The Felt,mechanical,preformed, cataloged under National Stock Number 5330-01-171-0335, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-171-0335 |
| Primary Part Number | 7-311310240-5 |
| Item Name | Felt,mechanical,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Style Designator | CIRCULAR |
| Material Document and Classification | C-F-206, TYPE 2, CLASS 265-1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | CIRCULAR WITH CENTER APERTURE |
| Outside Diameter | 2.625 INCHES NOMINAL IN |
| Aperture Diameter | 2.000 INCHES NOMINAL IN |
| Material | WOOL 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 |
|---|---|
| 7-311310240-5 PRIMARY | The Boeing Company (USA) |
| 7-311310240-5 PRIMARY | Acme Industries Inc (USA) |
| 7-311310240-5 | SAS Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 7-311310240-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5330-01-171-0335 is a Felt,mechanical,preformed, manufactured by The Boeing Company, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-171-0335 has 3 manufacturer part numbers on file: 7-311310240-5 (The Boeing Company), 7-311310240-5 (Acme Industries Inc), 7-311310240-5 (SAS Industries Inc).
Key specifications for 7-311310240-5: Style Designator: CIRCULAR; Material Document and Classification: C-F-206, TYPE 2, CLASS 265-1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: CIRCULAR WITH CENTER APERTURE; Outside Diameter: 2.625 INCHES NOMINAL IN. 6 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.