h stock standard, ) check stock EU, f check stock JP, m stock exhaustion UNF TCTR Ø Hole Ø(tolerance)(mm)(mm)CodeTHCHT(chamfer)LF LT THL LU LS DCON K LK(inch)(inch)(inch)(inch)(inch)(inch)(inch)(inch)NOFTypeStockIntro ANSI GH2 9.9 9.96 SSU07N2NEB 2.5P 3.937 - 0.906 - 2.008 0.32 0.242 0.406 3 007 f 7/16-20UNF GH3 9.9 9.96 SSU07N3NEB 2.5P 3.937 - 0.906 - 2.008 0.32 0.242 0.406 3 007 f SP GH5 9.9 9.96 SSU07N5NEB 2.5P 3.937 - 0.906 - 2.008 0.32 0.242 0.406 3 007 f ANSI GH2 11.5 11.54 SSU08N2NEB 2.5P 4.331 - 1.024 - 2.205 0.37 0.275 0.437 3 007 f GH3 11.5 11.54 SSU08N3NEB 2.5P 4.331 - 1.024 - 2.205 0.37 0.275 0.437 3 007 f 1/2-20UNF GH5 11.5 11.54 SSU08N5NEB 2.5P 4.331 - 1.024 - 2.205 0.37 0.275 0.437 3 007 f SL GH11 11.5 11.54 SSU08N-EEB 2.5P 4.331 - 1.024 - 2.205 0.37 0.275 0.437 3 007 f GH3 12.9 13 SSU09O3NEB 2.5P 4.331 - 1.024 - 2.205 0.43 0.322 0.5 3 007 f 9/16-18UNF GH4 12.9 13 SSU09O4NEB 2.5P 4.331 - 1.024 - 2.205 0.43 0.322 0.5 3 007 f PO GH5 12.9 13 SSU09O5NEB 2.5P 4.331 - 1.024 - 2.205 0.43 0.322 0.5 3 007 f GH3 14.5 14.6 SSU10O3NEB 2.5P 4.331 - 1.024 - 2.205 0.48 0.36 0.562 3 007 f GH4 14.5 14.6 SSU10O4NEB 2.5P 4.331 - 1.024 - 2.205 0.48 0.36 0.562 3 007 f 5/8-18UNF GH5 14.5 14.6 SSU10O5NEB 2.5P 4.331 - 1.024 - 2.205 0.48 0.36 0.562 3 007 f ST GH11 14.5 14.6 SSU10O-EEB 2.5P 4.331 - 1.024 - 2.205 0.48 0.36 0.562 3 007 f GH3 17.5 17.59 SSU12P3NEB 2.5P 4.921 - 1.299 - 2.52 0.59 0.442 0.687 4 007 f GH4 17.5 17.59 SSU12P4NEB 2.5P 4.921 - 1.299 - 2.52 0.59 0.442 0.687 4 007 f 3/4-16UNF GH5 17.5 17.59 SSU12P5NEB 2.5P 4.921 - 1.299 - 2.52 0.59 0.442 0.687 4 007 f ROLL GH11 17.5 17.59 SSU12P-EEB 2.5P 4.921 - 1.299 - 2.52 0.59 0.442 0.687 4 007 f GH3 20.5 20.57 SSU14Q3NEB 2.5P 5.512 - 1.299 - 2.795 0.7 0.523 0.75 4 007 f 7/8-14UNF GH4 20.5 20.57 SSU14Q4NEB 2.5P 5.512 - 1.299 - 2.795 0.7 0.523 0.75 4 007 f CARBIDE GH6 20.5 20.57 SSU14Q6NEB 2.5P 5.512 - 1.299 - 2.795 0.7 0.523 0.75 4 007 f GH3 23.3 23.46 SSU16S3NEB 2.5P 6.299 - 1.457 - 3.228 0.8 0.6 0.812 4 007 f GH4 23.3 23.46 SSU16S4NEB 2.5P 6.299 - 1.457 - 3.228 0.8 0.6 0.812 4 007 f 1 -12UNF GH5 23.3 23.46 SSU16S5NEB 2.5P 6.299 - 1.457 - 3.228 0.8 0.6 0.812 4 007 f LONG GH6 23.3 23.46 SSU16S6NEB 2.5P 6.299 - 1.457 - 3.228 0.8 0.6 0.812 4 007 f GH4 26.5 26.63 SSU18S4NEB 2.5P 7.087 - 1.732 - 3.622 0.9 0.672 0.875 4 007 f 1 1/8-12UNF GH5 26.5 26.63 SSU18S5NEB 2.5P 7.087 - 1.732 - 3.622 0.9 0.672 0.875 4 007 f HAND GH4 29.6 29.81 SSU20S4NEB 2.5P 7.087 - 1.929 - 3.622 1.02 0.766 1 4 007 f TAPS 1 1/4-12UNF GH5 29.6 29.81 SSU20S5NEB 2.5P 7.087 - 1.929 - 3.622 1.02 0.766 1 4 007 f GH4 32.8 32.98 SSU22S4NEB 2.5P 7.874 - 2.165 - 4.016 1.11 0.831 1.062 4 007 f 1 3/8-12UNF GH5 32.8 32.98 SSU22S5NEB 2.5P 7.874 - 2.165 - 4.016 1.11 0.831 1.062 4 007 f EG (STI) GH4 36 36.16 SSU24S4NEB 2.5P 7.874 - 2.323 - 4.016 1.23 0.925 1.125 4 007 f 1 1/2-12UNF GH5 36 36.16 SSU24S5NEB 2.5P 7.874 - 2.323 - 4.016 1.23 0.925 1.125 4 007 f SPECIAL THREADS, GAUGES THREAD MILLS DIES CENTER DRILLS Technical info The most suitable GH tap class to cut accurate 2B, 3B (UNJ) and 2B oversized internal threads tolerance, depends on application conditions and work-piece materials. Yamawa GH class system offers a wide range of alternative tap classes allowing each customer to select the most suitable one according to application requirement. 179 Check page 673 of Technical info for full details.