The Hinge,butt, cataloged under National Stock Number 5340-01-075-1144, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Daro Industries Inc. Government technical data includes 16 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 | 5340-01-075-1144 |
| Primary Part Number | B-520-A |
| Item Name | Hinge,butt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Daro Industries Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 7 |
| Reversible Feature | NOT INCLUDED |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Body Width | 5.000 INCHES NOMINAL IN |
| Pin Tip Style | CONE |
| Style Designator | BUTT |
| Mounting Hole Diameter | 0.265 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Pin Center to Body Edge Distance | 4.000 INCHES NOMINAL IN |
| Material Thickness | 0.250 INCHES NOMINAL IN |
| Pin Removability | REMOVABLE |
| Knuckle Quantity | 2 |
| Surface Treatment | UNABLE TO DECODE |
| Material | UNABLE TO DECODE |
| Rising Pin | INCLUDED |
| 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 |
NSN 5340-01-075-1144 is a Hinge,butt, manufactured by Daro Industries Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-075-1144 has 2 manufacturer part numbers on file: B520A (Autoline Products Ltd), B-520-A (Daro Industries Inc).
Key specifications for B-520-A: Mounting Hole Quantity: 7; Reversible Feature: NOT INCLUDED; Surface Treatment Document and Classification: UNABLE TO DECODE; Body Width: 5.000 INCHES NOMINAL IN. 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.