Printed in Taiwan
Symmetrical
joints have pins
A
on both
edges of the pin board, and sockets
B
on
both edges of the socket board.
Asymmetrical
joints have a pin
C
on one
edge and a socket
D
on the other edge of
each board.
B
B
C
D
PIN BOARD
PIN BOARD
SOCKET BOARD
SOCKET BOARD
C
Quick Reference
B975 Board Width Selection
A
A
D
Symmetrical Board Widths for
3⁄4
" Box Joints on Wider Boards*
Total Pins & Sockets
3
5
7
9
11
13
15
17
19
21
23
Inches
2
3/16
"
3
11/16
"
5
3/16
"
6
11/16
"
8
3/16
"
9
11/16
"
11
3/16
"
12
11/16
"
14
3/16
"
15
11/16
"
17
3/16
"
Millimeters
56
94
132
170
208
246
284
322
360
398
437
Symmetrical Board Widths for
1⁄2
" Box Joints on Wider Boards*
Total Pins & Sockets
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
Inches
1 7/16" 2 1/2" 3 1/2" 4 1/2" 5 9/16" 6 9/16" 7 5/8" 8 5/8" 9 5/8 " 10 11/16" 1111/16" 12 11/16" 13 3/4" 14 3/4" 15 3/4" 16 13/16" 17 13/16"
Millimeters
37
63
89
115
141
167
193
219
245
271
297
323
349
375
401
427
453
*Note: Wider boards are not possible when using a router table.
Symmetrical Board Widths for
3⁄4
" Box Joints
Total Pins & Sockets
3
5
7
9
11
13
Inches
2
3/16
"
3
11/16
"
5
3/16
"
6
11/16
"
8
3/16
"
9
11/16
"
Millimeters
56
94
132
170
208
246
Asymmetrical Board Widths for
1⁄2
" Box Joints
Total Pins & Sockets
4
6
8
10
12
14
16
18
Inches
1 15/16"
3"
4"
5 1/16"
6 1/16"
7 1/16"
8 1/8"
9 1/8"
Millimeters
50
76
102
128
154
180
206
232
Asymmetrical Board Widths for
3⁄4
" Box Joints
Total Pins & Sockets
4
6
8
10
12
Inches
2 15/16"
4 7/16"
5
15/16
"
7
7/16
"
8
15/16
"
Millimeters
75
113
151
189
227
Symmetrical Board Widths for
1⁄2
" Box Joints
Total Pins & Sockets
3
5
7
9
11
13
15
17
19
Inches
1 7/16"
2 1/2"
3 1/2"
4 1/2"
5 9/16"
6 9/16"
7 5/8"
8 5/8"
9 5/8 "
Millimeters
37
63
89
115
141
167
195
219
245