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The VALUE COLLECTION R52001096 is a partially threaded hex head cap screw sized at 1-1/2-6 UNC with a 4-inch length under head. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener provides corrosion resistance suitable for general-purpose mechanical and structural applications. The 2-1/4-inch hex drive allows use with standard hex wrenches and impact drivers. At 2.9 pounds, this is a heavy-duty fastener intended for bolted assemblies where partial thread engagement and a wide hex bearing surface are required. It conforms to ASME B18.2.1 and SAE J429 dimensional and mechanical standards.
This cap screw is suited for use in equipment fabrication, mechanical assemblies, and structural connections across industrial, commercial, and trade-service environments. The partial thread configuration is typical for through-bolt applications where a smooth shank under the head reduces stress concentration. HVAC equipment frames, pump mounts, electrical enclosure assemblies, and general mechanical bracketing are common installation contexts for a fastener in this size class.
Designed as a general-purpose Grade 2 hex head cap screw conforming to ASME B18.2.1, suitable for use in any application requiring a 1-1/2-6 UNC partially threaded fastener with a 4-inch length under head.
Installation is performed by maintenance technicians, millwrights, or licensed trade professionals depending on the assembly context. Power down or de-energize any equipment before replacing or installing fasteners in electrical or mechanical enclosures. Use a properly sized 2-1/4-inch hex wrench or socket to avoid rounding the drive surface. Always confirm thread engagement and torque to the specification required by the equipment manufacturer or the applicable structural standard for the 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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