TYPE:3 TYPE:4

SizeClassCodeChamferL (inch)ℓ (inch)ℓn (inch)Ds (inch)K (inch)ℓk (inch)No. of flutesTYPE
1/4-20UNCGH5Y856435P2.50.59110.2550.1910.312l 32
1/4-28UNFGH3Y856145P2.50.59110.2550.1910.31232
1/4-28UNFGH4Y856315P2.50.59110.2550.1910.31232
1/4-28UNFGH5Y856445P2.50.59110.2550.1910.31232
1/4-28UNFGH6Y856625P2.50.59110.2550.1910.31232
1/4-28UNFGH7Y856745P2.50.59110.2550.1910.31232
5/16-18UNCGH3Y856155P2.7180.6691.1250.3180.2380.37533
5/16-18UNCGH5Y856455P2.7180.6691.1250.3180.2380.37533
5/16-24UNFGH3Y856165P2.7180.6691.1250.3180.2380.37533
5/16-24UNFGH4Y856325P2.7180.6691.1250.3180.2380.37533
5/16-24UNFGH5Y856465P2.7180.6691.1250.3180.2380.37533
5/16-24UNFGH6Y856635P2.7180.6691.1250.3180.2380.37533
5/16-24UNFGH7Y856765P2.7180.6691.1250.3180.2380.37533
3/8-16UNCGH3Y856175P2.9370.7481.250.3810.2860.43733
3/8-16UNCGH5Y856475P2.9370.7481.250.3810.2860.43733
3/8-24UNFGH3Y856185P2.9370.7481.250.3810.2860.43733
3/8-24UNFGH4Y856335P2.9370.7481.250.3810.2860.43733
3/8-24UNFGH5Y856485P2.9370.7481.250.3810.2860.43733
3/8-24UNFGH6Y856645P2.9370.7481.250.3810.2860.43733
3/8-24UNFGH7Y856785P2.9370.7481.250.3810.2860.43733
7/16-14UNCGH3Y856195P3.1560.866-0.3230.2420.40634
7/16-14UNCGH5Y856495P3.1560.866-0.3230.2420.40634
7/16-20UNFGH3Y856205P3.1560.866-0.3230.2420.40634
7/16-20UNFGH5Y856505P3.1560.866-0.3230.2420.40634
1/2-13UNCGH3Y856215P3.3750.984-0.3670.2750.43734
1/2-13UNCGH5Y856515P3.3750.984-0.3670.2750.43734
1/2-20UNFGH3Y856225P3.3750.984-0.3670.2750.43734
1/2-20UNFGH5Y856525P3.3750.984-0.3670.2750.43734
5/8-11UNCGH3Y856255P3.8121.083-0.480.360.56234
5/8-18UNFGH3Y856265P3.8121.083-0.480.360.56234
3/4-10UNCGH3Y856275P4.251.201-0.590.4420.68734
3/4-16UNFGH3Y856285P4.251.201-0.590.4420.68734