Bowmalloy 36037 Hex Head Cap Screw 5/16-18 X 3 in Grade 9

Product Description

The BOWMALLOY 36037 is a Grade 9 alloy steel hex head cap screw designed for high-strength fastening applications. It features a 5/16-18 thread size, a 3-inch length under the head, and a partial thread configuration. The clear zinc chromate finish provides corrosion resistance in demanding environments. This fastener is installed by industrial maintenance technicians, HVAC equipment assemblers, electricians, and plumbers working on structural connections, equipment mounting, and mechanical assemblies where rated tensile strength is required.

This screw is suited for heavy-duty mechanical and structural fastening in residential, commercial, and light industrial settings. Grade 9 alloy steel delivers higher proof load and tensile strength than standard Grade 5 or Grade 8 hardware, making it appropriate for vibration-prone installations and high-load connections. Partial threading ensures accurate clamping force distribution on through-bolted assemblies.

Key Features

• Grade 9 alloy steel construction for elevated tensile and proof load ratings
• 5/16-18 UNC thread size with partial threading for reliable clamping
• 3-inch length under head accommodates thicker material stacks
• Clear zinc chromate finish provides corrosion resistance
• Hex head drive for use with standard wrenches and sockets

Compatibility

Designed as a standard inch-series hex head cap screw for use in applications requiring 5/16-18 UNC thread engagement and Grade 9 alloy steel strength ratings.

Installation Notes

Installation should be performed by a qualified technician using appropriate torque tools and hardware standards for the application. Ensure mating threads and bearing surfaces are clean and free of debris before assembly. Follow applicable mechanical or structural codes for fastener torque and joint design. Do not mix metric and inch-series fasteners in the same assembly.