Overall lengthThread lengthThread + Neck lengthShank lengthShank dia.Size of squareLength of square
LℓnℓsDsKℓk

N-RS Roll Taps for Non-Ferrous Materials ANSI

SizeClassCodeChamferL (inch)ℓ (inch)ℓn (inch)ℓs (inch)Ds (inch)K (inch)ℓk (inch)LobeTYPE
7/16-20UNFH7388499M2P3.9370.906-2.0080.3230.2420.40664
1/2-13UNCH5388506M4P4.3311.024-2.2050.3670.2750.43764
1/2-13UNCH5388504M2P4.3311.024-2.2050.3670.2750.43764
1/2-13UNCH7388507M4P4.3311.024-2.2050.3670.2750.43764
1/2-13UNCH7388505M2P4.3311.024-2.2050.3670.2750.43764
1/2-20UNFH5388510M4P4.3311.024-2.2050.3670.2750.43764
1/2-20UNFH5388508M2P4.3311.024-2.2050.3670.2750.43764
1/2-20UNFH7388511M4P4.3311.024-2.2050.3670.2750.43764
1/2-20UNFH7388509M2P4.3311.024-2.2050.3670.2750.43764

Number of oil grooves : Metric thread : =1 Unified thread : No.4 and smaller=non, No.5 and larger=1 For M6, 1/4 and smaller, external centers of 2P chamfer taps are removed.