Value Collection -40229-1 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The VALUE COLLECTION -40229-1 is a hex socket cap screw designed for high-strength fastening in precision mechanical assemblies. It features a 5/16-24 UNF thread size with a 1-inch length under the head and is fully threaded along its entire shank. The screw is machined from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection. Drive engagement is through a 1/4-inch internal hex socket. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for applications where tensile strength and dimensional consistency are critical.

This cap screw is used in a wide range of trade and industrial applications including HVAC equipment frames, pump assemblies, electrical enclosures, and general mechanical fabrication. The fine 24-pitch UNF thread provides greater tensile strength and better resistance to loosening under vibration compared to coarse-thread fasteners of the same diameter. Machinists, millwrights, HVAC technicians, and field service pros use this style of fastener when working in tight clearance areas where a hex key is the preferred drive tool.

Key Features

• 5/16-24 UNF fine thread for high tensile load capacity and vibration resistance
• Fully threaded shank along the full 1-inch length under head
• 1/4-inch internal hex drive for use with standard hex keys or Allen drivers
• Alloy steel construction meets ASTM A574 high-strength socket screw standard
• Black oxide finish reduces surface corrosion and minimizes glare in service environments
• Conforms to ASME/ANSI B18.3 dimensional standard

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for general mechanical assemblies requiring a 5/16-24 UNF fine-thread fastener with a 1/4-inch hex drive.

Installation Notes

Install using a calibrated 1/4-inch hex key or socket driver. Ensure mating threads are clean and free of debris before installation. Do not exceed the rated tensile strength of the fastener by over-torquing; refer to published ASTM A574 torque tables for the appropriate value. Wear appropriate PPE when working with power fastening tools in mechanical assemblies.