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With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.
Black-oxide steel screws are mildly corrosion resistant in dry environments. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1 1/2"-12 | |||||||||||
Black-Oxide Alloy Steel | |||||||||||
3" | Fully Threaded | __ | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
3 1/2" | Fully Threaded | __ | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
4" | Fully Threaded | __ | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
4 1/2" | Fully Threaded | __ | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
5" | Partially Threaded | 3 3/4" | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
5 1/2" | Partially Threaded | 3 3/4" | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
6" | Partially Threaded | 3 3/4" | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
7" | Partially Threaded | 3 3/4" | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
8" | Partially Threaded | 3 3/4" | Fine | 2 1/4" | 1 1/2" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
These Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.
For technical drawings and 3-D models, click on a part number.
Grade 8 steel threaded rods are about 25% stronger than medium-strength steel rods.
For technical drawings and 3-D models, click on a part number.
About half the strength of medium-strength steel threaded rods, use these for light duty hanging, mounting, and fastening.
Zinc-plated steel threaded rods are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.