The O-Ring, cataloged under National Stock Number 5331-00-571-6539, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-571-6539 |
| Primary Part Number | 8347819 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.728 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN |
| Material | RUBBER |
| 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 |
|---|---|
| 8347819 | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| N1239-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| N1239-70 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 8347819 | Lydall Inc Elastomer Products Group (USA) |
| 8347819 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 8347819 | Parco, Llc (USA) |
| 8347819 | Federal-Mogul Corp Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 8347819 | 5/2 Secondary reference U.S. Government activity |
| 8347819 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| 8347819 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-00-571-6539 is a O-Ring, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-571-6539 has 7 manufacturer part numbers on file: 8347819 (Acushnet Rubber Company, Inc. Dba Precix), N1239-70 (Parker-Hannifin Corp Div O-Ring Division), N1239-70 (Parker Hannifin Corporation Div O-Ring Division), 8347819 (Lydall Inc Elastomer Products Group), 8347819 (U S Army Tank Automotive Command Amsta-Im-Mm) and 2 more.
Key specifications for 8347819: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 0.728 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN; Material: RUBBER. 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.