Bay Bolt

Screws

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Everything in Fasteners
 
Serving the Manufacturing, Construction and Water Works Industries since 1981.

Machine Screws
Slotted / Phillips Head
Round Head
Flat Head
Pan Head

Self Drilling Screws
TEK Type
Hex Washer Head
Sealing Washers

Sheet Metal Screws
Type A/AB Point
Flat Head
Pan Head
Hex Washer Head

Drywall & Wood Screws
Bugle Head
Flat Head
Decking

Decimal and Millimeter Equivalents

Decimals
Millimeters
Decimals
Millimeters
1/64
0.015625
0.397
17/32
.53125
13.494
1/32
.03125
0.1794
35/64
.546875
13.891
3/64
.046875
1.191
9/16
.5625
14.288
1/16
.0625
1.588
37/64
.578125
14.684
5/64
.078125
1.984
19/32
.59375
15.478
3/32
.09375
2.381
39/64
.509375
15.478
7/64
.109375
2.778
5/8
.6250
15.875
1/8
.1250
3.175
41/64
.640625
16.272
9/64
.140625
3.572
21/32
.65625
16.669
5/32
.15625
3.969
43/64
.671875
17.066
11/64
.171875
4.366
11/18
.6875
17.463
3/16
.1875
4.763
45/64
.703125
17.859
13/64
.203125
5.159
23/32
.71875
18.256
7/32
.21875
5.556
47/64
.73375
18.653
15/64
.234375
5.953
3/4
.7500
19.050
1/4
.2500
6.350
49/64
.765625
19.477
17/64
.265625
6.747
25/32
.78125
19.844
9/32
.28125
7.144
51/64
.796875
20.241
19/64
.296875
7.541
13/16
.8125
20.638
5/16
.3125
7.938
53/64
.828125
21.034
21/64
.328125
8.334
27/34
.84375
21.431
11/32
.34375
8.731
55/64
.859375
21.828
23/64
.359375
9.128
7/8
.8750
22.225
3/8
.3750
9.525
57/64
.890625
22.622
25/64
.390625
9.922
29/64
.90625
23.019
13/32
.40625
10.319
59/64
.921875
23.416
27/64
.421875
10.716
15/16
.9375
23.813
7/16
.4375
11.113
61/64
.953125
24.606
29/64
.453125
11.509
31/32
.96875
24.606
15/32
.46875
11.906
63/64
.984375
25.003
31/64
.484375
12.303
1
1.000
25.400
1/2
.5000
12.700
One mm = .03937
33/64
.515625
13.097

Threads Per Inch

Size
Coarse UNC
Fine UNF
Basic Major Diameter
0
64
80
.0600
1
64
72
.0730
2
58
64
.0860
3
48
56
.0990
4
40
48
.1120
5
40
44
.1250
6
32
40
.1380
8
32
36
.1640
10
24
32
.1900
12
24
28
.2160
1/4
20
28
.2500
5/16
18
24
.3750
3/8
16
24
.3125
7/16
14
20
.4375
1/2
13
20
.5000
9/16
12
18
.5625
5/8
11
18
.6250
3/4
10
16
.7500
7/8
9
14
.8750
1
8
14
1.000
1 1/8
7
12
1.125
1 1/4
7
12
1.250
1 3/8
6
12
1.500
1 1/2
6
12
1.500
1 5/8
5 1/2
-
1.625
1 3/4
5
12
1.750
1 7/8
5
-
1.875
2
4 1/2
12
2.00
2 1/4
4 1/2
-
2.250
2 1/2
4
-
2.500
2 3/4
4
-
2.750
3
4
-
3.000
3 1/4
4
-
3.250
3 1/2
4
-
3.500
3 3/4
4
-
3.750
4
4
-
4.000

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4610 Malat Street, Oakland, CA 94601-4904
Phone (510) 532-1188 (800) 242-BOLT (2658) Fax (510) 532-3947
Info@BayBolt.com

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