The O-Ring, cataloged under National Stock Number 5331-01-081-3142, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-081-3142 |
| Primary Part Number | 1PS138 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Center Hole Diameter | 7.957 INCHES MINIMUM AND 8.017 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND RUBBER SILICONE CLASS Q |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1PS138 | Oshkosh Defense Llc (USA) |
| G1402171A | Thales Nederland, Huizen (NLD) |
| 339076 | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
| N1000 2-171 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| G140 2171A | 5/9 Secondary reference Thales Optronics B.v. |
| AS568-171 | 3/9 Design control — primary reference U.S. Government activity |
| 2-171N1000-70 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| D2000-M3CH714A25B34E016 | 5/9 Secondary reference U.S. Government activity |
| 1PS138 | 5/9 Secondary reference Oshkosh Corp |
| 2-171N674-70 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-01-081-3142 is a O-Ring, manufactured by Oshkosh Defense Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-081-3142 has 4 manufacturer part numbers on file: 1PS138 (Oshkosh Defense Llc), G1402171A (Thales Nederland, Huizen), 339076 (Northrop Grumman Corp Electronic Systems Defensive System Div), N1000 2-171 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for 1PS138: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 7.957 INCHES MINIMUM AND 8.017 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND RUBBER SILICONE CLASS Q. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.