PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-R-17131L1Rod,welding

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3439-01-376-9906 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-376-9906 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-376-9906. Primary manufacturer part number: MIL-R-17131L1.
Features
  • Rod,welding — FSC 3439
  • Outside Diameter: 0.250 INCHES NOMINAL IN
  • Filler Metal Chemical Composition in Percent: 6.00 TUNGSTEN MAXIMUM SECOND ELEMENT
  • Filler Metal Chemical Composition in Percent: 3.00 IRON NOMINAL FOURTH ELEMENT
  • Filler Metal Chemical Composition in Percent: 3.00 NICKEL NOMINAL THIRD ELEMENT
  • Departure From Cited Document: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
  • Process Type for Which Designed: OXYACETYLENE
  • Filler Metal Chemical Composition in Percent: 2.00 SILICON MAXIMUM FIFTH ELEMENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Rod,welding, cataloged under National Stock Number 3439-01-376-9906, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN3439-01-376-9906
Primary Part NumberMIL-R-17131L1
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
Outside Diameter0.250 INCHES NOMINAL IN
Filler Metal Chemical Composition in Percent6.00 TUNGSTEN MAXIMUM SECOND ELEMENT
Filler Metal Chemical Composition in Percent3.00 IRON NOMINAL FOURTH ELEMENT
Filler Metal Chemical Composition in Percent3.00 NICKEL NOMINAL THIRD ELEMENT
Departure From Cited DocumentQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
Process Type for Which DesignedOXYACETYLENE
Filler Metal Chemical Composition in Percent2.00 SILICON MAXIMUM FIFTH ELEMENT
Physical FormSTRAIGHT
Filler Metal Chemical Composition in Percent1.00 MOLYBDENUM NOMINAL EIGHTH ELEMENT
Length12.000 INCHES NOMINAL IN
Filler Metal Chemical Composition in Percent1.40 CARBON MAXIMUM SIXTH ELEMENT
Criticality Code JustificationZZZW
ShapeROUND
Filler Metal Chemical Composition in Percent32.00 CHROMIUM MAXIMUM FIRST ELEMENT
Filler Metal Chemical Composition in Percent1.00 MANGANESE NOMINAL SEVENTH ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3439-00-065-8478 INTERCHANGEABLE
Rod,welding
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.
3439-01-377-0073 INTERCHANGEABLE
Rod,welding
Cross-Reference Index
Part NumberManufacturer
MIL-R-17131L1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-RCOCR-A-1L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-RCOCR-A-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-17131 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
3439-00-065-8478INTERCHANGEABLE
ROD,WELDING
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
3439-01-377-0073INTERCHANGEABLE
ROD,WELDING

Frequently Asked Questions

What is NSN 3439-01-376-9906?

NSN 3439-01-376-9906 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 3439-01-376-9906?

NSN 3439-01-376-9906 has 4 cross-referenced part numbers: MIL-R-17131L1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-RCOCR-A-1L1 (Naval Inventory Control Point Mechanicsburg), MIL-RCOCR-A-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-17131 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 3439-01-376-9906?

There are 6 known substitutes for 3439-01-376-9906: 3439-00-065-8478, 3439-00-277-2107, 3439-00-542-0411 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-R-17131L1?

Key specifications for MIL-R-17131L1: Outside Diameter: 0.250 INCHES NOMINAL IN; Filler Metal Chemical Composition in Percent: 6.00 TUNGSTEN MAXIMUM SECOND ELEMENT; Filler Metal Chemical Composition in Percent: 3.00 IRON NOMINAL FOURTH ELEMENT; Filler Metal Chemical Composition in Percent: 3.00 NICKEL NOMINAL THIRD ELEMENT. 15 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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