INCH METRIC A B C INCH METRIC A B C INCH  METRIC A B C
TYPE I – COARSE AND
FINE		  TYPE II – COARSE
AND FINE (CONTINUED)		 TYPE IV – COARSE AND FINE*
2-56 M2.2 2-7/16 2 5/16 7/16* M10 &11 5-1/4 25/32 3-23/32 9/16* M14 5-3/8 2-7/8 1-1/8
3-56 — 6 3 5/8 1/2* M12 5-1/2 7/8 3-23/32 5/8* M16 5-3/8 2-7/8 1-1/8
TYPE II – COARSE
AND FINE		 TYPE III – COARSE 3/4* M18 6 2-7/8 1-1/2
NO. 4 M2.5 4-5/8 3/8 2-9/32 9/16* — 4-7/8 1-13/16 4 7/8* M20 6-3/8 2-7/8 1-1/2
NO. 5 M3 4-5/8 3/8 2-9/32 5/8* — 4-7/8 2 4 1-14* M22 5-7/8 2-7/8 1-5/8
NO. 6 M3.5 4-5/8 3/8 2-9/32 3/4* M18 4-7/8 2-3/8 4 1-12* M24 5-7/8 2-7/8 1-5/8
NO. 8 M4 4-5/8 3/8 2-9/32 7/8* M20 4-7/8 2-3/4 4-1/2 1-1/8* M30 6-5/16 3-1/16 2
NO. 10 M5 4-5/8 15/32 2-9/32 1* M24 4-7/8 2-1/8 4-1/2 1-1/4* M33 6-13/16 3-5/16 2
NO. 12 — 4-5/8 33/64 2-17/32 1-1/8* M30 6-3/4 2-1/2 6 1-3/8* M36 7-5/16 3-9/16 2-1/4
1/4* M6 4-5/8 33/64 2-17/32 1-1/4* M33 6-3/4 2-3/4 6 1-1/2* M39 7-13/16 3-13/16 2-1/4
5/16* — 4-5/8 5/8 3-23/32 1-3/8* M36 6-3/4 3 6 1-64 M2 2-5/8 3/4 7/16
3/8* M7 & 8 5 45/64 3-23/32 1-1/2* M39 6-3/4 3-1/4 6