The Leaf,butt Hinge, cataloged under National Stock Number 5340-00-138-4703, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 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 | 5340-00-138-4703 |
| Primary Part Number | 53-310079-7 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Reversible Feature | NOT INCLUDED |
| Style Designator | BUTT PARALLEL HOLES |
| Mounting Hole Diameter | 0.191 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Pin Center to Body Edge Distance | 1.545 INCHES NOMINAL IN |
| Hinge Pin | NOT INCLUDED |
| Center to Center Distance Between Mounting Holes Along Length | 1.000 INCHES NOMINAL IN |
| Knuckle Quantity | 4 |
| End Knuckle Length | 0.620 INCHES NOMINAL IN |
| Knuckle Length | 0.255 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN |
| Material | TITANIUM ALLOY OVERALL |
| Knuckle Type | FRICTION |
| 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 |
|---|---|
| 53-310079-7 | Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA) |
| 53-310079-7 PRIMARY | The Boeing Company Div Defense (USA) |
| 53-310079-7 | Kitco Llc (USA) |
| 53-310079-7 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
NSN 5340-00-138-4703 is a Leaf,butt Hinge, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-138-4703 has 4 manufacturer part numbers on file: 53-310079-7 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc), 53-310079-7 (The Boeing Company Div Defense), 53-310079-7 (Kitco Llc), 53-310079-7 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company).
Key specifications for 53-310079-7: Mounting Hole Quantity: 2; Reversible Feature: NOT INCLUDED; Style Designator: BUTT PARALLEL HOLES; Mounting Hole Diameter: 0.191 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN. 12 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.