The Leaf,butt Hinge, cataloged under National Stock Number 5340-00-074-1539, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-074-1539 |
| Primary Part Number | A02S7018-27 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-P-6808 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Hinge Pin | NOT INCLUDED |
| Knuckle Quantity | 3 |
| Surface Treatment | CHROMATE AND CHROMATE ZINC OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Knuckle Type | FRICTION |
| Performance Type | LIGHT DUTY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A02S7018-27 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| A02S7018-27 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-00-074-1539 is a Leaf,butt Hinge, manufactured by The Boeing Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-074-1539 has 1 manufacturer part number on file: A02S7018-27 (The Boeing Company).
Key specifications for A02S7018-27: Reversible Feature: NOT INCLUDED; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-P-6808 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Hinge Pin: NOT INCLUDED; Knuckle Quantity: 3. 8 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.