Value Collection 198789 Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION 198789 is a fully threaded hex socket cap screw designed for secure fastening in mechanical, industrial, and trade assembly applications. It features a 5/16-18 UNC thread size and a 1-1/4 inch length under head, driven by a 1/4 inch hex key. Constructed from 18-8 stainless steel, this fastener offers reliable corrosion resistance in wet, outdoor, or chemically exposed environments. The socket cap head design allows installation in recessed or tight-clearance areas where a standard hex bolt head would not fit. Licensed trades and industrial maintenance technicians commonly specify this fastener for equipment assembly, panel mounting, and structural connections.

This cap screw is suited for residential and commercial mechanical applications where a compact, corrosion-resistant fastener is required. Typical use cases include HVAC equipment assembly, electrical enclosure mounting, plumbing fixture bracketing, and general equipment fabrication. The 18-8 stainless steel grade performs well in moderate-corrosion environments and is compatible with standard stainless hardware pairings. The UNC thread form is the most common coarse-thread standard in inch-based fastener applications across North American trade work.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard inch-series tapped holes
• Fully threaded shank provides maximum thread engagement along the full 1-1/4 inch length under head
• 18-8 stainless steel construction resists corrosion in wet and outdoor service conditions
• 1/4 inch hex drive socket head allows installation in tight or recessed spaces
• Socket cap head profile keeps the fastener low-profile against the mating surface

Compatibility

Designed for use in any application requiring a 5/16-18 UNC inch-series threaded fastener with a hex socket cap head. Compatible with standard inch-series tapped holes and matching stainless steel or compatible metal hardware.

Installation Notes

Install with a 1/4 inch hex key or Allen driver; use a calibrated torque wrench where joint specifications require it. Ensure the mating tapped hole is clean and free of debris before threading to avoid cross-threading or galling, which is common with stainless steel fasteners. Apply an appropriate anti-seize compound when mating stainless to stainless to reduce the risk of thread galling. Power down or de-energize any equipment before performing fastener installation or removal on live assemblies.