Brownells Screw Chek'R
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$19.99
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Brownells Screw Chek'R, Tells size, threads-per-inch, diameter, length, tap series, body drill size, and tap drill for machine screws; use to check size of wood and sheet metal screws plus standard rivets. Covers all standard sizes, including 6-48. Use to cut unhardened screws to length, straighten bent screws or battered threads. Mfg: Brownells SPECS: Hardened steel, satin chrome plated. 3" (7.6cm) x 5" (12.7cm). With instructions. U.S. Thread Model - Checks #1 through 5/16" in NC, NS, and NF threads. 3" (7.6cm)- x 5" (12.7cm). Metric Thread Model - Gives diameter and length in inches and mm, pitch in mm, plus tap and clearance dri