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The HOLO-KROME 72210 is a partially threaded hex socket cap screw engineered for high-strength fastening in industrial and mechanical assemblies. It features a 7/16-14 UNC thread size and a 3-inch length under head, making it suitable for applications that require a secure grip through thicker workpieces. The 3/8-inch hex drive accepts a standard hex key or Allen driver for reliable torque transfer. Manufactured from alloy steel with a black oxide finish, this fastener provides improved corrosion resistance and reduces light glare in finished assemblies. Licensed HVAC, plumbing, and mechanical contractors rely on alloy steel cap screws like this one for equipment mounting, bracket fabrication, and structural fastening tasks.
This screw is appropriate for general industrial, mechanical, and trade-service applications where a strong, compact fastener is needed in metal-to-metal joints. The coarse 14 threads-per-inch pitch offers fast engagement and good resistance to loosening under vibration — a common concern in HVAC equipment bases, pump housings, compressor mounts, and similar service environments. It meets ASME B18.3 and ASTM A574 dimensional and mechanical standards, confirming its suitability for critical load-bearing connections.
Designed as an OEM-style replacement or service fastener for industrial and mechanical equipment requiring 7/16-14 UNC hex socket cap screws conforming to ASME B18.3 and ASTM A574.
Installation is typically performed by licensed mechanical contractors, millwrights, or qualified service technicians using a calibrated hex key or hex socket driver. Ensure mating threads are clean and free of debris before installation. Follow applicable ASME or equipment-manufacturer torque specifications for 7/16-14 fasteners — do not over-torque, as alloy steel cap screws can fracture if driven beyond their rated proof load. Verify thread engagement depth meets minimum requirements for the joint material before final 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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