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ASTM F880 Stainless Steel Socket Set Screws – Imperial & Metric Sizes
At Adfast Components, we supply high-quality stainless steel socket set screws conforming to ASTM F880 specifications. This standard defines the chemical and mechanical requirements for austenitic stainless steel socket set screws in imperial sizes ranging from 0.060 to 0.500 inches, available in AF (Annealed Finish) and CW (Cold Worked) conditions.
For metric sizes, ASTM F880M serves as the companion standard, covering sizes from M1.6 to M12. These fasteners are suitable for applications requiring general corrosion resistance and high reliability.
Adfast Components manufactures these socket set screws in various grades, including 303, 304, 304L, 316, and 316L, ensuring compliance with all chemical, mechanical, dimensional, and threading requirements. Every product is supplied with EN 10204 Type 3.1 certification, ensuring traceability and quality assurance.
| Composition, & maximum except as shown | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| UNS Designation | Alloy | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Copper | Molybdenum |
| Austenitic Alloys | ||||||||||
| S30300 | 303A | 0.15 | 2.00 | 0.2 | 0.15 min | 1 | 17.0 – 19.0 | 8.0 – 10.0 | — | 0.60 maxA |
| S30323 | 303se | 0.15 | 2.00 | 0.2 | 0.06 | 1 | 17.0 – 19.0 | 8.0 – 10.0 | — | Se 0.15 min |
| S30400 | 304 | 0.08 | 2.00 | 0.045 | 0.03 | 1 | 18.0 – 20.0 | 8.0 – 10.5 | 1.00 | — |
| A30403 | 304L | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 18.0 – 20.0 | 8.0 – 12.0 | 1.00 | — |
| S30500 | 305 | 0.12 | 2.00 | 0.045 | 0.03 | 1 | 17.0 – 19.0 | 10.5 – 13.0 | 1.00 | — |
| S38400 | 384 | 0.08 | 2.00 | 0.045 | 0.030 | 1 | 15.0 – 17.0 | 17.0 – 19.0 | — | — |
| S20300 | XM1A | 0.08 | 5.00 to 6.50 | 0.400 | 0.18 to 0.35 | 1 | 16.0 – 18.0 | 5.0 – 6.5 | 1.75 – 2.25 | 0.50 maxA |
| S30430 | 18-9LW | 0.10 | 2.00 | 0.045 | 0.030 | 1 | 17.0 – 19.0 | 8.0 – 10.0 | 3.0 – 4.0 | — |
| S30433 | 302HQ | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 17.0 – 19.0 | 8.0 – 10.0 | 3.0 – 4.0 | — |
| S31600 | 316 | 0.08 | 2.00 | 0.045 | 0.030 | 1 | 16.0 – 18.0 | 10.0 – 14.0 | — | 2.0 – 3.0 |
| S31603 | 316 L | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 16.0 – 18.0 | 10.0 – 14.0 | — | 2.0 – 3.0 |
A At the manufacturer’s option, determined only when intentionally added.
| Nominal Screw Size | Shortest Nominal Screw Lengths Subject to Torque | Test Torque, in-lb, min | ||||
|---|---|---|---|---|---|---|
| Cup and Flat Points, mm | Cone and Oval Points | Half Dog Points, mm | AF | CW | ||
| 0 | 0.060 | 0.109 | 0.125 | 0.109 | 0.3 | 0.6 |
| 1 | 0.073 | 0.125 | 0.141 | 0.125 | 0.7 | 1.2 |
| 2 | 0.086 | 0.125 | 0.141 | 0.141 | 0.7 | 1.2 |
| 3 | 0.099 | 0.141 | 0.156 | 0.156 | 1.6 | 3.3 |
| 4 | 0.112 | 0.141 | 0.172 | 0.156 | 1.6 | 3.3 |
| 5 | 0.125 | 0.188 | 0.188 | 0.172 | 3 | 5 |
| 6 | 0.138 | 0.172 | 0.203 | 0.188 | 3 | 5 |
| 8 | 0.164 | 0.188 | 0.219 | 0.203 | 9 | 16 |
| 10 | 0.190 | 0.188 | 0.25 | 0.234 | 16 | 26 |
| 1/4″ | 0.250 | 0.250 | 0.312 | 0.297 | 40 | 67 |
| 5/16″ | 0.312 | 0.312 | 0.391 | 0.359 | 79 | 135 |
| 3/8″ | 0.375 | 0.375 | 0.438 | 0.438 | 135 | 237 |
| 7/16″ | 0.437 | 0.438 | 0.547 | 0.484 | 220 | 378 |
| 1/2″ | 0.5 | 0.5 | 0.609 | 0.547 | 358 | 600 |