Value Collection MP39410 Hex Cap Screw 1/2-20 X 2-1/2 in Grade 8

Product Description

The VALUE COLLECTION MP39410 is a Grade 8 steel hex head cap screw with a 1/2-20 UNF thread size and a 2-1/2 inch length under head. It features a zinc yellow dichromate finish that provides corrosion resistance in demanding shop and field environments. The screw is partially threaded, making it well suited for applications requiring a bearing shoulder or clamping force against unthreaded material. Manufactured to ASME B18.2.1 standards, this fastener is appropriate for high-strength bolting applications across mechanical, structural, and equipment assembly work. It is sold in a package of 10.

This hex cap screw is used in industrial, mechanical, and maintenance applications where a high-strength inch-series fastener is required. Grade 8 fasteners are commonly specified for heavy equipment assembly, structural connections, and machinery maintenance where standard Grade 5 hardware does not meet load or torque requirements. The 1/2-20 fine thread pitch provides strong thread engagement and is commonly found in automotive, agricultural, and precision mechanical assemblies.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1/2-20 UNF fine thread for secure engagement and resistance to loosening under vibration
• Zinc yellow dichromate finish provides corrosion and oxidation resistance
• Partially threaded shank supports clamping and bearing shoulder applications
• Conforms to ASME B18.2.1 dimensional standards
• Sold in a pack of 10 for multi-fastener jobs

Compatibility

Designed as a standard inch-series hex head cap screw compatible with any application specifying a 1/2-20 UNF Grade 8 partially threaded fastener per ASME B18.2.1.

Installation Notes

Installation is performed by qualified mechanics or maintenance technicians using a standard hex wrench or socket set. Always verify that the mating nut or tapped hole is rated for Grade 8 loads before torquing. Do not mix Grade 8 hardware with lower-grade nuts or threaded components, as this can cause thread stripping or joint failure. Follow applicable equipment manufacturer torque specifications for the fastener size and application.