T SimpleThread Inspection ToolsOverall length LThread length T ℓhread+Neck length ℓnShank length ℓsShank dia. DsSize of square KLength of square ℓk
SizeClassCodeL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)TypeStock
M15×1For Go For Not-go6HITM6015MG ITM6015MN9512 10474812.510133 4
M16×2For Go For Not-go6HITM6016QG ITM6016QN9520 12474812.510133 4
M16×1.5For Go For Not-go6HITM6016OG ITM6016ON9520 12474812.510133 4
M16×1For Go For Not-go6HITM6016MG ITM6016MN9512 8474812.510133 4
M17×1.5For Go For Not-go6HITM6017OG ITM6017ON10019 1049511411143 4
M17×1For Go For Not-go6HITM6017MG ITM6017MN10012 1049511411143 4
M18×2.5For Go For Not-go6HITM6018RG ITM6018RN10025 1649511411143 4
M18×2For Go For Not-go6HITM6018QG ITM6018QN10020 1249511411143 4
M18×1.5For Go For Not-go6HITM6018OG ITM6018ON10020 1249511411143 4
M18×1For Go For Not-go6HITM6018MG ITM6018MN10012 849511411143 4
M20×2.5For Go For Not-go6HITM6020RG ITM6020RN10525 1655501512155 6
M20×2For Go For Not-go6HITM6020QG ITM6020QN10520 1255501512155 6
M20×1.5For Go For Not-go6HITM6020OG ITM6020ON10520 1255501512155 6
M20×1For Go For Not-go6HITM6020MG ITM6020MN10514 855501512155 6
M22×2.5For Go For Not-go6HITM6022RG ITM6022RN11533 1660551713165 6
M22×2For Go For Not-go6HITM6022QG ITM6022QN11520 1460551713165 6
M22×1.5For Go For Not-go6HITM6022OG ITM6022ON11520 1460551713165 6
M22×1For Go For Not-go6HITM6022MG ITM6022MN11514 860551713165 6
M24×3For Go For Not-go6HITM6024SG ITM6024SN12030 2065551915185 6
M24×2For Go For Not-go6HITM6024QG ITM6024QN12020 1465551915185 6
M24×1.5For Go For Not-go6HITM6024OG ITM6024ON12020 1465551915185 6
M24×1For Go For Not-go6HITM6024MG ITM6024MN12014 865551915185 6
For Unified Ti hreads
№2-56UNCFor Go For Not-go2BITM2UN2EG ITM2UN2EN424.5 3.5122632.551 2
For GoITM2UN2DG4.51
№2-64UNFFor Not-go2BITM2UN2DN423.5122632.552