The Spacer,sleeve, cataloged under National Stock Number 5365-01-326-9579, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5365-01-326-9579 |
| Primary Part Number | 4400B57-1 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Flange Outside Diameter | 0.3750 INCHES NOMINAL IN |
| Body Outside Diameter | 0.2710 INCHES NOMINAL IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | STM D709,GR G-5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.1870 INCHES NOMINAL IN |
| Flange Width | 0.2400 INCHES NOMINAL IN |
| Material | PLASTIC MELAMINE AND GLASS 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 |
|---|---|
| 4400B57-1 | Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp (USA) |
| Reference | Meaning |
|---|---|
| 4400B57-1 | 5/9 Secondary reference U.S. Government activity |
| 4400B57-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5365-01-326-9579 is a Spacer,sleeve, manufactured by Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-326-9579 has 1 manufacturer part number on file: 4400B57-1 (Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp).
Key specifications for 4400B57-1: Corner Shape: SQUARE ALL CORNERS; Flange Outside Diameter: 0.3750 INCHES NOMINAL IN; Body Outside Diameter: 0.2710 INCHES NOMINAL IN; Style Designator: SOLID, EXTERNAL FLANGE ONE END. 8 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.