Value Collection 221034P Shoulder Screw 5/16 in Grade 8 Alloy Steel

Product Description

The VALUE COLLECTION 221034P is a Grade 8 alloy steel shoulder screw with a 5/16-inch shoulder diameter and a 1-inch shoulder length. The hex socket drive accepts a 5/32-inch hex key for installation. The rounded head measures 0.419 to 0.438 inches in diameter with a head height of 0.209 to 0.219 inches. The threaded portion is 1/4-20 UNC. This fastener carries an uncoated finish and meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards. It is used by machinists, millwrights, and maintenance technicians in precision mechanical assemblies where a fixed-diameter cylindrical shank is required.

Shoulder screws of this type are common in industrial and mechanical applications requiring a precise pivot point, guide pin, or bearing mount. The 5/16-inch shoulder diameter and 1-inch shoulder length suit linkage assemblies, die sets, jigs, fixtures, and similar precision hardware. The Grade 8 alloy steel construction provides the tensile strength needed in moderate- to high-load applications. This part ships with a minimum order quantity of 25 units and a package quantity of 1.

Key Features

• 5/16-inch shoulder diameter with 0.3120-inch decimal equivalent for precision fit
• 1-inch shoulder length for consistent clamping and pivot depth
• 1/4-20 UNC threaded end for standard nut or tapped-hole engagement
• Grade 8 alloy steel construction for high tensile strength
• 5/32-inch hex socket drive for torque application in tight spaces
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as a standard-dimension shoulder screw for use in jigs, fixtures, die sets, linkage assemblies, and other precision mechanical applications requiring a 5/16-inch shoulder diameter and 1/4-20 UNC thread engagement.

Installation Notes

Installation is performed by machinists, tool and die makers, or maintenance technicians using a 5/32-inch hex key. De-energize and lock out any machinery before servicing fastener locations in powered equipment. Verify that the mating bore or bearing ID matches the 0.3120-inch shoulder diameter specification before installation. Do not apply thread-locking compounds without confirming compatibility with the assembly design.