The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-203-3376, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-203-3376 |
| Primary Part Number | BACH20AA-2-3 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.270 INCHES NOMINAL IN |
| Style Designator | BUTT BLANK |
| Pin Center to Body Edge Distance | 0.750 INCHES NOMINAL IN |
| Material Thickness | 0.044 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN |
| End Knuckle Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Knuckle Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE BODY |
| Surface Treatment | CADMIUM AND CHROMATE PIN |
| Material | ALUMINUM ALLOY 7075 BODY |
| Material | STEEL CORROSION RESISTING PIN |
| Knuckle Type | FRICTION |
| Performance Type | NOT RATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| BACH20AA-2-3 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| VS20101-2-3 | 5/9 Secondary reference The Boeing Company |
NSN 5340-01-203-3376 is a Leaf,butt Hinge, manufactured by The Boeing Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-203-3376 has 1 manufacturer part number on file: BACH20AA-2-3 (The Boeing Company).
Key specifications for BACH20AA-2-3: Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.270 INCHES NOMINAL IN; Style Designator: BUTT BLANK; Overall Length: 7.000 INCHES NOMINAL IN. 13 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.