PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50731Adapter,spline

Danfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co · NSN 3040-01-389-7019 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-389-7019 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-389-7019. Primary manufacturer part number: 50731.
Features
  • Adapter,spline — FSC 3040
  • Outside Diameter: 1.350 INCHES NOMINAL IN
  • Teeth Quantity: 9
  • Material: STEEL
  • Spline Type: INTERNAL
  • Spline Length: 0.795 INCHES NOMINAL IN
  • Spline Major Diameter: 0.6250 INCHES MINIMUM AND 0.6360 INCHES MAXIMUM IN
  • Spline Minor Diameter: 0.5089 INCHES MINIMUM AND 0.5139 INCHES MAXIMUM IN
Applications
  • Applications requiring Steel construction
General Description

The Adapter,spline, cataloged under National Stock Number 3040-01-389-7019, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Danfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-389-7019
Primary Part Number50731
Item NameAdapter,spline
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerDanfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co
StatusACTIVE
Outside Diameter1.350 INCHES NOMINAL IN
Teeth Quantity9
MaterialSTEEL
Spline TypeINTERNAL
Spline Length0.795 INCHES NOMINAL IN
Spline Major Diameter0.6250 INCHES MINIMUM AND 0.6360 INCHES MAXIMUM IN
Spline Minor Diameter0.5089 INCHES MINIMUM AND 0.5139 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5815-00-356-3393SC-B-70177 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6210-00-555-651650731-2 INTERCHANGEABLE
Light Assembly,indicator
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
3130-00-586-0424 INTERCHANGEABLE
Bearing Unit,plain
4720-00-730-53545073-1 INTERCHANGEABLE
Hose,preformed
Flexco, Inc
4730-01-043-374931530 INTERCHANGEABLE
Adapter,straight,tube to Boss
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5950-01-089-75695209-413 INTERCHANGEABLE
Transformer
Raytheon Company Div Rmd Strategic
Cross-Reference Index
Part NumberManufacturer
50731 PRIMARY Danfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co (USA)
12414373 Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA)
50731 Sauer-Sundstrand Hydro-Transmission Div (USA)
12414373 Amz Alabama Inc. (USA)
12414373 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5815-00-356-3393INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SC-B-70177
6210-00-555-6516INTERCHANGEABLE
LIGHT ASSEMBLY,INDICATOR
50731-2
3130-00-586-0424INTERCHANGEABLE
BEARING UNIT,PLAIN
4720-00-730-5354INTERCHANGEABLE
HOSE,PREFORMED
5073-1
4730-01-043-3749INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
31530
5950-01-089-7569INTERCHANGEABLE
TRANSFORMER
5209-413

Frequently Asked Questions

What is NSN 3040-01-389-7019?

NSN 3040-01-389-7019 is a Adapter,spline, manufactured by Danfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-389-7019?

NSN 3040-01-389-7019 has 5 cross-referenced part numbers: 50731 (Danfoss Power Solutions (us) Company Dba Sauer-Danfoss Us Co), 12414373 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 50731 (Sauer-Sundstrand Hydro-Transmission Div), 12414373 (Amz Alabama Inc.), 12414373 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 3040-01-389-7019?

There are 6 known substitutes for 3040-01-389-7019: 5815-00-356-3393, 6210-00-555-6516, 3130-00-586-0424 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50731?

Key specifications for 50731: Outside Diameter: 1.350 INCHES NOMINAL IN; Teeth Quantity: 9; Material: STEEL; End Item Identification: HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS). 9 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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