SP LH Spiral Fluted Taps for Left Hand Threads

SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
M18×1.5P2SPQ018O--L2.5P10033-5114111442
M20×2.5P3SPR020R--L2.5P10533-5015121543
M20×1.5P3SPR020O--L2.5P10533-5015121543
M22×2.5P3SPR022R--L2.5P11533-5517131643
M22×1.5P3SPR022O--L2.5P11533-5517131643
M24×3P3SPR024S--L2.5P12039-5519151843
M24×1.5P3SPR024O--L2.5P12039-5519151843
M27×3P3SPR027S--L2.5P13039-6020151843
M30×3.5P4SPS030T--L2.5P13546-6223172043
M30×2P3SPR030Q--L2.5P13546-6223172043
M30×1.5P3SPR030O--L2.5P13546-6223172043
For Unified Threadsi
SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
1/4-20UNCP2SPQU04N--L2.5P6215263364.57l 31
1/4-28UNFP2SPQU04K--L2.5P6215263364.5731
5/16-18UNCP2SPQU05O--L2.5P7019-366.25832
5/16-24UNFP2SPQU05M--L2.5P7019-366.25832
3/8-16UNCP2SPQU06P--L2.5P7523-3875.5832
3/8-24UNFP2SPQU06M--L2.5P7523-3875.5832
7/16-14UNCP3SPRU07Q--L2.5P8226-428.56.5932
7/16-20UNFP2SPQU07N--L2.5P8226-428.56.5932
1/2-13UNCP3SPRU08R--L2.5P8826-4510.581132
1/2-20UNFP2SPQU08N--L2.5P8826-4510.581132
For Whitworth Threads
SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
1/4W20P2SPQW04N--L2.5P6215263364.57l 31
5/16W18P2SPQW05O--L2.5P7019-366.25832
3/8W16P2SPQW06P--L2.5P7523-3875.5832
7/16W14P3SPRW07Q--L2.5P8226-428.56.5932
1/2W12P3SPRW08S--L2.5P8826-4510.581132
5/8W11P3SPRW10U--L2.5P9526-4812.5101332
3/4W10P3SPRW12V--L2.5P10533-5015121543