The Gasket, cataloged under National Stock Number 5330-01-631-4081, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 3 specifications, 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 | 5330-01-631-4081 |
| Primary Part Number | NMM210187 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Style Designator | NON-CIRCULAR |
| Bolt Hole Quantity | 14 |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| NMM210187 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| NMM220180 REV B FIND NO. 10 | Bird-Johnson Propeller Company, Llc (USA) |
NSN 5330-01-631-4081 is a Gasket, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-631-4081 has 2 manufacturer part numbers on file: NMM210187 (Bird-Johnson Propeller Company, Llc), NMM220180 REV B FIND NO. 10 (Bird-Johnson Propeller Company, Llc).
Key specifications for NMM210187: Style Designator: NON-CIRCULAR; Bolt Hole Quantity: 14; End Item Identification: TAIL BEARING COOLING SYSTEM; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.