The Spacer,tapered, cataloged under National Stock Number 5365-01-299-8329, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 6 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-299-8329 |
| Primary Part Number | SS81-178-I |
| Item Name | Spacer,tapered |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | TT-P-1757 FED SPEC 1ST TREATMENT RESPONSE OR MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE |
| Cross-Sectional Height | 0.050 INCHES NOMINAL IN |
| Minor Height | 0.010 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/9,T7351 OR T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/12,T7351 OR T651,T7351 OR T651 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | CHROMATE ZINC OR PLASTIC POLYAMIDE |
| Material | ALUMINUM ALLOY 7075 |
| 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 |
|---|---|
| SS81-178-I PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5365-01-299-8329 is a Spacer,tapered, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-299-8329 has 1 manufacturer part number on file: SS81-178-I (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SS81-178-I: Surface Treatment Document and Classification: TT-P-1757 FED SPEC 1ST TREATMENT RESPONSE OR MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE; Cross-Sectional Height: 0.050 INCHES NOMINAL IN; Minor Height: 0.010 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/9,T7351 OR T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/12,T7351 OR T651,T7351 OR T651 FED SPEC SINGLE MATERIAL RESPONSE. 6 specifications are 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.