The O-Ring, cataloged under National Stock Number 5331-01-283-0518, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-283-0518 |
| Primary Part Number | ST1946-016 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Center Hole Diameter | 0.605 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| M83485/1-016 | Society of Automotive Engineers Inc (USA) |
| V0835 2-016 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AMS-R-83485/1 | Society of Automotive Engineers Inc (USA) |
| 10444077 | Nimikkeistokeskus Ncb Finland (FIN) |
| ST1946-016 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 5331PL0658520 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 5331PL2028308 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| ST1946-016 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| M83485/1-016 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| M83485/1-016 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| ST1946-016 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| AMC-R-83485 | Society of Automotive Engineers Inc (USA) |
| ST1946-016 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 2-016 V0835-75 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| ST1946-016 | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| AMS-R-83485 | Society of Automotive Engineers Inc (USA) |
| MIL-R-83485 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5331-01-283-0518 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-283-0518 has 17 cross-referenced part numbers: M83485/1-016 (Society of Automotive Engineers Inc), V0835 2-016 (Parker-Hannifin Corp Div O-Ring Division), AMS-R-83485/1 (Society of Automotive Engineers Inc), 10444077 (Nimikkeistokeskus Ncb Finland), ST1946-016 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney) and 12 more.
There are 12 known substitutes for 5331-01-283-0518: 5331-01-143-5059, 5331-01-272-7464, 5331-01-318-9115 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for ST1946-016: Center Hole Diameter: 0.605 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. 3 total characteristics are documented in the Federal Logistics Information System.