Value Collection MP39405 Hex Cap Screw 1/2-20 Grade 8 25pk

Product Description

The VALUE COLLECTION MP39405 is a fully threaded hex head cap screw designed for high-strength fastening applications. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to lower-grade hardware. The 1/2-20 UNF thread form provides fine-thread engagement for applications requiring precise clamping force and resistance to vibration loosening. At 1-1/4 inches under the head, the length suits a range of medium-depth joint configurations. This screw conforms to ASME B18.2.1 dimensional standards, making it a reliable choice for engineers, millwrights, and maintenance professionals specifying to published fastener standards.

This cap screw is suited for industrial, mechanical, and structural assembly work where Grade 8 strength is specified. Fine-thread UNF fasteners of this size are commonly used in machinery assembly, equipment maintenance, and fabrication where high clamp load is required. The zinc yellow dichromate finish provides a base level of corrosion protection appropriate for indoor and light-duty outdoor environments. Sold in packs of 25, this SKU is practical for job-site restocking or production assembly use.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1/2-20 UNF fully threaded, full engagement along entire shank length
• Zinc yellow dichromate finish for corrosion and oxidation resistance
• Conforms to ASME B18.2.1 dimensional standards
• 1-1/4 inch length under head for medium-depth fastening applications
• Sold in 25-piece packs for efficient inventory management

Compatibility

Designed as a standard 1/2-20 UNF Grade 8 hex head cap screw per ASME B18.2.1, compatible with any application specifying that thread size, grade, and dimensional standard.

Installation Notes

Installation should be performed by qualified millwrights, mechanics, or maintenance technicians familiar with fastener torque specifications for the applicable joint design. Always verify the mating thread size and material compatibility before installation. Use appropriate hand tools or impact equipment calibrated to the required torque for 1/2-20 Grade 8 fasteners as specified by the equipment manufacturer or applicable engineering standard. Inspect threads for damage or contamination before assembly.