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About Socket Head Screws
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Sealing Socket Head Screws
Seal out contaminants and prevent leaks—a silicone O-ring under the head creates a water-, oil-, and chemical-resistant seal. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Dimensions meet ASME B18.3 or ISO 4762 (formerly DIN 912) specifications. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Max. Pressure, psi | O-Ring Temp. Range, °F | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Each | |
18-8 Stainless Steel | ||||||||||||
6-32 | ||||||||||||
| 1/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 00000 |
| 3/8" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
8-32 | ||||||||||||
| 3/8" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 5/8" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
10-32 | ||||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 5/8" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
1/4"-20 | ||||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 5/8" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 1,500 | -80° to 400° | 100,000 | ASME B18.3 | __ | 000000000 | 0000 |
| Pkg. | ||||||||||||
M3 × 0.5 mm | ||||||||||||
| 6mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 8mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
M4 × 0.7 mm | ||||||||||||
| 8mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 16mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
M5 × 0.8 mm | ||||||||||||
| 10mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 16mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 20mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
M6 × 1 mm | ||||||||||||
| 12mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 16mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 20mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 25mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
M8 × 1.25 mm | ||||||||||||
| 20mm | Fully Threaded | Coarse | 13mm | 8mm | 6 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |
| 25mm | Fully Threaded | Coarse | 13mm | 8mm | 6 mm | 1,500 | -80° to 400° | 100,000 | DIN 912, ISO 4762 | 5 | 000000000 | 00000 |