The O-Ring, cataloged under National Stock Number 5331-01-264-5923, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-264-5923 |
| Primary Part Number | C321-606 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| C321-606 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division (USA) |
| Reference | Meaning |
|---|---|
| C321-606 | 5/9 Secondary reference Ingersoll-Rand Co Power Tool Div |
| C321-606 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| C321-606 | 5/9 Secondary reference Ingersoll-Rand Co Tool Group Headquarters |
| C321-606 | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
NSN 5331-01-264-5923 is a O-Ring, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-264-5923 has 1 manufacturer part number on file: C321-606 (Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division).
Key specifications for C321-606: End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; POWHATAN CLASS T-ATF 166; BOB HOPE CLASS T-AKR 300; AVENGER CLASS MCM; SAFEGUARD CLASS ARS; WASP CLASS LHD; FORRESTAL CLASS CV; NIMITZ CLASS CVN; Material: RUBBER SYNTHETIC. 1 specification is 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.