Value Collection 40269 Hex Socket Cap Screw 5/8-18 Unf

Product Description

The VALUE COLLECTION 40269 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and structural connections. This fastener features a 5/8-18 UNF thread size with a 2-inch length under head and is fully threaded from tip to head. The 1/2-inch internal hex drive allows for high-torque installation using a standard Allen or hex key. Constructed from alloy steel with a black oxide finish, the screw offers good corrosion resistance in controlled environments and maintains strength under mechanical stress. It meets ASME/ANSI B18.3 and ASTM A574 standards, confirming compliance with recognized fastener specifications for socket cap screws.

This screw is suited for use in industrial machinery, manufacturing fixtures, equipment frames, and precision mechanical assemblies where a low-profile, high-clamp-load fastener is required. The fine UNF thread pitch provides stronger thread engagement and better resistance to loosening under vibration compared to coarse-thread equivalents. Ideal for metal-to-metal fastening in tight-clearance applications where a socket drive is preferred over a hex bolt head. Sold in a minimum order quantity of 25 pieces per order.

Key Features

• 5/8-18 UNF fine thread for high thread engagement and vibration resistance
• 2-inch length under head, fully threaded for maximum fastening versatility
• 1/2-inch hex socket drive for high-torque installation with standard hex keys
• Alloy steel construction meets ASTM A574 for high-strength socket cap screws
• Black oxide coating provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard-dimension hex socket cap screw per ASME/ANSI B18.3, compatible with any 5/8-18 UNF tapped hole application requiring a socket cap screw with a 2-inch grip length.

Installation Notes

Installation should be performed by a qualified mechanic or assembler using a calibrated 1/2-inch hex key or Allen driver. Verify the tapped hole thread specification matches 5/8-18 UNF before installation. Clean threads and mating surfaces before assembly to ensure proper seating and clamp load. Apply thread lubricant or thread-locking compound as required by the assembly specification.