Hex Tap Bolts
Also known as fully-threaded Hex Cap Screws, these bolts have a variety of uses for construction, agriculture and automotive applications. We carry a complete line of grade 2, 5 and 8, coarse thread Tap Bolts. Fine thread available on request. Available in plain and zinc finishes. Stocked in diameters from 1/4" to 2" and a full range of lengths.
Group codes represented: FTTB, FTTB5, FTTB8
Part# examples: 50U250FTTB5, 62U350FTTB8
Nominal or Basic Product Diameter |
F |
G |
H |
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WIDTH ACROSS FLATS |
WIDTH ACROSS CORNERS |
HEAD HEIGHT |
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BASIC |
MAX |
MIN |
MAX |
MIN |
BASIC |
MAX |
MIN |
|
1/4 |
7/16 |
0.438 |
0.428 |
0.505 |
0.488 |
5/32 |
0.163 |
0.15 |
5/16 |
1/2 |
0.5 |
0.489 |
0.577 |
0.557 |
13/64 |
0.211 |
0.195 |
3/8 |
9/16 |
0.562 |
0.551 |
0.65 |
0.628 |
15/64 |
0.243 |
0.226 |
7/16 |
8-May |
0.625 |
0.612 |
0.722 |
0.698 |
9/32 |
0.291 |
0.272 |
1/2 |
3/4 |
0.75 |
0.736 |
0.866 |
0.84 |
5/16 |
0.323 |
0.302 |
5/8 |
15/16 |
0.938 |
0.922 |
1.083 |
1.051 |
25/64 |
0.403 |
0.378 |
3/4 |
1-1/8 |
1.125 |
1.1 |
1.299 |
1.254 |
15/32 |
0.483 |
0.455 |
| Tolerance on Length | Nominal Screw Size |
Nominal Size |
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Up to 1in., incl. |
Over 1 in. to 2-2 1/2 in., incl. |
Over 2-1/2 in. to 4 in., incl. |
Over 4 in. to 6 in., incl. |
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1/4 to 3/8 |
-0.03 |
-0.04 |
-0.06 |
-0.1 |
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7/16 and 1/2 |
-0.03 |
-0.06 |
-0.08 |
-0.1 |
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9/16 to 3/4 |
-0.03 |
-0.08 |
-0.1 |
-0.1 |
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