The O-Ring, cataloged under National Stock Number 5331-01-539-1604, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-539-1604 |
| Primary Part Number | AMS 7276-237 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | -5.0 SHORE DUROMETER A MINIMUM AND 10.0 SHORE DUROMETER A MAXIMUM |
| Specification/standard Data | 81343 -SAE AMS 7276F PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Center Hole Diameter | 3.335 INCHES MINIMUM AND 3.383 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| AMS 7276-237 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AMS 7276-237 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-539-1604 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-539-1604 has 1 manufacturer part number on file: AMS 7276-237 (Sae International Dba Sae International).
Key specifications for AMS 7276-237: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: -5.0 SHORE DUROMETER A MINIMUM AND 10.0 SHORE DUROMETER A MAXIMUM; Specification/standard Data: 81343 -SAE AMS 7276F PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION; Center Hole Diameter: 3.335 INCHES MINIMUM AND 3.383 INCHES MAXIMUM IN. 5 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.