Value Collection 204085B Hex Cap Screw 1/2-13 X 4 in 316 Ss

Product Description

The VALUE COLLECTION 204085B is a hex head cap screw engineered for applications that demand corrosion resistance and mechanical strength. Sized at 1/2-13 UNC thread with a 4-inch length under head, this fastener is partially threaded, which allows for clamping force to be applied along the unthreaded shank. Constructed from Grade 316 stainless steel, it offers superior resistance to chlorides, chemicals, and marine environments compared to standard 304-grade fasteners. The uncoated finish maintains the natural surface properties of the alloy without additional plating or treatment. Installation requires a standard hex wrench or socket. Suitable for a wide range of industrial, mechanical, and structural assembly tasks.

This fastener is commonly used in plumbing, HVAC equipment assemblies, pool and spa mechanical installations, marine hardware, food processing environments, and chemical handling applications where 316 stainless steel is specified for elevated corrosion protection. The partial thread design makes it well suited for through-bolt installations and flanged connections where a grip-length shank is needed. Technicians and tradespeople working with stainless hardware in wet or corrosive environments will find this screw a standard go-to for code-compliant, durable connections.

Key Features

• Grade 316 stainless steel construction for enhanced corrosion and chloride resistance
• 1/2-13 UNC thread standard for broad tool and nut compatibility
• 4-inch length under head for deep through-bolt and flanged applications
• Partially threaded shank provides clamping grip without thread engagement along the full length
• Uncoated finish preserves natural 316 alloy surface properties
• Inch system of measurement, compatible with standard SAE tooling

Compatibility

Designed as a standard UNC hex head cap screw for use with 1/2-13 nuts and tapped holes in inch-dimensioned assemblies across HVAC, plumbing, pool, and industrial mechanical applications.

Installation Notes

Installation should be performed by a qualified technician familiar with fastener torque requirements for the specific joint material and application. Always de-energize and depressurize any system before replacing or installing fasteners in mechanical assemblies. Use a calibrated torque wrench appropriate for 1/2-inch fasteners to achieve proper clamp load without overstressing the threads. Avoid mixing stainless fasteners with dissimilar metals in submerged or high-moisture environments to minimize galvanic corrosion risk.