Value Collection 581354PR Hex Socket Cap Screw 12-28 Unf

Product Description

The VALUE COLLECTION 581354PR is a hex socket cap screw designed for high-strength fastening in mechanical assemblies, equipment fabrication, and maintenance applications. It features a 12-28 UNF thread size with a 1-inch length under head and is fully threaded along its entire shank. The screw is driven with a 5/32-inch hex key. Manufactured from alloy steel with a black oxide coating, it delivers corrosion resistance and surface hardness suited to demanding service environments. This fastener conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for precision and structural fastening work.

This screw is used in general industrial, mechanical, and trade-service applications where a low-profile, high-strength socket head cap screw is required. Typical installations include machinery, fixtures, enclosures, brackets, and equipment frames. The fine 28-thread-per-inch pitch provides greater thread engagement and resistance to loosening under vibration compared to coarse-thread equivalents. It is appropriate for use by machinists, millwrights, HVAC technicians, electricians, and general maintenance professionals.

Key Features

• 12-28 UNF fine thread for improved vibration resistance and precise torque control
• Fully threaded shank maximizes thread engagement along the full 1-inch length under head
• 5/32-inch hex drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 for high tensile strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring a 12-28 UNF fully threaded fastener with a 1-inch length under head.

Installation Notes

Install using a 5/32-inch hex key or socket bit driver. Ensure mating threads are clean and free of debris before installation. Apply thread-locking compound if vibration resistance beyond the fine-thread engagement is required. Do not exceed the rated torque for the alloy steel grade when fastening into softer base materials such as aluminum or plastic.