Value Collection 208898 Hex Head Cap Screw 3/4-10 X 4 in 18-8 Ss

Product Description

The VALUE COLLECTION 208898 is a 3/4-10 x 4 inch hex head cap screw machined from 18-8 stainless steel. The 3/4-10 designation indicates a 3/4 inch nominal diameter with 10 threads per inch on a Unified National Coarse (UNC) thread form. At 4 inches under the head, this fastener is suited for through-bolting heavy assemblies, flanged connections, and structural joints where corrosion resistance is required. The 1-1/8 inch hex drive accepts standard hex wrenches and impact sockets. Plumbers, pipefitters, HVAC mechanics, and general contractors reach for 18-8 stainless hardware when carbon steel would corrode in wet, coastal, or chemical-exposure environments.

This screw is used across a wide range of trade applications including pipe flange bolting, equipment mounting, pump and compressor base plates, and exterior structural assemblies. The 18-8 stainless steel grade resists rust and mild chemical exposure, making it a common choice for mechanical rooms, rooftop HVAC installations, pool equipment enclosures, and coastal construction. The UNC thread form is the dominant inch-series standard in North American mechanical work, ensuring broad compatibility with tapped holes and hex nuts sourced from any standard supplier.

Key Features

• 3/4-10 UNC thread form — standard inch-series coarse thread for broad fastener compatibility
• 4 inch length under head — suitable for through-bolting thicker flanges, brackets, and structural members
• 18-8 stainless steel construction — resists rust and mild corrosion in wet or outdoor service environments
• 1-1/8 inch hex head — accepts standard sockets and box-end wrenches
• Sold individually per unit with a minimum order quantity of 10 pieces

Compatibility

Designed as a standard 3/4-10 UNC hex head cap screw suitable for use with any 3/4-10 tapped hole or hex nut conforming to inch-series UNC thread specifications.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using a properly rated socket, torque wrench, or impact driver sized for a 1-1/8 inch hex. Disengage power, relieve system pressure, and isolate any fluid lines before replacing fasteners on live equipment. Do not mix stainless steel fasteners with carbon steel nuts in applications where galvanic corrosion may be a concern. Follow applicable mechanical codes and equipment manufacturer torque specifications when fastening structural or pressure-bearing joints.