Size ClassCode ChamferLℓnℓsDsKℓkNo. of
(mm)(mm)(mm)(mm)(mm)(mm)(mm)flutes Type Stock
No.10-24UNCP2SPQUNAMX2.5P601322335.54.5733
No.10-32UNFP2SPQUNAJX2.5P601322335.54.5733
1/4-20UNCP2SPQU04NX2.5P6215263364.5733
1/4-28UNFP2SPQU04KX2.5P6215263364.5733
5/16-18UNCP2SPQU05OX2.5P7019-366.25835
5/16-24UNFP2SPQU05MX2.5P7019-366.25835
3/8-16UNCP2SPQU06PX2.5P7523-3875.5835
3/8-24UNFP2SPQU06MX2.5P7523-3875.5835
7/16-14UNCP3SPRU07QX2.5P8226-428.56.5935
7/16-20UNFP2SPQU07NX2.5P8226-428.56.5935
1/2-13UNCP3SPRU08RX2.5P8826-4510.581135
1/2-20UNFP2SPQU08NX2.5P8826-4510.581135
5/8-11UNCP3SPRU10UX2.5P9526-4812.5101335
5/8-18UNFP2SPQU10OX2.5P9526-4812.5101335
3/4-10UNCP3SPRU12VX2.5P10533-5015121546
3/4-16UNFP3SPRU12PX2.5P10533-5015121546
7/8-9UNCP3SPRU14WX2.5P11533-5517131646
7/8-14UNFP3SPRU14QX2.5P11533-5517131646
1 -8UNCP3SPRU16XX2.5P12539-5819151846
1 -12UNFP3SPRU16SX2.5P12539-5819151846

For Whitworth Threads

Size ClassCode ChamferLℓnℓsDsKℓkNo. of
(mm)(mm)(mm)(mm)(mm)(mm)(mm)flutes Type Stock
3/16W24P2SPQW03MX2.5P601321335.54.5733
1/4W20P2SPQW04NX2.5P6215263364.5733
5/16W18P2SPQW05OX2.5P7019-366.25835
3/8W16P2SPQW06PX2.5P7523-3875.5835
7/16W14P3SPRW07QX2.5P8226-428.56.5935
1/2W12P3SPRW08SX2.5P8826-4510.581135
5/8W11P3SPRW10UX2.5P9526-4812.5101335
3/4W10P3SPRW12VX2.5P10533-5015121546
7/8W9P3SPRW14WX2.5P11533-5517131646
1 W8P3SPRW16XX2.5P12539-5819151846