemblies. The threaded portion is sized 4-40 UNC, and the fastener is driven with a 5/64-inch hex socket key. Material is 18-8 and 303 stainless steel with an uncoated finish, offering corrosion resistance suitable for both indoor and outdoor environments. The head diameter is 0.25 inches and the head height is 0.125 inches.

This shoulder screw is used across a wide range of mechanical, electrical, and industrial assembly applications. It is commonly installed in control panels, enclosures, linkage mechanisms, jigs, and fixtures where a close-tolerance rotating or sliding interface is needed. The 4-40 UNC thread pitch makes it appropriate for small-scale precision assemblies. Machinists, maintenance technicians, and electronics assemblers regularly specify this style of fastener for low-load pivot and spacer functions.

Key Features

• 0.125-inch shoulder diameter with 0.625-inch shoulder length for close-tolerance pivot and bushing applications
• 4-40 UNC thread for use in fine-pitch small-fastener assemblies
• 18-8 and 303 stainless steel construction provides corrosion resistance without coating
• 5/64-inch hex socket drive for precise torque application in confined spaces
• 0.25-inch head diameter and 0.125-inch head height for low-profile seating
• Uncoated finish — no surface treatment to affect shoulder tolerances

Compatibility

Designed as an OEM-style replacement or standard-specification shoulder screw suitable for precision mechanical assemblies requiring a 4-40 UNC thread and a 0.125-inch shoulder diameter.

Installation Notes

Installation requires a 5/64-inch hex key or hex socket driver. De-energize and lock out any assembly before servicing fasteners in electrical or control enclosures. Do not exceed the torque capacity of the 4-40 thread; overtightening can strip the thread or distort the shoulder. Inspect the mating bore or bushing for proper fit before final assembly to ensure the shoulder diameter seats without binding.