Value Collection 221190BR Shoulder Screw 5/8in Alloy Steel

Product Description

The VALUE COLLECTION 221190BR is a Grade 8 alloy steel shoulder screw designed for precision fastening applications where a fixed cylindrical shoulder is required between mating components. The shoulder measures 0.625 inches in diameter and 3-3/4 inches in length, providing a controlled bearing surface for pivoting, sliding, or locating parts. Drive engagement is through a 5/16-inch hex socket, and the thread is a 1/2-13 UNC configuration. The uncoated finish is standard for applications where additional coatings are applied downstream or where bare steel is acceptable. This fastener is installed by machinists, maintenance technicians, and industrial assembly professionals.

This shoulder screw is suited for use in jigs, fixtures, dies, and mechanical assemblies where a precise shaft or pivot point is needed. The 3-3/4-inch shoulder length accommodates thicker stack assemblies or applications requiring extended bearing engagement. The Grade 8 alloy steel construction provides high tensile strength, making it appropriate for moderate-to-high load environments in both production machinery and tooling applications.

Key Features

• 5/8-inch shoulder diameter with 3-3/4-inch shoulder length for extended bearing or pivot applications
• Grade 8 alloy steel construction for high tensile strength
• 1/2-13 UNC thread for standard imperial fastening
• 5/16-inch hex socket drive for recessed installation with an Allen wrench or hex key
• 7/8-inch head diameter and 3/8-inch head height for positive seating
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as a standard shoulder screw for use in industrial fixtures, tooling, jigs, dies, and mechanical assemblies requiring a 5/8-inch shoulder diameter and 1/2-13 UNC thread engagement.

Installation Notes

Install using a 5/16-inch hex key or Allen wrench. Ensure the mating bore is sized to the shoulder diameter for proper fit and function. Do not use an impact driver on socket head shoulder screws, as this can damage the drive recess or distort thread engagement. Follow applicable machinery safety lockout/tagout procedures before servicing assemblies that incorporate this fastener.