DRIVER, BIT AND SCREW CROSS-REFERENCE
Please refer to the following table to verify the size of screwdrivers, bits, or sockets suitable for a relevant application, by checking the diameter of screw or across flat size of bolt or nut (distance between the mark ">" and "<") with a caliper or scale.
 |
JIS B1101 JIS B1135 ･Slotted（Reference） |
|
|---|---|---|
 |
 Small screw mm |
 Wood screw mm |
 1.8 |
1(*) 1.2(*) |
- |
 2.5 |
1.6 | 1.6 1.8 |
 3 |
2 | 1.8 2.1 |
 4 |
2.2(*) 2.5 |
2.4 |
 4.5 |
2.5(*) 3 |
2.7 |
 5 |
3 (3.5) |
3.1 3.5 |
 5.5 |
(3.5) | 3.5 3.8 |
 6 |
(3.5) 4 |
3.8 4.1 |
 7 |
4 | 4.5 4.8 |
 8 |
4.5(*) 5 |
5.1 5.5 |
 9 |
6 8(*) |
5.2 6.2 6.8 |
 10 |
6 8(*) |
7.5 8 |
 |
JIS B1111 JIS B1122 JIS B1112 JIS B1124 JCIS 10-70 ・Philips ･Pozidriv ･Supadriv |
||||
|---|---|---|---|---|---|
 |
 |
 Small screw mm |
 Tapping screw mm |
 Wood screw mm |
 Drill screw mm |
 No.0 |
 PZ  SDV No.0 |
1.4 1.6 1.7 2 2.3 2.6 |
2.2(ST) | 1.8 | - |
 No.1 |
 PZ  SDV No.1 |
2 (2.2) (2.3) 2.5 2.6 3(*･T) |
2 2.5 3(*･T) 2.9(ST) |
2.1 2.4 2.7 |
2.9(ST) |
 No.2 |
 PZ  SDV No.2 |
3 (3.5) 4 (4.5) 5 |
3 3.5 4 4.5 5 3.5(ST) 4.2(ST) 4.8(ST) |
3.1 3.5 3.8 4.1 4.5 4.8 |
5 3.5(ST) 4.2(ST) 4.8(ST) |
 No.3 |
 PZ  SDV No.3 |
6 8 |
6 8 5.5(ST) 6.3(ST) |
5.1 5.5 5.8 6.2 6.8 |
6 5.5(ST) 6.3(ST) |
 No.4 |
 PZ  SDV No.4 |
10 12 |
8(ST) 9.5(ST) |
7.5 8 9.5 |
- |
(*)marked figures are in accordance with old JIS standards.
(*･T) Refer to No. 1 for Truss screws.
(ST) marked figures are in accordance with JIS standards.
 |
JIS B1176 JIS B1177 ･Hex ･Ball point |
|
|---|---|---|
 |
 Hexagon recess bolt mm |
 Hexagon recess locking screw mm |
 H1.5 |
1.6 2 |
3 |
 H2 |
2.5 | 4 |
 H2.5 |
3 | 5 |
 H3 |
4 | 6 |
 H4 |
5 | 8 |
 H5 |
6 | 10 |
 H6 |
8 | 12 |
 H8 |
10 | 16 |
 H10 |
12 | 20 |
 H12 |
14 | 24 |
 |
JIS B1180 JIS B1181 JIS B1123 ･Socket |
||
|---|---|---|---|
 |
 Hexagon head bolt mm |
 Hexagon nut mm |
|
 H4 |
2 | 2 | - |
 H4.5(*) |
- | 2.2(*) | - |
 H5 |
2.5 | 2.5 | 2.9 |
 H5.5 |
3 | 3 | 3.5 |
 H6 |
3.5 | 3.5 | - |
 H7 |
4 | 4 | 4.2 |
 H8 |
5 | 5 | 4.8 5.5 |
 H10 |
6 W1/4(*) |
6 W1/4(*) |
6.3 |
 H11(*) |
7(*) | 7(*) | - |
 H12(*･S) |
8(*･S) W5/6(*･S) |
8(*･S) W5/6(*･S) |
- |
 H13 |
8 | 8 | 8 |
 H14(*) |
10(*･S) W5/6(*･S) W3/8(*･S) |
10(*･S) W5/6(*･S) W3/8(*･S) |
- |
 H16 |
10 | 10 | 9.5 |
 H17(*) |
10(*) 12(*･S) W3/8(*･S) W7/16(*･S) |
10(*) 12(*･S) W3/8(*･S) W7/16(*･S) |
- |
 H18 |
12 | 12 | - |
 H19(*) |
12(*) 14(*･S) W7/16(*･S) W1/2(*･S) |
12(*) 14(*･S) W7/16(*･S) W1/2(*･S) |
- |
 H21 |
14 W1/2(*) |
14 W1/2(*) |
- |
 H22(*) |
14(*) | 14(*) | - |
 H24 |
16 18(*･S) |
16 18(*･S) |
- |
W: Refer to the old JIS standards for Whitworth screws.
(*) marked figures are in accordance with old JIS standards.
(*･S) marked figures are in accordance with old JIS standards for small bolts/nuts.
 |
JIS B1107 JIS B1128 JIS B1136 JASO F116-89 ･TORX（Reference） |
||||
|---|---|---|---|---|---|
 |
 Small screw mm |
|
 TORX recess bolt mm |
 TORX recess locking screw mm |
|
 T1 |
0.84 | 1 | 1 | - | 1.6 1.8 |
 T2 |
0.94 | 1.2 | 1.2 | - | 2 |
 T3 |
1.12 | 1.4 | 1.4 | - | 2.2 |
 T4 |
1.3 | 1.6 1.7 |
1.6 1.7 |
- | - |
 T5 |
1.37 | 2 | 2 | - | 2.5 |
 T6 |
1.65 | 2 | 2 | 2 | 3 |
 T7 |
1.97 | - | - | - | 3.5 |
 T8 |
2.3 | 2.5 | 2.5 | 2.5 | 4 |
 T9 |
2.48 | - | - | - | 4.5 |
 T10 |
2.72 | 3 | 2.9 3 3.5 |
3 | 5 |
 T15 |
3.26 | (3.5) | 3.5 | - | - |
 T20 |
3.84 | 4 | 4 4.2 4.5 |
4 | 6 |
 T25 |
4.4 | 5 | 4.8 5.5 |
5 | 7 |
 T27 |
4.96 | - | - | 4.5 5 |
8 |
 T30 |
5.49 | 6 | 6 6.3 |
6 | - |
 T40 |
6.6 | 8 | 8 | 8 | 10 |
 T45 |
7.77 | 8 | - | 8 | 12 |
 T50 |
8.79 | 10 | 10 | 10 | 14 |
