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The VALUE COLLECTION 131203PR is a 1/2-20 UNF alloy steel set screw with an oval point, designed for secure fastening applications where the screw must lock against a shaft or surface without protruding. Manufactured to Grade 8 alloy steel specification, it delivers high tensile strength suitable for demanding mechanical assemblies. The 1/4-inch internal hex drive accepts a standard hex key for installation. This fastener conforms to ASME/ANSI B18.3 and ASTM F912 standards, making it appropriate for applications where dimensional and mechanical compliance is required. It is commonly installed by maintenance technicians, millwrights, and mechanical contractors in industrial and commercial settings.
This set screw is used in collar, pulley, gear, and hub locking applications where a flush or near-flush fastener is needed. The oval point concentrates load on a small contact area, making it well-suited for locking against hardened or finished shafts without causing significant surface damage. It is applicable in general industrial machinery, conveyor systems, and drive assemblies requiring a reliable UNF-threaded locking fastener.
Designed as an OEM-style replacement or standard fastener for any application requiring a 1/2-20 UNF oval point set screw with a 1/4-inch hex drive conforming to ASME/ANSI B18.3 and ASTM F912.
Installation should be performed by a qualified technician using a properly sized 1/4-inch hex key to avoid rounding the drive socket. Ensure the receiving tapped hole is clean and free of debris before threading the screw. Do not over-torque, as this can damage the oval point or strip the alloy steel threads. Minimum order quantity is 10 units per order.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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