Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk⑥ ANSI Size Class Code Chamfer L (inch) ℓ(inch) ℓn(inch) ℓs(inch) Ds(inch) K(inch) ℓk(inch) Lobe TYPE7/16-14UNCH951111030982P3.9370.512-2.0080.3230.2420.40683 ① 7/16-20UNF H8 5110103101 4P 3.937 0.512 - 2.008 0.323 0.242 0.406 8 3 7/16-20UNF H8 5111103101 2P 3.937 0.512 - 2.008 0.323 0.242 0.406 8 3 1/2-13UNC H9 5110103111 4P 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 1/2-13UNC H9 5111103111 2P 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 ② 1/2-20UNF H8 5110103115 4P 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 1/2-20UNF H8 5111103115 2P 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 9/16-12UNC H10 5110103126 4P 4.331 0.709 - 2.205 0.429 0.322 0.5 8 3 9/16-12UNC H10 5111103126 2P 4.331 0.709 - 2.205 0.429 0.322 0.5 8 3 9/16-18UNF H9 5110103129 4P 4.331 0.709 - 2.205 0.429 0.322 0.5 8 3 ③ 9/16-18UNF H9 5111103129 2P 4.331 0.709 - 2.205 0.429 0.322 0.5 8 3 Number of oil grooves : 1/4 and smaller = 5, 5/16 = 6, 3/8 and larger = 8 For 1/4 and smaller, external centers of 2P chamfer taps are removed. ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑥-10