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Stainless Steel Socket Head Screws
 |  |
Fully Threaded | Partially Threaded |
These screws won't rust or corrode when exposed to moisture and chemicals. Their deep, six-point socket keeps hex keys from slipping out and damaging the drive.
Length is measured from under the head.
Silver-Plated 18-8 Stainless Steel—The silver plating helps these screws thread on smoothly during installation. They also won't rust in wet and outdoor environments.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Silver-Plated 18-8 Stainless Steel | ||||||||||
2-56 | ||||||||||
| 1/8" | 0.14" | 0.086" | Fully Threaded | Coarse | 70,000 | 5 | 90008A221 | 00000 | ||
| 3/16" | 0.14" | 0.086" | Fully Threaded | Coarse | 70,000 | 5 | 90008A231 | 0000 | ||
| 1/4" | 0.14" | 0.086" | Fully Threaded | Coarse | 70,000 | 5 | 90008A241 | 0000 | ||
| 3/8" | 0.14" | 0.086" | Fully Threaded | Coarse | 70,000 | 5 | 90008A251 | 0000 | ||
| 1/2" | 0.14" | 0.086" | Fully Threaded | Coarse | 70,000 | 5 | 90008A261 | 0000 | ||
4-40 | ||||||||||
| 1/4" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | 5 | 90008A421 | 0000 | ||
| 3/8" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | 5 | 90008A431 | 0000 | ||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | 5 | 90008A441 | 0000 | ||
| 5/8" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | 5 | 90008A451 | 00000 | ||
| 3/4" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | 5 | 90008A461 | 0000 | ||
6-32 | ||||||||||
| 1/4" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | 5 | 90008A621 | 0000 | ||
| 3/8" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | 5 | 90008A631 | 0000 | ||
| 1/2" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | 5 | 90008A641 | 0000 | ||
| 5/8" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | 5 | 90008A651 | 0000 | ||
| 3/4" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | 5 | 90008A661 | 0000 | ||
| 1" | 0.226" | 0.138" | Partially Threaded | Coarse | 70,000 | 5 | 90008A671 | 0000 | ||
8-32 | ||||||||||
| 3/8" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 5 | 90008A821 | 0000 | ||
| 1/2" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 5 | 90008A831 | 0000 | ||
| 5/8" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 5 | 90008A841 | 00000 | ||
| 3/4" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 5 | 90008A851 | 00000 | ||
| 1" | 0.27" | 0.164" | Partially Threaded | Coarse | 70,000 | 5 | 90008A861 | 00000 | ||
10-24 | ||||||||||
| 1/2" | 5/16" | 0.19" | Fully Threaded | Coarse | 70,000 | 5 | 90008A321 | 00000 | ||
| 3/4" | 5/16" | 0.19" | Fully Threaded | Coarse | 70,000 | 5 | 90008A331 | 00000 | ||
| 1" | 5/16" | 0.19" | Partially Threaded | Coarse | 70,000 | 5 | 90008A341 | 00000 | ||
10-32 | ||||||||||
| 3/8" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 5 | 90008A521 | 0000 | ||
| 1/2" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 5 | 90008A531 | 00000 | ||
| 5/8" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 5 | 90008A541 | 00000 | ||
| 3/4" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 5 | 90008A551 | 00000 | ||
| 1" | 5/16" | 0.19" | Partially Threaded | Fine | 70,000 | 5 | 90008A561 | 00000 | ||
1/4"-20 | ||||||||||
| 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 5 | 90008A711 | 00000 | ||
| 5/8" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 5 | 90008A721 | 00000 | ||
| 3/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 5 | 90008A731 | 00000 | ||
| 1" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 5 | 90008A741 | 00000 | ||
| 1 1/4" | 3/8" | 1/4" | Partially Threaded | Coarse | 70,000 | 5 | 90008A751 | 00000 | ||
| 1 1/2" | 3/8" | 1/4" | Partially Threaded | Coarse | 70,000 | 5 | 90008A761 | 00000 | ||
Cleaned and Bagged Socket Head Screws for High Vacuum
 |
Install these screws in high-vacuum systems where even a small amount of contamination could affect performance. These are cleaned and double-bagged in an ISO Class 5 (Fed. Std. Class 100) clean room. The deep, six-point socket keeps hex keys from slipping out and damaging the drive.
Length is measured from under the head.
Silver-Plated 18-8 Stainless Steel—18-8 stainless steel screws release gas at a slower rate than other metal screws, so your system can reach higher levels of vacuum. The silver plating helps the screw slide smoothly when tightening or loosening it in the mounting surface.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Clean Room Std. | Each | |||
Silver-Plated 18-8 Stainless Steel | ||||||||||
4-40 | ||||||||||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A110 | 000000 | ||
| 3/4" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A160 | 00000 | ||
| 1" | 0.183" | 0.112" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A210 | 00000 | ||
6-32 | ||||||||||
| 1/2" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A120 | 00000 | ||
| 3/4" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A170 | 00000 | ||
| 1" | 0.226" | 0.138" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A220 | 00000 | ||
8-32 | ||||||||||
| 1/2" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A130 | 00000 | ||
| 3/4" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A180 | 00000 | ||
| 1" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A230 | 00000 | ||
10-32 | ||||||||||
| 1/2" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A140 | 00000 | ||
| 3/4" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A190 | 00000 | ||
| 1" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A240 | 00000 | ||
1/4"-20 | ||||||||||
| 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A150 | 00000 | ||
| 3/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A200 | 00000 | ||
| 1" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A250 | 00000 | ||
M3 × 0.5 mm | ||||||||||
| 8 mm | 5.5 mm | 3 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A260 | 00000 | ||
| 10 mm | 5.5 mm | 3 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A300 | 00000 | ||
| 12 mm | 5.5 mm | 3 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A340 | 00000 | ||
M4 × 0.7 mm | ||||||||||
| 8 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A270 | 00000 | ||
| 10 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A310 | 00000 | ||
| 12 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A350 | 00000 | ||
M5 × 0.8 mm | ||||||||||
| 8 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A280 | 00000 | ||
| 10 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A320 | 00000 | ||
| 12 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A360 | 00000 | ||
M6 × 1 mm | ||||||||||
| 8 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A290 | 00000 | ||
| 10 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A330 | 00000 | ||
| 12 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 70,000 | Fed. Std. Class 100, ISO Class 5 | 90843A370 | 00000 | ||
