The Bushing,sleeve, cataloged under National Stock Number 5365-01-665-3733, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is A.g.h. Industries, Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-665-3733 |
| Primary Part Number | 21E1638-601 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | A.g.h. Industries, Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2417 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 2.00 INCHES NOMINAL IN |
| Body Outside Diameter | 1.2038 INCHES MINIMUM AND 1.2043 INCHES MAXIMUM IN |
| Criticality Code Justification | CXCY |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | ASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OR SAE AMS 4651 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 1.0035 INCHES MINIMUM AND 1.0045 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND ZINC OVERALL |
| Flange Width | 0.144 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 21E1638-601 | A.g.h. Industries, Llc (USA) |
| 21E1638-601 | Fore Machine Company, Inc. (USA) |
| 21E1638-601 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 21E1638-601 | 5/9 Secondary reference Advance Aero-Tech, Inc. |
| 21E1638-601 | 5/2 Secondary reference U.S. Government activity |
| 21E1638-601 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5365-01-665-3733 is a Bushing,sleeve, manufactured by A.g.h. Industries, Llc, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-665-3733 has 3 manufacturer part numbers on file: 21E1638-601 (A.g.h. Industries, Llc), 21E1638-601 (Fore Machine Company, Inc.), 21E1638-601 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 21E1638-601: Surface Treatment Document and Classification: AMS 2417 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 2.00 INCHES NOMINAL IN; Body Outside Diameter: 1.2038 INCHES MINIMUM AND 1.2043 INCHES MAXIMUM IN; Criticality Code Justification: CXCY. 10 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.