PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-R-17131Rod,welding

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3439-00-277-2107 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-277-2107 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-277-2107. Primary manufacturer part number: MIL-R-17131.
Features
  • Rod,welding — FSC 3439
  • Physical Form: STRAIGHT
  • Filler Metal Chemical Composition in Percent: 3.00 NICKEL NOMINAL SIXTH ELEMENT
  • Material Document and Classification: MIL-R-17131,TY RCOCR-C-1 MIL SPEC SINGLE MATERIAL RESPONSE FILLER
  • Filler Metal Chemical Composition in Percent: 1.00 MANGANESE NOMINAL EIGHTH ELEMENT
  • Material: COBALT ALLOY FILLER
  • Nondefinitive Spec/std Data: ROD FORM AND 1/4 SIZE AND MIL-RCOCR-C-1 TYPE
  • Process Type for Which Designed: OXYACETYLENE
Applications
  • Applications requiring Cobalt Alloy Filler construction
General Description

The Rod,welding, cataloged under National Stock Number 3439-00-277-2107, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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
NSN3439-00-277-2107
Primary Part NumberMIL-R-17131
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 Percent3.00 NICKEL NOMINAL SIXTH ELEMENT
Material Document and ClassificationMIL-R-17131,TY RCOCR-C-1 MIL SPEC SINGLE MATERIAL RESPONSE FILLER
Filler Metal Chemical Composition in Percent1.00 MANGANESE NOMINAL EIGHTH ELEMENT
MaterialCOBALT ALLOY FILLER
Nondefinitive Spec/std DataROD FORM AND 1/4 SIZE AND MIL-RCOCR-C-1 TYPE
Process Type for Which DesignedOXYACETYLENE
Filler Metal Chemical Composition in Percent14.00 TUNGSTEN NOMINAL THIRD ELEMENT
Filler Metal Chemical Composition in Percent33.00 CHROMIUM NOMINAL SECOND ELEMENT
Weld Position for Which DesignedALL POSITIONS
Filler Metal Chemical Composition in Percent3.00 CARBON NOMINAL FOURTH ELEMENT
Filler Metal Chemical Composition in Percent3.00 IRON NOMINAL FIFTH ELEMENT
Length12.000 INCHES NOMINAL IN
Filler Metal Chemical Composition in Percent2.00 SILICON NOMINAL SEVENTH ELEMENT
Outside Diameter0.250 INCHES NOMINAL IN
ShapeROUND
Filler Metal Chemical Composition in Percent40.00 COBALT NOMINAL FIRST ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3439-00-065-8478 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
MIL-R-17131 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-RCOCR-C-1 0.250 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3439-00-065-8478INTERCHANGEABLE
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 3439-00-277-2107?

NSN 3439-00-277-2107 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 3439-00-277-2107?

NSN 3439-00-277-2107 has 2 cross-referenced part numbers: MIL-R-17131 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-RCOCR-C-1 0.250 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 3439-00-277-2107?

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

What are the specifications of MIL-R-17131?

Key specifications for MIL-R-17131: Physical Form: STRAIGHT; Filler Metal Chemical Composition in Percent: 3.00 NICKEL NOMINAL SIXTH ELEMENT; Material Document and Classification: MIL-R-17131,TY RCOCR-C-1 MIL SPEC SINGLE MATERIAL RESPONSE FILLER; Filler Metal Chemical Composition in Percent: 1.00 MANGANESE NOMINAL EIGHTH ELEMENT. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com