Value Collection MP30604-1X 1/2-13 X 3.5 in Hex Cap Screw

Product Description

The VALUE COLLECTION MP30604-1X is a partially threaded hex head cap screw designed for fastening applications that require corrosion resistance and reliable clamping strength. Manufactured from Grade 316 stainless steel in an uncoated finish, this fastener follows UNC thread standards with a 1/2-13 thread size and a 3.5-inch length under head. The partially threaded shank provides a smooth bearing surface for applications where the unthreaded section must pass through a clearance hole before engaging the mating threads. Plumbers, pipefitters, HVAC installers, and general mechanical contractors use this screw type in structural, equipment-mounting, and pipe-support assemblies.

This fastener is suited for wet, corrosive, and marine-adjacent environments where Grade 316 stainless steel is specified over standard 18-8 grades. Common installations include equipment supports, flanged connections, pump mounts, and bracketed assemblies in mechanical rooms, process piping systems, and outdoor or coastal settings. The 1/2-13 UNC thread pattern is among the most widely used coarse-thread sizes in inch-measurement fastener work, making this screw compatible with a broad range of standard hex nuts, washers, and tapped components.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in wet and chloride-exposed environments
• Partially threaded shank allows the unthreaded portion to pass freely through clearance holes before engaging mating threads
• 1/2-13 UNC coarse-thread pattern for broad compatibility with standard inch-measurement nuts and tapped holes
• Uncoated finish maintains dimensional consistency and avoids coating incompatibilities in sensitive assemblies
• 3.5-inch length under head accommodates thicker material stacks and flanged joint applications

Compatibility

Designed for use with standard 1/2-13 UNC hex nuts, flat washers, and lock washers in inch-measurement fastener assemblies. Suitable as a replacement or supplemental fastener wherever Grade 316 stainless steel, partially threaded hex cap screws with a 1/2-13 thread size and 3.5-inch under-head length are specified.

Installation Notes

Installation is performed by licensed tradespeople or qualified mechanics using standard hex wrenches or socket sets sized for a 1/2-13 hex head. Always ensure mating threads and tapped holes are clean and free of debris before installation. Follow applicable mechanical codes and torque specifications provided by the equipment manufacturer or structural engineer of record. Do not mix stainless steel fasteners with dissimilar metals without evaluating galvanic corrosion risk for the specific application.