LS-SP LongShankSpiral Fluted TapsOverall length LChamfer+ full thread ℓtThrea length ℓd Thread+ leng ℓNeck th l nShank ength ℓsShank dia. DsSize of square KLength of square ℓk
SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
M16×1.5P2SPQ016OL15 SPQ016OL202.5P150 20026-6012.5101332○ △
M18×2.5P3SPR018RL15 SPR018RL20 SPR018RL252.5P150 200 25033-7014111442○ △
M18×1.5P2SPQ018OL15 SPQ018OL202.5P150 20033-7014111442○ △
M20×2.5P3SPR020RL15 SPR020RL20 SPR020RL252.5P150 200 25033-7015121543◎ △
M20×1.5P3SPR020OL15 SPR020OL202.5P150 20033-7015121543○ △
M22×2.5P3SPR022RL15 SPR022RL202.5P150 20033-7017131643
M22×1.5P3SPR022OL15 SPR022OL202.5P150 20033-7017131643○ △
M24×3P3SPR024SL15 SPR024SL20 SPR024SL252.5P150 200 25039-8019151843○ ◎ △
M24×2P3SPR024QL202.5P20039-8019151843
M24×1.5P3SPR024OL15 SPR024OL202.5P150 20039-8019151843○ △
M27×3P3SPR027SL20 SPR027SL252.5P200 25039-8020151843
M27×2P3SPR027QL202.5P20039-8020151843
M27×1.5P3SPR027OL20 SPR027OL252.5P200 25039-8020151843
M30×3.5P4SPS030TL20 SPS030TL25 SPS030TL302.5P200 250 30046-8023172043
M30×1.5P3SPR030OL20 SPR030OL252.5P200 25046-8023172043
For Unified Threads
SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
1/4-20UNCP2SPQU04NL10 SPQU04NL152.5P100 15015264064.5731
1/4-28UNFP2SPQU04KL10 SPQU04KL152.5P100 15015264064.5731
5/16-18UNCP2SPQU05OL10 SPQU05OL152.5P100 15019-506.25832
5/16-24UNFP2SPQU05ML10 SPQU05ML152.5P100 15019-506.25832
3/8-16UNCP2SPQU06PL10 SPQU06PL15 SPQU06PL202.5P100 150 20023-5075.5832
3/8-24UNFP2SPQU06ML10 SPQU06ML152.5P100 15023-5075.5832
7/16-14UNCP3SPRU07QL152.5P15026-508.56.5932
7/16-20UNFP2SPQU07NL152.5P15026-508.56.5932