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The VALUE COLLECTION 580973PS is a 1/2-13 UNC flat head slotted machine screw made from steel with a zinc finish. It measures 2-3/4 inches in overall length and uses a 1/2-13 thread size. The flat head profile seats flush with or below the surface of the mating material, making it suitable for assemblies where a low-profile fastener is required. The slotted drive accepts a standard flat-blade screwdriver. This screw meets ASME B18.6.3 and SAE J82 standards and carries a Grade J82 material designation. Maintenance technicians, millwrights, and general tradespeople use this fastener in equipment assembly and repair applications.
This fastener is suited for general industrial and mechanical assembly work where a 1/2-13 UNC thread pitch and flat head profile are specified. Common applications include machine frames, brackets, enclosures, and structural panels where a flush or countersunk fastener is needed. The zinc finish provides a basic level of corrosion resistance for indoor or sheltered environments. It is sold in multiples of 5 units per order.
Designed as a standard inch-series machine screw for use in any application requiring a 1/2-13 UNC thread, flat head, slotted drive fastener per ASME B18.6.3.
A licensed mechanic or qualified tradesperson should verify that the mating material is properly tapped or threaded to 1/2-13 UNC before installation. Depower and de-energize any equipment before fastener service. Use a correctly sized flat-blade screwdriver or bit to avoid cam-out and head damage. Do not exceed the torque capacity of the zinc-finished steel material; consult engineering data for the specific assembly.
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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