SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)LobeTypeStock
M18×1.5G9HRZM9018OP HRZM9018OB4P 2P10033-5114111485
M20×1.5G9HRZM9020OP HRZM9020OB4P 2P10533-5015121586
For Unified Threads
SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)LobeTypeStock
No.2-56UNCG4 G5HRZM4UN2EB HRZM5UN2EB2P428.1-2732.5543
No.2-64UNFG4HRZM4UN2DB2P428.1-2732.5543
No.3-48UNCG4HRZM4UN3FB2P468.1142932.5544
No.3-56UNFG4HRZM4UN3EB2P468.1142932.5544
No.4-40UNCG5 G6HRZM5UN4HB HRZM6UN4HB2P469142643.2644
No.4-48UNFG5HRZM5UN4FB2P469142643.2644
No.5-40UNCG5HRZM5UN5HP HRZM5UN5HB4P 2P5211162954744
No.5-44UNFG5HRZM5UN5GP HRZM5UN5GB4P 2P5211162954744
No.6-32UNCG5 G6HRZM5UN6JP HRZM5UN6JB HRZM6UN6JP HRZM6UN6JB4P 2P 4P 2P5211162954744
No.6-40UNFG5HRZM5UN6HP HRZM5UN6HB4P 2P5211162954744
No.8-32UNCG6 G7HRZM6UN8JP HRZM6UN8JB HRZM7UN8JP HRZM7UN8JB4P 2P 4P 2P601321335.54.5744
No.8-36UNFG6HRZM6UN8IP HRZM6UN8IB4P 2P601321335.54.5744
No.10-24UNCG6 G7HRZM6UNAMP HRZM6UNAMB HRZM7UNAMP HRZM7UNAMB4P 2P 4P 2P601322335.54.5744
No.10-32UNFG6 G7HRZM6UNAJP HRZM6UNAJB HRZM7UNAJP HRZM7UNAJB4P 2P 4P 2P601322335.54.5744
No.12-24UNCG6HRZM6UNCMP HRZM6UNCMB4P 2P6215263364.5744
No.12-28UNFG6HRZM6UNCKP HRZM6UNCKB4P 2P6215263364.5744
1/4-20UNCG7HRZM7U04NP HRZM7U04NB4P 2P6215263364.5744
1/4-28UNFG7HRZM7U04KP HRZM7U04KB4P 2P6215263364.5744

Number of oil grooves : Metric thread : M2.6 and smaller=non, M3~M7=2, M8=3, M10 and larger=4 Unified thread : No.4 and smaller=non, No.5 and larger=2 For M6 and smaller, external centers of 2 thread chamfer taps are removed.