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About Threaded Studs and Rods
More
About Hex Head Screws and Bolts
More
Steel Heavy Hex Head Screws
for High-Pressure Applications
These Grade B7 steel screws are nearly twice as strong as our stainless steel screws for high-pressure applications. Also known as pressure bolts, they meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges. Length is measured from under the head. Screws should be used with ASTM A194 nuts.
Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Steel Hex Nuts | ||||||||||||
| Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Each | Pkg. Qty. | Pkg. | ||
Grade B7 Steel  | |||||||||||||
1 1/4"-8 | |||||||||||||
| 3" | Partially Threaded | Coarse | 2 3/4" | 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 000000 | 1 | 000000000 | 00000 |
| 3 1/4" | Partially Threaded | Coarse | 2 3/4" | 1/2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | Coarse | 2 3/4" | 3/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 3 3/4" | Partially Threaded | Coarse | 2 3/4" | 1" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | Coarse | 2 3/4" | 1 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4 1/4" | Partially Threaded | Coarse | 2 3/4" | 1 1/2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4 1/2" | Partially Threaded | Coarse | 2 3/4" | 1 3/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4 3/4" | Partially Threaded | Coarse | 2 3/4" | 2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5" | Partially Threaded | Coarse | 2 3/4" | 2 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 1/4" | Partially Threaded | Coarse | 2 3/4" | 2 1/2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 1/2" | Partially Threaded | Coarse | 2 3/4" | 2 3/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 3/4" | Partially Threaded | Coarse | 2 3/4" | 3" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6" | Partially Threaded | Coarse | 2 3/4" | 3 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6 1/4" | Partially Threaded | Coarse | 3" | 3 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6 1/2" | Partially Threaded | Coarse | 3" | 3 1/2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6 3/4" | Partially Threaded | Coarse | 3" | 3 3/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 7" | Partially Threaded | Coarse | 3" | 4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 7 1/4" | Partially Threaded | Coarse | 3" | 4 1/4" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 7 1/2" | Partially Threaded | Coarse | 3" | 4 1/2" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 8" | Partially Threaded | Coarse | 3" | 5" | 2" | 25/32" | 120,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
Medium-Strength Steel Threaded Rods—Grade B7
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.
High-Strength 410 Stainless
Steel Threaded Rods—Grade B6
Stronger and more wear resistant than 18-8 stainless steel, these 410 stainless steel threaded rods are mildly chemical resistant. They meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges. All are magnetic.
For technical drawings and 3-D models, click on a part number.
| Lg. | Tensile Strength, psi | Hardness | Specifications Met | Each | |
410 Stainless Steel | |||||
|---|---|---|---|---|---|
1 1/4"-8 | |||||
| 3ft. | 110,000 | Not Rated | ASTM A193 | 000000000 | 0000000 |