The O-Ring, cataloged under National Stock Number 5331-01-178-1771, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bsi Standards Limited. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Bsi Standards Limited (CAGE K7766) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-178-1771 |
| Primary Part Number | BS1806-032 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bsi Standards Limited |
| 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 |
|---|---|
| BS1806-032 | Bsi Standards Limited (GBR) |
| Reference | Meaning |
|---|---|
| BS1806-032 | C/1 Advisory reference — outside the item-of-supply concept Textron Ground Support Equipment Uk Limited Div Aircraft Handling and Airport Equipment |
| BS1806-032 | 3/9 Design control — primary reference M L Aviation Ltd (incorporating M L Wallop Defence Systems Ltd) |
NSN 5331-01-178-1771 is a O-Ring, manufactured by Bsi Standards Limited, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-178-1771 has 1 manufacturer part number on file: BS1806-032 (Bsi Standards Limited).
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.