Value Collection D39216 Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION D39216 is a fully threaded hex head cap screw engineered 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 alternatives. The screw measures 1-8 thread size with a 2-1/2 inch length under head and conforms to ASME B18.2.1 dimensional standards. Machinists, millwrights, and maintenance technicians reach for Grade 8 hardware when joint integrity under heavy load or vibration is required. The UNC thread form ensures compatibility with standard inch-series tapped holes and nuts.

This cap screw is suited for heavy-duty mechanical assemblies, structural connections, and equipment maintenance in industrial and commercial settings. Its fully threaded shank allows maximum thread engagement across a range of material thicknesses, making it a practical choice for through-bolted joints or applications where grip length flexibility is needed. The zinc yellow dichromate coating provides a level of corrosion protection appropriate for interior and light exterior exposure. Minimum order quantity is 10 pieces.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish for corrosion resistance and easy visual identification as Grade 8
• Fully threaded shank per ASME B18.2.1 dimensional standard
• UNC thread form for compatibility with standard inch-series hardware
• 1-8 thread size with 2-1/2 inch length under head

Compatibility

Designed as an OEM-style replacement or general-purpose fastener compatible with standard UNC inch-series tapped holes and hex nuts in Grade 8 or compatible strength classifications.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a standard hex wrench or impact driver with the appropriate socket. Always ensure mating threads and seating surfaces are clean and free of debris before installation. Grade 8 fasteners should be torqued to values specified by the equipment manufacturer or applicable engineering standards for the joint design. Do not substitute lower-grade hardware in applications specified for Grade 8.