Identifies Threads Plus Gives Drill & Tap Sizes
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.
Big Book Catalog, Issue:72, Page:442
Big Book Catalog, Issue:72, Page:449
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 drills
for metric screws from 2mm to 7mm.