Value Collection 592151PR Hex Socket Cap Screw 6-40 Unf

Product Description

The VALUE COLLECTION 592151PR is a fully threaded hex socket cap screw designed for precision fastening applications requiring corrosion resistance and consistent clamping force. Threaded 6-40 UNF with a 1/2-inch length under the head, this screw is driven by a 7/64-inch hex (Allen) key. It is manufactured from 18-8 austenitic stainless steel (Austenitic Grade A2), providing solid resistance to rust and oxidation in both indoor and light outdoor environments. This fastener meets ASME/ANSI B18.3 and ASTM F837 standards, making it suitable for applications where dimensional and material compliance is required.

This cap screw is well suited for light mechanical assemblies, instrumentation, electrical enclosures, HVAC equipment panels, and other trade applications where a compact, recessed-drive fastener is needed. The 6-40 UNF thread pitch is a fine thread designation, offering greater thread engagement per inch compared to coarse thread equivalents, which is advantageous in thinner materials or where vibration resistance matters. Installers working on control panels, bracket assemblies, or equipment housings will find this screw a standard fit for many production and service scenarios.

Key Features

• 6-40 UNF fine thread for higher thread engagement and vibration resistance
• 1/2-inch length under head for consistent fastening depth
• Fully threaded shank for maximum thread engagement in shallow applications
• 7/64-inch hex drive compatible with standard Allen keys and hex bit drivers
• 18-8 austenitic stainless steel (Grade A2) construction for corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM F837 dimensional and material standards

Compatibility

Designed as an OEM-style replacement or service fastener for applications specifying a 6-40 UNF hex socket cap screw with a 1/2-inch length under head and 7/64-inch hex drive.

Installation Notes

Install using a 7/64-inch hex key or Allen bit driver; avoid oversized or worn drivers that may strip the socket. Ensure mating threads are clean and free of debris before installation. Do not mix stainless steel fasteners with dissimilar metals in environments prone to galvanic corrosion without appropriate isolation measures. Follow applicable mechanical and equipment manufacturer torque guidelines for the 6-40 thread size.