The Hinge,butt, cataloged under National Stock Number 5340-01-232-4344, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Capy Machine Shop Inc. Dba Capy Machine Shop Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-232-4344 |
| Primary Part Number | A51B20318-23 |
| Item Name | Hinge,butt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Capy Machine Shop Inc. Dba Capy Machine Shop Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Reversible Feature | NOT INCLUDED |
| Body Width | 10.500 INCHES NOMINAL IN |
| Style Designator | BUTT |
| Mounting Hole Diameter | 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Pin Center to Body Edge Distance | 0.605 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Hinge Mounting Type | FULL SURFACE |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Pin Removability | NONREMOVABLE |
| 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 |
|---|---|
| A51B20318-23 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| A51B20318-23 | D F P Manufacturing Corp Dba D F P (USA) |
| Reference | Meaning |
|---|---|
| A51B20318-23 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51B20318-23 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51B20318-23 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5340-01-232-4344 is a Hinge,butt, manufactured by Capy Machine Shop Inc. Dba Capy Machine Shop Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-232-4344 has 2 manufacturer part numbers on file: A51B20318-23 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc), A51B20318-23 (D F P Manufacturing Corp Dba D F P).
Key specifications for A51B20318-23: Mounting Hole Quantity: 4; Reversible Feature: NOT INCLUDED; Body Width: 10.500 INCHES NOMINAL IN; Style Designator: BUTT. 11 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.