The O-Ring, cataloged under National Stock Number 5331-01-413-8509, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kenco International Inc Dba Kenco Engineering. Government technical data includes 1 specification, 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 | 5331-01-413-8509 |
| Primary Part Number | A-5561 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Kenco International Inc Dba Kenco Engineering |
| Status | ACTIVE |
| 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 |
|---|---|
| A-5561 PRIMARY | Kenco International Inc Dba Kenco Engineering (USA) |
| A-20039 ITEM 7 | Kenco International Inc Dba Kenco Engineering (USA) |
NSN 5331-01-413-8509 is a O-Ring, manufactured by Kenco International Inc Dba Kenco Engineering, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-413-8509 has 2 manufacturer part numbers on file: A-5561 (Kenco International Inc Dba Kenco Engineering), A-20039 ITEM 7 (Kenco International Inc Dba Kenco Engineering).
Key specifications for A-5561: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.