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h stock standard, ) check stock EU, f check stock JP, m stock exhaustion
UNC TCTR Ø Hole Ø Code THCHT LF THL LU LS DCON K LK NOF Type Stock Intro
(tolerance) (mm) (mm) (chamfer) ( inch ) ( inch ) ( inch ) ( inch ) ( inch ) ( inch ) ( inch )
ANSI
GH3 3.89 3.9 Y85609 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f
No.10-24UNC
GH5 3.89 3.9 Y85639 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f SP
GH3 5.1 5.19 Y85613 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f
1/4-20UNC
GH5 5.1 5.19 Y85643 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f
GH3 6.6 6.65 Y85615 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f
5/16-18UNC SL
GH5 6.6 6.65 Y85645 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f
GH3 8 8.07 Y85617 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f ANSI
3/8-16UNC
GH5 8 8.07 Y85647 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f
GH3 9.4 9.45 Y85619 5P 3.156 0.866 - - 0.32 0.242 0.406 3 007 f PO
7/16-14UNC
GH5 9.4 9.45 Y85649 5P 3.156 0.866 - - 0.32 0.242 0.406 3 007 f
GH3 10.9 10.91 Y85621 5P 3.375 0.984 - - 0.37 0.275 0.437 3 007 f
1/2-13UNC
GH5 10.9 10.91 Y85651 5P 3.375 0.984 - - 0.37 0.275 0.437 3 007 f
5/8-11UNC GH3 13.6 13.75 Y85625 5P 3.812 1.083 - - 0.48 0.36 0.562 3 007 f ST
3/4-10UNC GH3 16.6 16.7 Y85627 5P 4.25 1.201 - - 0.59 0.442 0.687 3 007 f
UNF TCTR Ø Hole Ø Code THCHT LF THL LU LS DCON K LK NOF Type Stock
(tolerance) (mm) (mm) (chamfer) ( inch ) ( inch ) ( inch ) ( inch ) ( inch ) ( inch ) ( inch )
ROLL
ANSI
GH3 4.1 4.12 Y85610 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 )
GH4 4.1 4.12 Y85630 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f
No.10-32UNF GH5 4.1 4.12 Y85640 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f CARBIDE
GH6 4.1 4.12 Y85661 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f
GH7 4.1 4.12 Y85670 5P 2.375 0.531 0.875 - 0.19 0.152 0.25 3 030 f
GH3 5.5 5.53 Y85614 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 )
GH4 5.5 5.53 Y85631 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f LONG
1/4-28UNF GH5 5.5 5.53 Y85644 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f
GH6 5.5 5.53 Y85662 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f
GH7 5.5 5.53 Y85674 5P 2.5 0.591 1 - 0.26 0.191 0.312 3 006 f HAND
GH3 6.9 6.97 Y85616 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 ) TAPS
GH4 6.9 6.97 Y85632 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f
5/16-24UNF GH5 6.9 6.97 Y85646 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f
GH6 6.9 6.97 Y85663 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f EG (STI)
GH7 6.9 6.97 Y85676 5P 2.718 0.669 1.125 - 0.32 0.238 0.375 3 006 f
GH3 8.5 8.57 Y85618 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 )
GH4 8.5 8.57 Y85633 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f SPECIAL
3/8-24UNF GH5 8.5 8.57 Y85648 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f THREADS,
GAUGES
GH6 8.5 8.57 Y85664 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f
GH7 8.5 8.57 Y85678 5P 2.937 0.748 1.25 - 0.38 0.286 0.437 3 006 f
GH3 9.9 9.96 Y85620 5P 3.156 0.866 - - 0.32 0.242 0.406 3 007 f THREAD
7/16-20UNF MILLS
GH5 9.9 9.96 Y85650 5P 3.156 0.866 - - 0.32 0.242 0.406 3 007 f
GH3 11.5 11.54 Y85622 5P 3.375 0.984 - - 0.37 0.275 0.437 3 007 f
1/2-20UNF
GH5 11.5 11.54 Y85652 5P 3.375 0.984 - - 0.37 0.275 0.437 3 007 f
5/8-18UNF GH3 14.5 14.6 Y85626 5P 3.812 1.083 - - 0.48 0.36 0.562 3 007 f DIES
3/4-16UNF GH3 17.5 17.59 Y85628 5P 4.25 1.201 - - 0.59 0.442 0.687 3 007 f
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 off ers a wide range of alternative
tap classes allowing each customer to select the most suitable one according to application requirement. 209
Check page 673 of Technical info for full details.
