Value Collection 30578 Hex Head Cap Screw 1/4-20 2-1/2 in 316 Ss

Product Description

The VALUE COLLECTION 30578 is a 1/4-20 UNC hex head cap screw with a 2-1/2 inch length under head, manufactured from Grade 316 stainless steel. Grade 316 stainless provides enhanced corrosion resistance compared to Grade 304, making it a standard choice in wet, chemical-exposure, or marine-adjacent environments. The 7/16 inch hex drive head accepts a standard hex wrench or socket. This fastener is used by plumbers, pipefitters, HVAC technicians, electricians, and general contractors wherever a corrosion-resistant threaded fastener is required for structural or mechanical assembly.

This cap screw is suited for residential and commercial applications where exposure to moisture, mild chemicals, or outdoor conditions demands a stainless fastener. Typical uses include equipment mounting, pipe flange bolting, panel assembly, and fixture attachment in HVAC, plumbing, and electrical installations. The 1/4-20 UNC thread is one of the most common inch-series thread sizes, compatible with standard 1/4-20 nuts and tapped holes across a wide range of trade hardware.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in wet and chemically exposed environments
• 1/4-20 UNC thread standard for broad compatibility with inch-series hardware
• 2-1/2 inch length under head for deeper grip and through-bolt applications
• 7/16 inch hex head drive accepts standard wrenches and sockets
• Inch measurement system for direct use with standard trade tooling

Compatibility

Designed for use with standard 1/4-20 UNC inch-series nuts, washers, and tapped components across HVAC, plumbing, electrical, and general mechanical assemblies requiring Grade 316 stainless fasteners.

Installation Notes

Install using a 7/16 inch wrench or socket. Ensure mating threads are clean and free of debris before installation. Do not mix stainless steel fasteners with dissimilar metals in environments prone to galvanic corrosion. Consult applicable mechanical or electrical codes for torque requirements specific to your assembly.