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VESSEL
GENERL CATALOGUE

SUPPORT

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


Hexagon head tapping screw
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


Tapping 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

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
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