The O-Ring, cataloged under National Stock Number 5331-01-482-7989, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is D. W. Industries, Inc. Dba Dw Ind. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-482-7989 |
| Primary Part Number | F4001-20 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | D. W. Industries, Inc. Dba Dw Ind |
| Status | ACTIVE |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Material Document and Classification | ASTM D2000 ASSN STD SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 1.140 INCHES NOMINAL 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 | X |
| Part Number | Manufacturer |
|---|---|
| F4001-20 PRIMARY | D. W. Industries, Inc. Dba Dw Ind (USA) |
| Reference | Meaning |
|---|---|
| F4001-20 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12421890 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5331-01-482-7989 is a O-Ring, manufactured by D. W. Industries, Inc. Dba Dw Ind, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-482-7989 has 1 manufacturer part number on file: F4001-20 (D. W. Industries, Inc. Dba Dw Ind).
Key specifications for F4001-20: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Material Document and Classification: ASTM D2000 ASSN STD SINGLE MATERIAL RESPONSE; Center Hole Diameter: 1.140 INCHES NOMINAL IN; End Item Identification: NSN 2320-01-354-3382. 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.