Description
INTERCHANGEABLE BITS
Sign | Size | Screw | Tohnichi Original Bit | Common (Standard) | Common (Standard) | Tohnichi Original Bit | Tohnichi Original Bit | Tohnichi Original Bit | Common (Standard) |
||
---|---|---|---|---|---|---|---|---|---|---|---|
Plus ⊕ | 0 | #0 (S-0) | Refer to table A | 104 | 109 | 115 | |||||
1 | #1 (H-1) | Refer to table A | 85 | 106 | 84 | 116 | |||||
2 | #2 (H-2) | Refer to table A | 86 | 107 | 80 | ||||||
3 | #3 (H-3) | Refer to table A | 87 | 81 | 35 | 700 | |||||
4 | #4 (H-4) | Refer to table A | 36 | ||||||||
Minus ⊖ | 10 | 0.15 x 1 | Refer to table B | 111 | |||||||
11 | 0.2 x 1.5 | Refer to table B | 112 | ||||||||
12 | 0.3 x 2 | Refer to table B | 113 | ||||||||
13 | 0.4 x 2.4 | Refer to table B | 105 | ||||||||
14 | 0.6 x 3.8 | Refer to table B | 108 | ||||||||
15 | 0.7 x 7 | Refer to table B | 88 | ||||||||
16 | 0.9 x 7 | Refer to table B | 89 | ||||||||
17 | 1 x 10 | Refer to table B | 37 | ||||||||
18 | 1 x 12 | Refer to table B | 38 | ||||||||
19 | 1.2 x 17 | Refer to table B | 39 | ||||||||
20 | 1.6 x 10 | Refer to table B | 82 | ||||||||
21 | 1.2 x 8 | Refer to table B | 83 | ||||||||
Box ◎ | Hex Bolt | ||||||||||
W5.5 | 5.5 | M3 | 91 | ||||||||
W6 | 6 | (M3.5) | 95 | ||||||||
W7 | 7 | M4 | 92 | ||||||||
W8 | 8 | (M.5) m5 | 93 | ||||||||
W10 | 10 | M6 | 94 | ||||||||
Hex ⎔ | Cap Screw | Set Screw | |||||||||
W1.27 | 1.27 | M2.5 | 56 | ||||||||
W1.5 | 1.5 | M3 | 57 | ||||||||
W2 | 2 | M2.5 | M4 | 58 | |||||||
W2.5 | 2.5 | M3 | M5 | 59 | |||||||
W3 | 3 | M4 | M6 | 60 | |||||||
W4 | 4 | M5 | M8 | 61 | |||||||
W5 | 5 | M6 | M10 | 62 | |||||||
W6 | 6 | M8 | M12 (M14) | 63 | |||||||
W8 | 8 | M10 | M16 (M18) | 64 | |||||||
Square Drive ▢ | ▢2 | ▢6.35 | (1/4) | 33 | |||||||
▢3 | ▢9.53 | (3/8) | 34 | ||||||||
Hexalobular ✶ | Flat Head | Socket Head | Set Screw | ||||||||
T5 | M2 | M2.5 | 470 | ||||||||
T6 | M2 | M3 | 471 | ||||||||
T7 | M3.5 | ||||||||||
T8 | M2.5 | M2.5 | M4 | 472 |
Bolt Head Shape (Ref.)
Nominal Size of Screw (d) | Hex head Bolt (B) | Hex head Bolt (B) | Small Hex Head Bolt (B) | High Strength Hex Bolt for Friction Grip Joint (B) | Hex Socket Head Cap Screw (B) | Hex Socket Set Screw (B) |
---|---|---|---|---|---|---|
M2.5 | 4.5 | - | - | - | 2 | 1.27 |
M3 | 5.5 | - | - | - | 2.5 | 1.5 |
(M3.5) | 6 | - | - | - | - | - |
M4 | 7 | - | - | - | 3 | 2 |
(M4.5) | 8 | - | - | - | - | - |
M5 | 8 | - | - | - | 4 | 2.5 |
M6 | 10 | - | - | - | 5 | 3 |
(M7) | 11 | - | - | - | - | - |
M8 | 13 | - | 12 | - | 6 | 4 |
M10 | 16 | 17 | 14 | - | 8 | 5 |
M12 | 18 | 19 | 17 | 22 | 10 | 6 |
(M14) | 21 | 22 | 19 | - | 12 | 6 |
M16 | 24 | - | 22 | 27 | 14 | 8 |
(M18) | 27 | - | 24 | - | 14 | 8 |
M20 | 30 | - | 27 | 32 | 17 | 10 |
(M22) | 32 | 34 | 30 | 36 | 17 | - |
M24 | 36 | - | 32 | 41 | 19 | - |
(M27) | 41 | - | 36 | 46 | 19 | - |
M30 | 46 | - | 41 | 50 | 22 | - |
(M33) | 50 | - | 46 | - | 24 | - |
M36 | 55 | - | 50 | - | 27 | - |
(M39) | 60 | - | 55 | - | 27 | - |
M42 | 65 | - | - | - | 32 | - |
JIS | JIS B 1180 | JIS B 1180 | JIB B 1180 | JIS B 1186 | JIB B 1176 | JIS B 1177 |