The O-Ring, cataloged under National Stock Number 5331-01-456-4407, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-456-4407 |
| Primary Part Number | 243-6758311 FIND MSAS-A36 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-G-21610 TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 29.731 INCHES MINIMUM AND 29.981 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 243-6758311 FIND MSAS-A36 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 211075841 | 5/9 Secondary reference U.S. Government activity |
| 26M01-5412 ITEM 16 | 5/9 Secondary reference U.S. Government activity |
| 211075841 | 5/9 Secondary reference Naval Sea Systems Command |
| 243-6758311-MSAS-A36 | 5/9 Secondary reference Naval Sea Systems Command |
| 6758311 FIND MSAS-A36 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5331-01-456-4407 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-456-4407 has 1 manufacturer part number on file: 243-6758311 FIND MSAS-A36 (Naval Sea Systems Command).
Key specifications for 243-6758311 FIND MSAS-A36: Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Material Document and Classification: MIL-G-21610 TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 29.731 INCHES MINIMUM AND 29.981 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 4 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.