PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M85731/1-15Leaf,strap Hinge

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-01-345-6422 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-345-6422 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-345-6422. Primary manufacturer part number: M85731/1-15.
Features
  • Leaf,strap Hinge — FSC 5340
  • Reversible Feature: NOT INCLUDED
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Style Designator: STRAP
  • Material: STEEL OVERALL
  • Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Pin Center to Body Edge Distance: 1.188 INCHES NOMINAL IN
  • Body Width: 0.450 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Leaf,strap Hinge, cataloged under National Stock Number 5340-01-345-6422, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-345-6422
Primary Part NumberM85731/1-15
Item NameLeaf,strap Hinge
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Reversible FeatureNOT INCLUDED
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Style DesignatorSTRAP
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationQQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Pin Center to Body Edge Distance1.188 INCHES NOMINAL IN
Body Width0.450 INCHES NOMINAL IN
Mounting Hole Quantity2
Knuckle TypeFRICTION
Performance TypeNOT RATED
Material Thickness0.125 INCHES NOMINAL IN
Knuckle Quantity2
Mounting Hole Diameter0.193 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5340-00-340-4131
HAZMATNo
Unit of IssueEA
Verified Substitutes 7
Leaf,butt Hinge
5340-01-345-6419 INTERCHANGEABLE
Leaf,butt Hinge
5340-01-345-6517 INTERCHANGEABLE
Strike,catch
5340-01-359-1337 INTERCHANGEABLE
Bolt Assembly,clamp
5340-01-361-3605 INTERCHANGEABLE
Strike,catch
5340-01-368-6135 INTERCHANGEABLE
Bolt Assembly,clamp
5340-01-371-1012 INTERCHANGEABLE
Leaf,strap Hinge
Cross-Reference Index
Part NumberManufacturer
M85731/1-15 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-85731/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-85731 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5340-00-340-4131 Leaf,butt Hinge
5340-01-345-6419INTERCHANGEABLE
LEAF,BUTT HINGE
5340-01-345-6517INTERCHANGEABLE
STRIKE,CATCH
5340-01-359-1337INTERCHANGEABLE
BOLT ASSEMBLY,CLAMP
5340-01-361-3605INTERCHANGEABLE
STRIKE,CATCH
5340-01-368-6135INTERCHANGEABLE
BOLT ASSEMBLY,CLAMP
5340-01-371-1012INTERCHANGEABLE
LEAF,STRAP HINGE

Frequently Asked Questions

What is NSN 5340-01-345-6422?

NSN 5340-01-345-6422 is a Leaf,strap Hinge, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-345-6422?

NSN 5340-01-345-6422 has 3 cross-referenced part numbers: M85731/1-15 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-85731/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-85731 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-01-345-6422?

There are 7 known substitutes for 5340-01-345-6422: 5340-00-340-4131, 5340-01-345-6419, 5340-01-345-6517 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M85731/1-15?

Key specifications for M85731/1-15: Reversible Feature: NOT INCLUDED; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Style Designator: STRAP; Material: STEEL OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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