The Spacer,sleeve, cataloged under National Stock Number 5365-00-528-6641, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-528-6641 |
| Primary Part Number | MC12256 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 1.0400 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.2290 INCHES MINIMUM AND 0.2330 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | QQ-A-225/5,T451 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.1400 INCHES MINIMUM AND 0.1450 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Flange Width | 0.0500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2017 OVERALL |
| 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 |
|---|---|
| MC12256 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 10118545 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MC12256 | 5/9 Secondary reference Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace |
NSN 5365-00-528-6641 is a Spacer,sleeve, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-528-6641 has 1 manufacturer part number on file: MC12256 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for MC12256: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 1.0400 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN; Body Outside Diameter: 0.2290 INCHES MINIMUM AND 0.2330 INCHES MAXIMUM IN. 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.