The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-187-2356, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp Electronics and Missiles Div. Government technical data includes 15 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-187-2356 |
| Primary Part Number | 243978 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corp Electronics and Missiles Div |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.093 INCHES NOMINAL IN |
| Style Designator | BUTT PARALLEL HOLES |
| Mounting Hole Diameter | 0.094 INCHES NOMINAL IN |
| Pin Center to Body Edge Distance | 0.875 INCHES NOMINAL IN |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.592 INCHES NOMINAL IN |
| Knuckle Quantity | 3 |
| End Knuckle Length | 0.400 INCHES NOMINAL IN |
| Knuckle Length | 0.495 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY OVERALL |
| 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 |
|---|---|
| 243978 PRIMARY | Lockheed Martin Corp Electronics and Missiles Div (USA) |
NSN 5340-01-187-2356 is a Leaf,butt Hinge, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-187-2356 has 1 manufacturer part number on file: 243978 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 243978: Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.093 INCHES NOMINAL IN; Style Designator: BUTT PARALLEL HOLES; Mounting Hole Diameter: 0.094 INCHES NOMINAL IN. 15 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.