PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILR17131Rod,welding

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3439-00-065-8478 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-065-8478 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-065-8478. Primary manufacturer part number: MILR17131.
Features
  • Rod,welding — FSC 3439
  • Physical Form: STRAIGHT
  • Filler Metal Chemical Composition in Percent: 32.00 CHROMIUM MAXIMUM FIRST ELEMENT
  • Material: COBALT ALLOY OVERALL
  • Weld Position for Which Designed: HORIZONTAL
  • Filler Metal Chemical Composition in Percent: 2.00 SILICON MAXIMUM FIFTH ELEMENT
  • Nondefinitive Spec/std Data: MIL-RCOCR-A TYPE AND 1/8 IN. DIA SIZE IN
  • Process Type for Which Designed: GAS TUNGSTEN ARC
Applications
  • Applications requiring Cobalt Alloy Overall construction
General Description

The Rod,welding, cataloged under National Stock Number 3439-00-065-8478, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) 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 1 commercial cross-reference from 1 manufacturer, 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
NSN3439-00-065-8478
Primary Part NumberMILR17131
Item NameRod,welding
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Physical FormSTRAIGHT
Filler Metal Chemical Composition in Percent32.00 CHROMIUM MAXIMUM FIRST ELEMENT
MaterialCOBALT ALLOY OVERALL
Weld Position for Which DesignedHORIZONTAL
Filler Metal Chemical Composition in Percent2.00 SILICON MAXIMUM FIFTH ELEMENT
Nondefinitive Spec/std DataMIL-RCOCR-A TYPE AND 1/8 IN. DIA SIZE IN
Process Type for Which DesignedGAS TUNGSTEN ARC
Filler Metal Chemical Composition in Percent3.00 IRON MAXIMUM THIRD ELEMENT
ShapeROUND
Length12.000 INCHES MINIMUM AND 18.000 INCHES MAXIMUM IN
Filler Metal Chemical Composition in Percent6.00 TUNGSTEN MAXIMUM SECOND ELEMENT
Outside Diameter0.125 INCHES NOMINAL IN
Filler Metal Chemical Composition in Percent3.00 NICKEL MAXIMUM FOURTH ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3439-00-277-2107 INTERCHANGEABLE
Rod,welding
3439-00-542-0411 INTERCHANGEABLE
Rod,welding
3439-00-542-0412 INTERCHANGEABLE
Rod,welding
3439-01-022-5848AWSA5.13-70 RCOCR-A 1/8 INTERCHANGEABLE
Rod,welding
American Welding Society, Inc.
3439-01-376-9906 INTERCHANGEABLE
Rod,welding
3439-01-377-0073 INTERCHANGEABLE
Rod,welding
Cross-Reference Index
Part NumberManufacturer
MILR17131 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3439-00-277-2107INTERCHANGEABLE
ROD,WELDING
3439-00-542-0411INTERCHANGEABLE
ROD,WELDING
3439-00-542-0412INTERCHANGEABLE
ROD,WELDING
3439-01-022-5848INTERCHANGEABLE
ROD,WELDING
AWSA5.13-70 RCOCR-A 1/8
3439-01-376-9906INTERCHANGEABLE
ROD,WELDING
3439-01-377-0073INTERCHANGEABLE
ROD,WELDING

Frequently Asked Questions

What is NSN 3439-00-065-8478?

NSN 3439-00-065-8478 is a Rod,welding, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-065-8478?

NSN 3439-00-065-8478 has 1 cross-referenced part number: MILR17131 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 3439-00-065-8478?

There are 6 known substitutes for 3439-00-065-8478: 3439-00-277-2107, 3439-00-542-0411, 3439-00-542-0412 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILR17131?

Key specifications for MILR17131: Physical Form: STRAIGHT; Filler Metal Chemical Composition in Percent: 32.00 CHROMIUM MAXIMUM FIRST ELEMENT; Material: COBALT ALLOY OVERALL; Weld Position for Which Designed: HORIZONTAL. 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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