piral PointedTapOverall length LThread length ℓThread+Neck length ℓnShank length ℓsShank dia. DsSize of square KLength of square ℓk
PO Spiral PointedTaps
SizeClassCodeChamferL (inch)ℓ (inch)ℓn (inch)ℓs (inch)Ds (inch)K (inch)ℓk (inch)No. of flutesType
NO.5-44UNFGH1 GH2 GH3PSUN5G1NEB PSUN5G2NEB PSUN5G3NEB5P2.2050.4330.7681.3580.1410.110.18722
No.6-32UNCGH2 GH3PSUN6J2NEB PSUN6J3NEB5P2.2050.4330.7681.3580.1410.110.18722
No.6-40UNFGH2 GH3PSUN6H2NEB PSUN6H3NEB5P2.2050.4330.7681.3580.1410.110.18722
No.8-32UNCGH2 GH3PSUN8J2NEB PSUN8J3NEB5P2.480.5120.8271.5350.1680.1310.2522
NO.8-36UNFGH2 GH3PSUN8I2NEB PSUN8I3NEB5P2.480.5120.8271.5350.1680.1310.2522
No.10-24UNCGH2 GH3PSUNAM2NEB PSUNAM3NEB5P2.7560.5510.9841.6540.1940.1520.2522
No.10-32UNFGH2 GH3PSUNAJ2NEB PSUNAJ3NEB5P2.7560.5510.9841.6540.1940.1520.2522
NO.12-24UNCGH2 GH3PSUNCM2NEB PSUNCM3NEB5P3.150.5910.9841.9290.2200.1650.28122
NO.12-28UNFGH2 GH3PSUNCK2NEB PSUNCK3NEB5P3.150.5910.9841.9290.2200.1650.28122
1/4-20UNC 1/4-28UNFGH3 GH4 GH5 GH2 GH3 GH4PSU04N3NEB PSU04N4NEB PSU04N5NEB PSU04K2NEB PSU04K3NEB PSU04K4NEB4.5P 4.5P3.15 3.150.591 0.5911.181 1.1811.713 1.7130.255 0.2550.191 0.1910.312 0.3123 32 2
5/16-18UNCGH3 GH4 GH5PSU05O3NEB PSU05O4NEB PSU05O5NEB4.5P3.5430.7481.3781.8310.3180.2380.37533
5/16-24UNFGH3 GH4PSU05M3NEB PSU05M4NEB4.5P3.5430.7481.3781.8310.3180.2380.37533
3/8-16UNCGH3 GH5PSU06P3NEB PSU06P5NEB4.5P3.9370.9061.5352.0280.3810.2860.43733
3/8-24UNFGH3 GH4PSU06M3NEB PSU06M4NEB4.5P3.9370.9061.5352.0280.3810.2860.43733
7/16-14UNCGH4 GH5PSU07Q4NEB PSU07Q5NEB4.5P3.9370.906-2.0080.3230.2420.40634
7/16-20UNFGH3 GH4 GH5PSU07N3NEB PSU07N4NEB PSU07N5NEB4.5P3.9370.906-2.0080.3230.2420.40634
1/2-13UNCGH3 GH4 GH5PSU08R3NEB PSU08R4NEB PSU08R5NEB4.5P4.3311.024-2.2050.3670.2750.43734
1/2-20UNFGH3 GH4 GH5PSU08N3NEB PSU08N4NEB PSU08N5NEB4.5P4.3311.024-2.2050.3670.2750.43734
9/16-12UNCGH3 GH4 GH5PSU09S3NEB PSU09S4NEB PSU09S5NEB4.5P4.3311.024-2.2050.4290.3220.534
9/16-18UNFGH3 GH4 GH5PSU09O3NEB PSU09O4NEB PSU09O5NEB4.5P4.3311.024-2.2050.4290.3220.534