Value Collection 211289PR Flat Socket Cap Screw 1/2-13x3/4 in

Product Description

The VALUE COLLECTION 211289PR is a flat socket cap screw designed for flush or countersunk fastening applications where a low-profile head is required. It features an 82-degree flat head with a 5/16-inch hex socket drive and is sized at 1/2-13 UNC thread by 3/4 inches overall length. The screw is fully threaded and manufactured from alloy steel with a black oxide finish that provides moderate corrosion resistance and reduces light reflection. This fastener meets ASME/ANSI B18.3 and ASTM F835 standards. It is installed by machinists, maintenance technicians, and industrial mechanics using a standard hex key or Allen driver.

This flat socket cap screw is suited for use in machine assemblies, tooling fixtures, and equipment enclosures where the fastener head must sit flush or below the surface of the mating material. The 1/2-13 UNC thread is a common coarse-thread designation used widely in general industrial and mechanical applications. The black oxide finish makes this screw a practical choice in environments where a non-reflective, low-profile fastener is preferred.

Key Features

• 82-degree flat head for flush or countersunk installation
• 5/16-inch hex socket drive for reliable torque transfer
• Fully threaded along the 3/4-inch overall length
• 1/2-13 UNC coarse thread standard
• Alloy steel construction for high tensile strength
• Black oxide finish for moderate corrosion resistance and low reflectivity

Compatibility

Designed as an OEM-style replacement or standard-service flat socket cap screw for any application requiring a 1/2-13 UNC fully threaded flat-head fastener conforming to ASME/ANSI B18.3 and ASTM F835.

Installation Notes

Installation requires a 5/16-inch hex key or Allen driver. Before installation, verify that the mating countersink angle matches the 82-degree head geometry to ensure proper seating and load distribution. Apply appropriate thread lubricant or thread-locking compound per the assembly specification. Follow applicable ASME or facility torque guidelines for 1/2-13 fasteners in the material being joined.