The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-249-7681, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Gichner Systems Group, Inc. Div C5isr Division. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-249-7681 |
| Primary Part Number | 1339AS218-1 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Gichner Systems Group, Inc. Div C5isr Division |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.503 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN |
| Style Designator | BUTT PARALLEL HOLES |
| Mounting Hole Diameter | 0.312 INCHES NOMINAL IN |
| Pin Center to Body Edge Distance | 1.7483 INCHES NOMINAL IN |
| Hinge Pin | NOT INCLUDED |
| Center to Center Distance Between Mounting Holes Along Length | 3.745 INCHES MINIMUM AND 3.755 INCHES MAXIMUM IN |
| Knuckle Quantity | 2 |
| Knuckle Length | 1.250 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE 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 |
|---|---|
| 1339AS218-1 PRIMARY | Gichner Systems Group, Inc. Div C5isr Division (USA) |
| 1339AS218-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5340-01-249-7681 is a Leaf,butt Hinge, manufactured by Gichner Systems Group, Inc. Div C5isr Division, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-249-7681 has 2 manufacturer part numbers on file: 1339AS218-1 (Gichner Systems Group, Inc. Div C5isr Division), 1339AS218-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1339AS218-1: Mounting Hole Quantity: 2; Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.503 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN; Style Designator: BUTT PARALLEL HOLES. 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.