Value Collection KP45137 Grade 8 Hex Cap Screw 3/4-16 Unf 25 Pack

Product Description

The VALUE COLLECTION KP45137 is a Grade 8 hex head cap screw designed for high-strength fastening applications in demanding mechanical and structural assemblies. Manufactured from steel with a zinc finish, it features a 3/4-16 UNF thread size and a 3.5-inch length under head. The partial threading is intentional, providing a smooth shank section that resists shear loads in bolted connections. This fastener meets ASTM A354 Grade BD requirements, making it suitable for use in applications that require documented tensile and proof-load performance. Licensed tradespeople and industrial maintenance technicians working on machinery, heavy equipment, or structural steel commonly specify this grade of fastener.

This screw is used in applications where high clamping force and resistance to stress relaxation are required. The 3/4-16 UNF fine-thread pitch provides greater tensile strength and better resistance to loosening under vibration compared to coarse-thread equivalents. The zinc finish provides a basic level of corrosion resistance suitable for indoor and light-duty outdoor use. Each package contains 25 pieces, supporting maintenance kits, assembly line restocking, and job-site supply for mechanical contractors and industrial technicians.

Key Features

• Grade 8 steel construction meets ASTM A354 BD tensile and proof-load standards
• 3/4-16 UNF fine-thread pitch for improved vibration resistance and higher clamping force
• Partially threaded shank provides a bearing surface that resists shear loads
• Zinc finish offers basic corrosion protection for general-purpose use
• Standard hex head design accepts common 1-1/8-inch hex drive tooling
• Sold in a 25-piece pack for convenient job-site and shop stocking

Compatibility

Designed as a standard-dimension Grade 8 hex head cap screw for use in inch-system mechanical assemblies requiring 3/4-16 UNF thread engagement and a 3.5-inch length under head.

Installation Notes

Installation should be performed by qualified mechanical or industrial maintenance technicians familiar with high-strength fastener procedures. Always verify that the mating tapped hole or nut meets the same or higher grade specification before torquing. Use a calibrated torque wrench and follow the applicable structural or equipment manufacturer torque specification for Grade 8 fasteners of this size. Do not mix metric and inch fasteners in the same assembly, and inspect threads for damage before installation.