The O-Ring, cataloged under National Stock Number 5331-00-757-8642, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Cp Industries Holdings, Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-757-8642 |
| Primary Part Number | 2MP3801-5 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Cp Industries Holdings, Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.188 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2MP3801-5 PRIMARY | Cp Industries Holdings, Inc (USA) |
| Reference | Meaning |
|---|---|
| 2MP2582 | 5/9 Secondary reference United States Steel Corporation |
| 2MP2582 | 5/9 Secondary reference U.S. Government activity |
| 4X15940 MK 5 | C/1 Advisory reference — outside the item-of-supply concept Cp Industries Holdings, Inc |
NSN 5331-00-757-8642 is a O-Ring, manufactured by Cp Industries Holdings, Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-757-8642 has 1 manufacturer part number on file: 2MP3801-5 (Cp Industries Holdings, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-398-9854. Verify interchangeability with system specifications before substitution.
Key specifications for 2MP3801-5: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 1.188 INCHES NOMINAL IN. 2 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.