The O-Ring, cataloged under National Stock Number 5331-01-317-3870, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-317-3870 |
| Primary Part Number | AS3578-278 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Peripheral Diameter | 12.262 INCHES NOMINAL IN |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Center Hole Diameter | 11.918 INCHES MINIMUM AND 12.050 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 200 MAXIMUM |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZW |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS9021-278 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| AMS7271 | Society of Automotive Engineers Inc (USA) |
| 938A813-140 | Fluor Marine Propulsion, Llc (USA) |
| AMS7271 | Sae International Dba Sae International (USA) |
| AS3578-278 PRIMARY | Sae International Dba Sae International (USA) |
| SAE-AS3578 | Sae International Dba Sae International (USA) |
| AS3578-278 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-317-3870 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-317-3870 has 7 cross-referenced part numbers: MS9021-278 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AMS7271 (Society of Automotive Engineers Inc), 938A813-140 (Fluor Marine Propulsion, Llc), AMS7271 (Sae International Dba Sae International), AS3578-278 (Sae International Dba Sae International) and 2 more.
There are 11 known substitutes for 5331-01-317-3870: 5331-00-064-4354, 5331-00-104-7959, 5331-00-515-6331 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for AS3578-278: Peripheral Diameter: 12.262 INCHES NOMINAL IN; Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS; Center Hole Diameter: 11.918 INCHES MINIMUM AND 12.050 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 8 total characteristics are documented in the Federal Logistics Information System.