The O-Ring, cataloged under National Stock Number 5331-01-481-3787, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is DC Fabricators Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-481-3787 |
| Primary Part Number | CW-686ATJ |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.275 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-G-21610,TYPE I MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 49.500 INCHES NOMINAL 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 |
|---|---|
| CW-2300DFPN23-624 | DC Fabricators Inc (USA) |
| CW-686ATJ PRIMARY | DC Fabricators Inc (USA) |
NSN 5331-01-481-3787 is a O-Ring, manufactured by DC Fabricators Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-481-3787 has 2 manufacturer part numbers on file: CW-2300DFPN23-624 (DC Fabricators Inc), CW-686ATJ (DC Fabricators Inc).
Key specifications for CW-686ATJ: Cross-Sectional Height: 0.275 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-G-21610,TYPE I MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 49.500 INCHES NOMINAL 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.