PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-85731Leaf,butt Hinge

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-01-345-6419 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-345-6419 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-345-6419. Primary manufacturer part number: MIL-F-85731.
Features
  • Leaf,butt Hinge — FSC 5340
  • Mounting Hole Diameter: 0.195 INCHES NOMINAL IN
  • Style Designator: BUTT PARALLEL HOLES
  • Material: STEEL OVERALL
  • Knuckle Type: FRICTION
  • Mounting Hole Quantity: 2
  • Knuckle Length: 0.125 INCHES NOMINAL IN
  • Pin Center to Body Edge Distance: 0.344 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Leaf,butt Hinge, cataloged under National Stock Number 5340-01-345-6419, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-345-6419
Primary Part NumberMIL-F-85731
Item NameLeaf,butt Hinge
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Mounting Hole Diameter0.195 INCHES NOMINAL IN
Style DesignatorBUTT PARALLEL HOLES
MaterialSTEEL OVERALL
Knuckle TypeFRICTION
Mounting Hole Quantity2
Knuckle Length0.125 INCHES NOMINAL IN
Pin Center to Body Edge Distance0.344 INCHES NOMINAL IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Knuckle Inside Diameter0.160 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
Material Thickness0.125 INCHES NOMINAL IN
Performance TypeNOT RATED
Knuckle Quantity2
Center to Center Distance Between Mounting Holes Along Length1.000 INCHES NOMINAL IN
Hinge PinNOT INCLUDED
Reversible FeatureNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-00-340-4131
HAZMATNo
Unit of IssueEA
Verified Substitutes 8
No Item Name Available
Leaf,butt Hinge
5340-01-345-6422 INTERCHANGEABLE
Leaf,strap 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
MIL-F-85731 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M85731/1-18 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS14108-18 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
10154142 Nimikkeistokeskus Ncb Finland (FIN)
MIL-DTL-85731/1 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
5340-01-305-9555SUCCESSOR
NO ITEM NAME AVAILABLE
5340-01-345-6422INTERCHANGEABLE
LEAF,STRAP 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 5340-01-345-6419?

NSN 5340-01-345-6419 is a Leaf,butt 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: cancelled.

What are the part numbers for NSN 5340-01-345-6419?

NSN 5340-01-345-6419 has 5 cross-referenced part numbers: MIL-F-85731 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M85731/1-18 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS14108-18 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 10154142 (Nimikkeistokeskus Ncb Finland), MIL-DTL-85731/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-01-345-6419?

There are 8 known substitutes for 5340-01-345-6419: 5340-01-305-9555, 5340-00-340-4131, 5340-01-345-6422 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-85731?

Key specifications for MIL-F-85731: Mounting Hole Diameter: 0.195 INCHES NOMINAL IN; Style Designator: BUTT PARALLEL HOLES; Material: STEEL OVERALL; Knuckle Type: FRICTION. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-01-345-6419 still in active supply?

NSN 5340-01-345-6419 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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