Value Collection R57001251 Hex Head Cap Screw 1/2-13 X 12 in

Product Description

The VALUE COLLECTION R57001251 is a partially threaded hex head cap screw engineered for heavy fastening applications where corrosion resistance and dimensional precision matter. Sized at 1/2-13 UNC thread with a 12-inch length under head, this fastener is manufactured from 18-8 stainless steel and left uncoated to preserve its natural corrosion-resistant properties. The partial threading provides a strong shank section for shear-load resistance and accurate alignment in through-bolted assemblies. At 1.5 pounds per unit, this is a full-bodied, large-format fastener suited to structural and mechanical work. Machinists, millwrights, pipefitters, and maintenance technicians routinely specify this size and grade for demanding environments.

This fastener is well-suited to industrial, commercial, and marine applications where mild steel hardware would corrode or contaminate the assembly. Common installations include pump mounting, pipe flange bolting, machinery frames, food-service equipment, and chemical processing fixtures. The 1/2-13 UNC thread pattern is one of the most widely used coarse-thread standards in inch-measurement systems, making mating nuts and threaded inserts easy to source. The 12-inch shank accommodates thick stacked material, spacers, or long through-bolt runs that shorter fasteners cannot reach.

Key Features

• 18-8 stainless steel construction provides strong resistance to rust, oxidation, and mild chemical exposure
• 1/2-13 UNC coarse thread is a widely standardized inch-series thread for broad hardware compatibility
• 12-inch length under head handles thick stock, stacked assemblies, and long through-bolt applications
• Partial threading preserves a full-diameter shank for shear strength and precise hole alignment
• Uncoated finish maintains base material properties and avoids coating thickness variation in close-tolerance fits
• Hex head drive allows installation and removal with standard wrenches and sockets

Compatibility

Designed for use with 1/2-13 UNC hex nuts, flat washers, lock washers, and threaded inserts conforming to inch-series UNC standards. Suitable for any application specifying a 1/2-13 x 12-inch partially threaded hex cap screw in 18-8 stainless steel.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using standard combination wrenches or impact sockets rated for the fastener size. Always ensure mating threads are clean and free of debris before assembly, and apply anti-seize compound when joining stainless fasteners to stainless or aluminum components to prevent galling. Follow applicable ASME or industry torque specifications for 1/2-13 hardware in the relevant material and joint type. De-energize, depressurize, or lock out any equipment before fastener replacement on live machinery or pressurized systems.