The Hinge,butt, cataloged under National Stock Number 5340-01-240-8253, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory. Government technical data includes 10 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-240-8253 |
| Primary Part Number | 8U56118-105 |
| Item Name | Hinge,butt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory |
| Status | ACTIVE |
| Pin Diameter | 0.375 INCHES NOMINAL IN |
| Reversible Feature | NOT INCLUDED |
| Style Designator | BUTT |
| Pin Center to Body Edge Distance | 1.500 INCHES NOMINAL IN |
| Hinge Mounting Type | FULL SURFACE |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Pin Removability | NONREMOVABLE |
| Material | UNABLE TO DECODE |
| Knuckle Type | FRICTION |
| Performance Type | HEAVY DUTY |
| 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 |
|---|---|
| 1577A56 | Mcmaster-Carr Supply Co (USA) |
| 8U56118-105 PRIMARY | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory (USA) |
NSN 5340-01-240-8253 is a Hinge,butt, manufactured by Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-240-8253 has 2 manufacturer part numbers on file: 1577A56 (Mcmaster-Carr Supply Co), 8U56118-105 (Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory).
Key specifications for 8U56118-105: Pin Diameter: 0.375 INCHES NOMINAL IN; Reversible Feature: NOT INCLUDED; Style Designator: BUTT; Overall Length: 72.000 INCHES NOMINAL IN. 10 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.