Holding Industry Together

Units 5 & 6 Pinecopse Industrial Estate, Pine Ridge Farm, Nine Mile Ride,

Wokingham, Berks. RG40 3ND

Orders & Enquiries, simply call:   +44(0)1344 777189     Fax:  +44(0)1344 779038

Email : sales@targetfastenings.com

Unit conversion and data
THREAD
SIZE
PITCH
UNC
PITCH
UNF
Hex  Flat
Hex
Corners
Head
Height
Bolt T.L
No.4
40
48
0.187
0.216
0.06
0.474
No.5
40
44
0.188
0.217
0.07
0.5
No.6
32
40
0.25
0.289
0.093
0.526
No.8
32
36
0.25
0.289
0.11
0.578
No.10
24
32
0.312
0.36
0.12
0.63
1/4
20
28
0.437
0.505
0.163
0.75
5/16
18
24
0.5
0.577
0.211
0.875
3/8
16
24
0.562
0.65
0.243
1
7/16
14
20
0.625
0.722
0.291
1.125
1/2
13
20
0.75
0.866
0.323
1.25
9/16
11
18
0.812
0.938
0.371
1.375
5/8
11
18
0.937
1.083
0.403
1.5
3/4
10
16
1.125
1.3
0.483
1.75
7/8
9
14
1.312
1.515
0.563
2
1
8
12
1.5
1.732
0.627
2.25
1 1/8
7
12
1.687
1.948
0.718
2.5
1 1/4
7
12
1.875
2.165
0.813
2.75
1 3/8
6
12
2.062
2.382
0.878
3
1 1/2
6
12
2.25
2.598
0.974
3.25
1 3/4
5
12
2.625
3.031
1.134
3.75
2
4.5
12
3
3.464
1.263
4.25
2 1/2
4
12
3.75
4.33
1.583
5.25
3
4
12
4.5
5.196
1.935
6.25
3 1/2
4
12
5.25
6.062
2.193
6.75
4
4
12
6
6.928
2.576
8.25

                            actual         nom             max                max              max             min


Hex Head Bolts and Setscrews UNC/UNF BS1768
Lengths 5’’ to 8’’ add 1/4’’ to T.L,  and exceeding 8’’ add 3/4’’ to T.L
These dimensions are
For guidance only