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The VALUE COLLECTION SK-3 is a mandrel designed for use in drilling and fastening applications where a guided pilot hole is required. Measuring 1/4 inch in diameter by 1 inch in length, this mandrel features a 5/16-18 threaded shank and a 1/4 inch pilot hole diameter. It is a compact, single-piece tool accessory used to drive or position fasteners and related hardware with precision. Machinists, maintenance technicians, and trade professionals working with threaded fastener systems will find this mandrel suited to bench or field use where repeatable alignment is needed.
This mandrel is intended for use in applications requiring a 5/16-18 thread size and a 1/4 inch pilot hole. It is commonly used in manufacturing, maintenance, and repair operations across industrial and light commercial settings. The part is packaged and sold as a single unit, making it a straightforward replacement or supplemental tool for existing fastener or mandrel-driven setups.
Designed for use with the SK-3 mandrel system. Verify thread size and pilot hole diameter match the target application before installation.
Installation should be performed by a qualified technician familiar with threaded fastener tooling. Ensure the receiving component is clean and free of debris before seating the mandrel. Use appropriate hand tools or a torque wrench to engage the 5/16-18 thread without over-tightening. Do not force the mandrel into an undersized or damaged pilot hole.
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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