The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-031-7021, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 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 | 5340-01-031-7021 |
| Primary Part Number | 8722185 |
| Item Name | Leaf,butt Hinge |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Reversible Feature | NOT INCLUDED |
| Knuckle Inside Diameter | 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Style Designator | BUTT PARALLEL HOLES |
| Material Document and Classification | QQ-S-630 COMPOSITION C1010 THRU C1020 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM A576 GRADE 1010 THRU 1020 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 GRADE 1010 THRU 1020 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-637 COMPOSITION 1110 THRU 1119 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.500 INCHES NOMINAL IN |
| Pin Center to Body Edge Distance | 1.930 INCHES NOMINAL IN |
| Hinge Pin | NOT INCLUDED |
| Material Thickness | 0.312 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes Along Length | 3.375 INCHES NOMINAL IN |
| Knuckle Quantity | 2 |
| Knuckle Length | 0.781 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| 8722185 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5340-01-031-7021 is a Leaf,butt Hinge, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-031-7021 has 1 manufacturer part number on file: 8722185 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8722185: Mounting Hole Quantity: 2; Reversible Feature: NOT INCLUDED; Knuckle Inside Diameter: 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN; Style Designator: BUTT PARALLEL HOLES. 15 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.