The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-266-4139, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-266-4139 |
| Primary Part Number | 123BM10376-1 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN |
| Style Designator | BUTT BLANK |
| Material Document and Classification | QQ-A-225/9,ALLOY 7075-T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pin Center to Body Edge Distance | 1.328 INCHES NOMINAL IN |
| Hinge Mounting Type | HALF SURFACE |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Knuckle Quantity | 4 |
| Knuckle Length | 0.616 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 7075 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 |
|---|---|
| 123BM10376-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123BM10376-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123B10376-1A | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5340-01-266-4139 is a Leaf,butt Hinge, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-266-4139 has 1 manufacturer part number on file: 123BM10376-1 (Northrop Grumman Systems Corporation).
Key specifications for 123BM10376-1: Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN; Style Designator: BUTT BLANK; Material Document and Classification: QQ-A-225/9,ALLOY 7075-T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.