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Cleaned and Bagged 18-8 Stainless Steel Socket Head Screws for High Vacuum
Cleaned and double bagged in an ISO Class 5 (Fed. Std. Class 100) clean room, these screws are ready to use on chambers and components in high-vacuum systems. 18-8 stainless steel releases gas at a slower rate than other metals, allowing your system to achieve higher levels of vacuum. Screws are silver plated for lubricity, reducing wear over time. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Environmental Rating | Specifications Met | Each | |
Silver-Plated 18-8 Stainless Steel | ||||||||||
4-40 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 000000 |
| 3/4" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
6-32 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
8-32 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
10-32 | ||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 1" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | Fed. Std. Class 100, ISO Class 5 | __ | 000000000 | 00000 |
M3 × 0.5 mm | ||||||||||
| 8mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M4 × 0.7 mm | ||||||||||
| 8mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M5 × 0.8 mm | ||||||||||
| 8mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M6 × 1 mm | ||||||||||
| 8mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws
Fasten these screws inside a high-vacuum system without bringing in contaminants. They are cleaned and double-bagged in an ISO Class 5 (Fed. Std. Class 100) clean room to eliminate impurities. A vent through the center allows fluids and gases to escape, which reduces the time it takes to reach vacuum conditions. These screws are 18-8 stainless steel, which emits less gas than most metals and stands up to corrosive chemicals. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Vent Dia. | Tensile Strength, psi | Environmental Rating | Specifications Met | Each | |
18-8 Stainless Steel | |||||||||||
4-40 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 0.036" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 000000 |
| 3/4" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 0.036" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 0.036" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
6-32 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 0.04" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 0.04" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.226" | 0.138" | 7/64" | 0.04" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
8-32 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 0.042" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 0.042" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 0.27" | 0.164" | 9/64" | 0.042" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
10-32 | |||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 0.052" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 0.052" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 1" | Fully Threaded | Fine | 5/16" | 0.19" | 5/32" | 0.052" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
1/4"-20 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 0.063" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 0.063" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 3/8" | 1/4" | 3/16" | 0.063" | 70,000 | Fed. Std. Class 100, ISO Class 5 | ASME B18.3 | 000000000 | 00000 |
M3 × 0.5 mm | |||||||||||
| 8mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 5.5mm | 3mm | 2.5 mm | 1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M4 × 0.7 mm | |||||||||||
| 8mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1.1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1.1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 7mm | 4mm | 3 mm | 1.1mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M5 × 0.8 mm | |||||||||||
| 8mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1.3mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1.3mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 8.5mm | 5mm | 4 mm | 1.3mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
M6 × 1 mm | |||||||||||
| 8mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1.6mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 10mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1.6mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |
| 12mm | Fully Threaded | Coarse | 10mm | 6mm | 5 mm | 1.6mm | 70,000 | Fed. Std. Class 100, ISO Class 5 | DIN 912, ISO 4762 | 000000000 | 00000 |