The O-Ring Set, cataloged under National Stock Number 5331-01-662-5866, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Waterous Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-662-5866 |
| Primary Part Number | K1158 |
| Item Name | O-Ring Set |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Waterous Company |
| Status | ACTIVE |
| Supply Items and Quantities | ORING 4.88X.25,NBR,70,PN: 4260808,QTY: 1 EA;ORING M16.4X4M.4,HNBR,90,PN: 4260806,QTY: 2 EA;O-RING,PN: 1HB622,QTY: 3 EA;ORING 6.75X.38,NBR,70,PN: 4260782,QTY: 1 EA;ORING 10.50X.38,NBR,70,PN: 4260780,QTY: 1 EA;ORING .50X.12,NBR,70,PN: 4260818,QTY: 1 EA |
| 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 |
|---|---|
| K1158 PRIMARY | Waterous Company (USA) |
| Reference | Meaning |
|---|---|
| 4260804 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5331-01-662-5866 is a O-Ring Set, manufactured by Waterous Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-662-5866 has 1 manufacturer part number on file: K1158 (Waterous Company).
Key specifications for K1158: Supply Items and Quantities: ORING 4.88X.25,NBR,70,PN: 4260808,QTY: 1 EA;ORING M16.4X4M.4,HNBR,90,PN: 4260806,QTY: 2 EA;O-RING,PN: 1HB622,QTY: 3 EA;ORING 6.75X.38,NBR,70,PN: 4260782,QTY: 1 EA;ORING 10.50X.38,NBR,70,PN: 4260780,QTY: 1 EA;ORING .50X.12,NBR,70,PN: 4260818,QTY: 1 EA; Part Name Assigned by Controlling Agency: ORING,KIT,XMSN; End Item Identification: 4210-01-622-0440;TRUCK,FIRE FIGHTING. 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.