The Hinge,butt, cataloged under National Stock Number 5340-01-300-3772, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 12 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-300-3772 |
| Primary Part Number | 1551AS551-1 |
| Item Name | Hinge,butt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Pin Diameter | 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Mounting Hole Quantity | 12 |
| Reversible Feature | NOT INCLUDED |
| Style Designator | BUTT |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Pin Center to Body Edge Distance | 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Hinge Mounting Type | FULL SURFACE |
| Material Thickness | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Pin Removability | NONREMOVABLE |
| Knuckle Quantity | 19 |
| 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 |
|---|---|
| 1551AS551-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5340-01-300-3772 is a Hinge,butt, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-300-3772 has 1 manufacturer part number on file: 1551AS551-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1551AS551-1: Pin Diameter: 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Mounting Hole Quantity: 12; Reversible Feature: NOT INCLUDED; Style Designator: BUTT. 12 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.