The O-Ring, cataloged under National Stock Number 5331-01-091-7778, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (CAGE 34646) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-091-7778 |
| Primary Part Number | C4007-513-ATV |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| C4007-513-ATV PRIMARY | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA) |
| C4007-513-034 | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA) |
| D-8272-1307-80B PIECE 8 | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA) |
| Reference | Meaning |
|---|---|
| C4007-513-034 | 5/9 Secondary reference Newdell Company, the Dba Ladish Valves |
NSN 5331-01-091-7778 is a O-Ring, manufactured by Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-091-7778 has 3 manufacturer part numbers on file: C4007-513-ATV (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), C4007-513-034 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), D-8272-1307-80B PIECE 8 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy).
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.