The Leaf,butt Hinge, cataloged under National Stock Number 5340-00-160-7791, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-160-7791 |
| Primary Part Number | A51B48503-13 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN |
| Style Designator | BUTT PARALLEL HOLES |
| Mounting Hole Diameter | 0.186 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Pin Center to Body Edge Distance | 1.000 INCHES NOMINAL IN |
| Hinge Mounting Type | FULL SURFACE |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.220 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.750 INCHES NOMINAL IN |
| Knuckle Quantity | 4 |
| End Knuckle Length | 0.160 INCHES NOMINAL IN |
| Knuckle Length | 0.244 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 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 |
|---|---|
| A51B48503-13 | Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp (USA) |
| A51B48503-13 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| A51B48503-13 | Military and Commercial Packaging Co Inc Dba Mac Pac (USA) |
| Reference | Meaning |
|---|---|
| A51B48503-13 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51B48503-13 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| A51B48503 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 5340-00-160-7791 is a Leaf,butt Hinge, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-160-7791 has 3 manufacturer part numbers on file: A51B48503-13 (Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp), A51B48503-13 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems), A51B48503-13 (Military and Commercial Packaging Co Inc Dba Mac Pac).
Key specifications for A51B48503-13: Mounting Hole Quantity: 2; Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN; Style Designator: BUTT PARALLEL HOLES. 16 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.