ASTM F880-F880M

This specification covers chemical, mechanical requirements for austenitic grade stainless steel socket set screws (SSS) for imperial sizes between 0.060 through 0.500 inch in two alloy condition, AF and CW. ASTM F880M is a metric companion to this specification cover the same products in metric size from M1.6 to M12. These stainless steel socket set screws are intended for use in applications where general corrosion resistance is required. BoltPort manufactures Socket Set Screws as per ASTM F880 under grades 303 primarily. All products are duly tested for chemical, mechanical requirements, threads and dimensions and supplied with EN 10204 Type 3.1 Certification.

ASTM F880 Chemical Composition

UNS Designation	Alloy	Carbon	Manganese	Phosphorus	Sulfur	Silicon	Chromium	Nickel	Copper	Molybdenum
S30300	303^A	0.15	2.00	0.2	0.15 min	1	17.0 - 19.0	8.0 - 10.0	--	0.60 max^A

^A At the manufacturer's option, determined only when intentionally added.

ASTM F880 Torsional Strength Requirements

Nominal Screw Size		Shortest Nominal Screw Lengths Subject to Torque			Test Torque, in-lb, min
Nominal Screw Size		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