Tap ground-thread limit recommendations (GH1 through GH8) and pitch diameter limits for Class 2, 3, 2B, and 3B threads in UNC, UNF, and UNS sizes from 0-80 to 1 1/2-12.
Posts from September, 2026
Tandem Acme tap dimensions: sizes 1/4-16 through 2-4
Complete dimension table for tandem (dual style) Acme taps from 1/4-16 to 2-4 pitch. Includes overall length, shank diameter, square dimensions, and maximum nut depth.
PG steel conduit taps per DIN 40430 (80° metric thread)
PG steel conduit tap dimensions per DIN 40430 with 80° thread form (40° per side). Sizes PG 7 through PG 48 with outside diameters, threads per inch, and recommended drill sizes.
Metric tap recommendations for ISO thread classes 4H and 6H
Reference guide for ISO metric tap designations D1-D9 with pitch diameter limits for thread classes 4H and 6H, covering sizes M1.5 to M39 in coarse and fine pitches.
Metric Conversions: Fractional, Decimal & mm Chart
Complete conversion table for fractional inches, decimal inches and millimeters. Covers all 64th-inch increments from 1/64″ to 1″ with formulas for machinists.
Tap terminology and design reference (illustrated)
Illustrated reference of tap terminology: blank designs, thread dimensions, flute geometry, relief types, hook angles, and rake angles with labeled diagrams.
Form tap thread information and advantages
Form tap (fluteless tap) thread forming process, advantages, lubrication requirements, and hole diameter selection for internal threads without chip removal.
Quantum PM4 high performance taps: stock sizes and part numbers
Complete stock list of Quantum PM4 taps in Class 2B (imperial) and Class 6H (metric) threads. Spiral point, spiral flute, and roll form TiN coated taps with ANSI shanks and DIN lengths.
Tapping formulas and calculations for UNC, UNF, M and MF taps
Complete formulas for calculating RPM, feed rate, and tap drill size for UNC/UNF and M/MF cut taps and form taps, including percentage of thread requirements.
Quantum Tap Manufacturer | Taylor Tool Canada
Taylor Tool manufactures quantum taps and precision threading tools in Canada since 1918. Custom tap solutions for aerospace, automotive, and industrial applications.