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About Socket Head Screws
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High-Temperature Alloy Steel Socket Head Screws—Grade B7
Fully Threaded
These screws are specially tempered to meet ASTM A193 specifications for temperatures up to 1100° F. They can be used in high-pressure applications. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing  | Dia. | Ht. | Drive Size | Max. Temp., °F | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Alloy Steel | |||||||||||
10-32 | |||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 3/16" | 5/32" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 000000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 3/16" | 5/32" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 1" | Fully Threaded | Fine | 5/16" | 3/16" | 5/32" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
1/4"-20 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
5/16"-18 | |||||||||||
| 3/4" | Fully Threaded | Coarse | 1/2" | 5/16" | 1/4" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 1/2" | 5/16" | 1/4" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
3/8"-16 | |||||||||||
| 1" | Fully Threaded | Coarse | 9/16" | 3/8" | 5/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 9/16" | 3/8" | 5/16" | 1100° | 125,000 | ASTM A193 | 5 | 000000000 | 00000 |