Value Collection 201145PR Button Socket Cap Screw 5/16-24

Product Description

The VALUE COLLECTION 201145PR is a 5/16-24 fully threaded button socket cap screw designed for precision fastening in mechanical assemblies, machinery, and fabrication applications. Made from alloy steel with a black oxide coating, this fastener delivers solid corrosion resistance and hardness in the 36-43 HRC range. The low-profile button head keeps the fastener below or flush with surrounding material surfaces where clearance is limited. It is driven with a 3/16-inch hex socket and conforms to ANSI/ASME B18.3 and ASTM F835 standards. Machinists, fabricators, and maintenance technicians are the primary installers of this fastener type.

This screw is suited for use in light to medium-duty mechanical assemblies where a low-profile head is required and UNF thread engagement is preferred. The 5/16-24 UNF thread standard provides finer thread pitch than UNC equivalents, making it a common choice for applications requiring controlled torque and vibration resistance. The black oxide finish blends into dark-colored housings and reduces light reflection in optical or precision equipment environments. This screw is sold in minimum order quantities of 100.

Key Features

• 5/16-24 UNF thread for fine-pitch engagement and vibration resistance
• Alloy steel construction with 36-43 HRC hardness rating
• Black oxide coating provides mild corrosion resistance and low-reflectance finish
• Low-profile button head design for clearance-critical installations
• Driven by 3/16-inch hex socket — standard Allen key compatible
• Meets ANSI/ASME B18.3 and ASTM F835 dimensional and material standards
• Fully threaded along the shank length

Compatibility

Designed as a standard UNF button socket cap screw for use in mechanical assemblies, fixtures, and equipment requiring a 5/16-24 thread and low-profile head geometry.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/16-inch hex key or socket driver. Ensure the mating threaded hole meets the Class 3A thread fit tolerance before installation. Apply thread-locking compound if the assembly is subject to vibration. Do not exceed the rated torque range for the alloy steel grade — consult the applicable ASME standard for torque specifications.