The O-Ring, cataloged under National Stock Number 5331-01-050-1537, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-050-1537 |
| Primary Part Number | AS3581-239 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Center Hole Diameter | 3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN |
| Temp Rating | -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Outside Diameter | 3.887 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AS3581-239 PRIMARY | Sae International Dba Sae International (USA) |
| M83248/2-239 | Zf Industrieantriebe Witten Gmbh (DEU) |
| AS3581-239 | Society of Automotive Engineers Inc (USA) |
| M83248/2-239 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-R-83248/2 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| SAE-AS3581 | Sae International Dba Sae International (USA) |
| 600-28405 ITEM 4 | Moog Inc. Dba Ampac-Isp Corp (USA) |
| 24723 | Moog Inc. Dba Ampac-Isp Corp (USA) |
| AS568-239MILG23 652TY2 | Zf Industrieantriebe Witten Gmbh (DEU) |
| AS568-239MILG23652TY2 | Society of Automotive Engineers Inc (USA) |
| 81.11.157.41 | Zf Industrieantriebe Witten Gmbh (DEU) |
NSN 5331-01-050-1537 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-050-1537 has 11 cross-referenced part numbers: AS3581-239 (Sae International Dba Sae International), M83248/2-239 (Zf Industrieantriebe Witten Gmbh), AS3581-239 (Society of Automotive Engineers Inc), M83248/2-239 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-83248/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.
There are 3 known substitutes for 5331-01-050-1537: 3110-00-100-3590, 6210-01-054-1692, 5985-01-356-1043. Verify interchangeability with system specifications before substitution.
Key specifications for AS3581-239: Material: RUBBER FLUOROCARBON CLASS FPM; Center Hole Diameter: 3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN; Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Outside Diameter: 3.887 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.