PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-RCOCR-A-1L1Rod,welding

Naval Inventory Control Point Mechanicsburg · NSN 3439-01-377-0073 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-377-0073 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-377-0073. Primary manufacturer part number: MIL-RCOCR-A-1L1.
Features
  • Rod,welding — FSC 3439
  • Filler Metal Chemical Composition in Percent: 6.00 TUNGSTEN MAXIMUM SECOND ELEMENT
  • Filler Metal Chemical Composition in Percent: 1.00 MOLYBDENUM NOMINAL EIGHTH ELEMENT
  • Filler Metal Chemical Composition in Percent: 1.40 CARBON MAXIMUM SIXTH ELEMENT
  • Criticality Code Justification: ZZZW
  • Length: 12.000 INCHES NOMINAL IN
  • Shape: ROUND
  • Filler Metal Chemical Composition in Percent: 32.00 CHROMIUM MAXIMUM FIRST ELEMENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Rod,welding, cataloged under National Stock Number 3439-01-377-0073, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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
NSN3439-01-377-0073
Primary Part NumberMIL-RCOCR-A-1L1
Item NameRod,welding
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Filler Metal Chemical Composition in Percent6.00 TUNGSTEN MAXIMUM SECOND ELEMENT
Filler Metal Chemical Composition in Percent1.00 MOLYBDENUM NOMINAL EIGHTH ELEMENT
Filler Metal Chemical Composition in Percent1.40 CARBON MAXIMUM SIXTH ELEMENT
Criticality Code JustificationZZZW
Length12.000 INCHES NOMINAL IN
ShapeROUND
Filler Metal Chemical Composition in Percent32.00 CHROMIUM MAXIMUM FIRST ELEMENT
Outside Diameter0.188 INCHES NOMINAL IN
Physical FormSTRAIGHT
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
Filler Metal Chemical Composition in Percent1.00 MANGANESE NOMINAL SEVENTH ELEMENT
Filler Metal Chemical Composition in Percent3.00 IRON NOMINAL FOURTH ELEMENT
Filler Metal Chemical Composition in Percent2.00 SILICON MAXIMUM FIFTH ELEMENT
Process Type for Which DesignedOXYACETYLENE
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.
3439-01-376-9906 INTERCHANGEABLE
Rod,welding
Cross-Reference Index
Part NumberManufacturer
MIL-RCOCR-A-1L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-R-17131 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-RCOCR-A-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-17131L1 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
3439-01-376-9906INTERCHANGEABLE
ROD,WELDING

Frequently Asked Questions

What is NSN 3439-01-377-0073?

NSN 3439-01-377-0073 is a Rod,welding, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-377-0073?

NSN 3439-01-377-0073 has 4 cross-referenced part numbers: MIL-RCOCR-A-1L1 (Naval Inventory Control Point Mechanicsburg), MIL-R-17131 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-RCOCR-A-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-17131L1 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 3439-01-377-0073?

There are 6 known substitutes for 3439-01-377-0073: 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-RCOCR-A-1L1?

Key specifications for MIL-RCOCR-A-1L1: Filler Metal Chemical Composition in Percent: 6.00 TUNGSTEN MAXIMUM SECOND ELEMENT; Filler Metal Chemical Composition in Percent: 1.00 MOLYBDENUM NOMINAL EIGHTH ELEMENT; Filler Metal Chemical Composition in Percent: 1.40 CARBON MAXIMUM SIXTH ELEMENT; Criticality Code Justification: ZZZW. 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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