Value Collection 454402PS Hex Head Cap Screw 9/16-18 Grade 8

Product Description

The VALUE COLLECTION 454402PS is a fully threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Machined from Grade 8 steel with a zinc yellow dichromate finish, it provides corrosion resistance and meets the demanding requirements of UNF thread systems. The 9/16-18 thread size and 1-3/4 inch length under head make it well-suited for tight-tolerance bolted joints where fine thread engagement and clamping strength are critical. This fastener conforms to ASME B18.2.1 and SAE J429 standards, making it a specification-grade choice for professionals who need documented compliance.

This cap screw is used across a wide range of trade and industrial applications including HVAC equipment mounting, mechanical equipment frames, pump and motor assemblies, and general structural bolting where Grade 8 strength is specified. The UNF fine thread pattern offers greater tensile strength and improved resistance to loosening under vibration compared to coarse thread equivalents. It is installed with a 13/16 inch hex wrench or socket and is appropriate wherever a fine-thread, high-strength fastener is called for in inch-measurement assemblies.

Key Features

• Grade 8 steel construction meets SAE J429 minimum proof load and tensile strength requirements
• Fully threaded 9/16-18 UNF shank provides maximum thread engagement over the full 1-3/4 inch length under head
• Zinc yellow dichromate finish adds corrosion resistance and is visually distinguishable from lower-grade fasteners
• Conforms to ASME B18.2.1 dimensional standards for consistent fit in precision assemblies
• 13/16 inch hex key size compatible with standard sockets and box wrenches

Compatibility

Designed as a specification-grade replacement or service fastener for any inch-measurement bolted assembly requiring a 9/16-18 UNF fully threaded hex head cap screw with Grade 8 strength and zinc dichromate finish.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using a calibrated torque wrench sized for a 13/16 inch hex drive. De-energize and lock out all equipment before servicing fastened assemblies per applicable OSHA lockout/tagout procedures. Inspect mating threads for damage or contamination before installation. Do not mix Grade 8 fasteners with mismatched nuts or washers of lower strength grades, as this can result in joint failure.