The Hinge,butt, cataloged under National Stock Number 5340-00-243-4743, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-243-4743 |
| Primary Part Number | H6099A025A |
| Item Name | Hinge,butt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Body Width | 4.000 INCHES NOMINAL IN |
| Style Designator | BUTT, DOUBLE ACTION, ADJUSTABLE ENCLOSED SPRING |
| Pin Center to Body Edge Distance | 0.684 INCHES NOMINAL IN |
| Hinge Mounting Type | HALF MORTISE |
| Pin Removability | REMOVABLE |
| Knuckle Quantity | 4 |
| Material | UNABLE TO DECODE |
| Rising Pin | NOT INCLUDED |
| 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 |
|---|---|
| H6099A025A | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| H6099A25A | 5/9 Secondary reference U.S. Government activity |
| H6099A025A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-243-4743 is a Hinge,butt, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-243-4743 has 1 manufacturer part number on file: H6099A025A (Leonardo Spa Helicopters Division - Production Site).
Key specifications for H6099A025A: Reversible Feature: NOT INCLUDED; Body Width: 4.000 INCHES NOMINAL IN; Style Designator: BUTT, DOUBLE ACTION, ADJUSTABLE ENCLOSED SPRING; Pin Center to Body Edge Distance: 0.684 INCHES NOMINAL IN. 11 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.