The Spacer,sleeve, cataloged under National Stock Number 5365-00-034-5256, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-034-5256 |
| Primary Part Number | BB421-6-3 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Flange Outside Diameter | 0.2966 INCHES MINIMUM AND 0.3016 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.1930 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | AMS 5525,A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.1250 INCHES NOMINAL IN |
| Flange Width | 0.0420 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN |
| Material | IRON ALLOY 660 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 |
|---|---|
| BB421-6-3 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| GS530AG6-3 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5365-00-034-5256 is a Spacer,sleeve, manufactured by Hi-Shear Corporation, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-034-5256 has 1 manufacturer part number on file: BB421-6-3 (Hi-Shear Corporation).
Key specifications for BB421-6-3: Corner Shape: SQUARE ALL CORNERS; Flange Outside Diameter: 0.2966 INCHES MINIMUM AND 0.3016 INCHES MAXIMUM IN; Body Outside Diameter: 0.1930 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM 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.