The Leaf,butt Hinge, cataloged under National Stock Number 5340-00-528-6635, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-528-6635 |
| Primary Part Number | 6-23426-503 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Reversible Feature | NOT INCLUDED |
| Surface Treatment Document and Classification | NFS 76 76823 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Knuckle Inside Diameter | 0.180 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Style Designator | BUTT BLANK |
| Material Document and Classification | MIL-S-6758 COMPOSITION 4130 CONDITION D1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pin Center to Body Edge Distance | 1.730 INCHES MINIMUM AND 1.770 INCHES MAXIMUM IN |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.078 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Knuckle Quantity | 6 |
| Knuckle Length | 0.491 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4130 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 |
|---|---|
| 6-23426-503 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6-23426-503 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 6-23426-503 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 5340-00-528-6635 is a Leaf,butt Hinge, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-528-6635 has 1 manufacturer part number on file: 6-23426-503 (Northrop Grumman Systems Corporation).
Key specifications for 6-23426-503: Reversible Feature: NOT INCLUDED; Surface Treatment Document and Classification: NFS 76 76823 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Knuckle Inside Diameter: 0.180 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Style Designator: BUTT BLANK. 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.