The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-125-8079, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-125-8079 |
| Primary Part Number | 74A330644-2003 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Style Designator | BUTT PARALLEL HOLES |
| Mounting Hole Diameter | 0.191 INCHES NOMINAL IN |
| Pin Center to Body Edge Distance | 1.688 INCHES NOMINAL IN |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.103 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 1.120 INCHES NOMINAL IN |
| Knuckle Quantity | 2 |
| Knuckle Length | 0.505 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 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 |
|---|---|
| 74A330644-2003 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A330644-2003 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10112477 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A330644-2003 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5340-01-125-8079 is a Leaf,butt Hinge, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-125-8079 has 2 manufacturer part numbers on file: 74A330644-2003 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A330644-2003 (The Boeing Company Div Defense).
Key specifications for 74A330644-2003: Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Style Designator: BUTT PARALLEL HOLES; Mounting Hole Diameter: 0.191 INCHES NOMINAL IN. 14 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.