PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AIRCO 312 AC-DC 0.093Electrode,welding

Airco Welding Products Div of the Boc Group Inc · NSN 3439-00-902-4209 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-902-4209 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-902-4209. Primary manufacturer part number: AIRCO 312 AC-DC 0.093.
Features
  • Electrode,welding — FSC 3439
  • Weld Position for Which Designed: ALL POSITIONS
  • Outside Diameter: 0.093 INCHES NOMINAL IN
  • Material Document and Classification: MIL-E-22200/2,TY MIL-312-16 MIL SPEC SINGLE MATERIAL RESPONSE FILLER
  • Material: STEEL FILLER
  • Shape: ROUND
  • Current Type: AC OR DC
  • Flux Coating Type: STABILIZED ARC OR SHIELDED ARC
Applications
  • Applications requiring Steel Filler construction
General Description

The Electrode,welding, cataloged under National Stock Number 3439-00-902-4209, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Airco Welding Products Div of the Boc Group Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3439-00-902-4209
Primary Part NumberAIRCO 312 AC-DC 0.093
Item NameElectrode,welding
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAirco Welding Products Div of the Boc Group Inc
StatusCANCELLED
Weld Position for Which DesignedALL POSITIONS
Outside Diameter0.093 INCHES NOMINAL IN
Material Document and ClassificationMIL-E-22200/2,TY MIL-312-16 MIL SPEC SINGLE MATERIAL RESPONSE FILLER
MaterialSTEEL FILLER
ShapeROUND
Current TypeAC OR DC
Flux Coating TypeSTABILIZED ARC OR SHIELDED ARC
Length12.000 INCHES NOMINAL IN
Polarity CharacteristicREVERSE
Physical FormSTRAIGHT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3439-00-165-4168E312-16 0.188 10LB INTERCHANGEABLE
Electrode,welding
American Welding Society, Inc.
3439-00-165-4169 INTERCHANGEABLE
Electrode,welding
Cross-Reference Index
Part NumberManufacturer
AIRCO 312 AC-DC 0.093 Airco Welding Products Div of the Boc Group Inc (USA)
ARCAL0Y312-16 The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting (USA)
MIL-E-22200-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MCKAY 29-9 TY312 AC-DC 0.093 Hobart Bros Co Mckay Welding Products Div (USA)
ARCALOY 312 AC-DC 0.093 The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting (USA)
A5-4-69E312-16 American Welding Society, Inc. (USA)
MIL-312-16 0.093 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3439-00-165-4168INTERCHANGEABLE
ELECTRODE,WELDING
E312-16 0.188 10LB
3439-00-165-4169INTERCHANGEABLE
ELECTRODE,WELDING

Frequently Asked Questions

What is NSN 3439-00-902-4209?

NSN 3439-00-902-4209 is a Electrode,welding, manufactured by Airco Welding Products Div of the Boc Group Inc, classified under FSC 3439 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3439-00-902-4209?

NSN 3439-00-902-4209 has 7 cross-referenced part numbers: AIRCO 312 AC-DC 0.093 (Airco Welding Products Div of the Boc Group Inc), ARCAL0Y312-16 (The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting), MIL-E-22200-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MCKAY 29-9 TY312 AC-DC 0.093 (Hobart Bros Co Mckay Welding Products Div), ARCALOY 312 AC-DC 0.093 (The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting) and 2 more.

What NSN replaces 3439-00-902-4209?

There are 2 known substitutes for 3439-00-902-4209: 3439-00-165-4168, 3439-00-165-4169. Verify interchangeability with system specifications before substitution.

What are the specifications of AIRCO 312 AC-DC 0.093?

Key specifications for AIRCO 312 AC-DC 0.093: Weld Position for Which Designed: ALL POSITIONS; Outside Diameter: 0.093 INCHES NOMINAL IN; Material Document and Classification: MIL-E-22200/2,TY MIL-312-16 MIL SPEC SINGLE MATERIAL RESPONSE FILLER; Material: STEEL FILLER. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3439-00-902-4209 still in active supply?

NSN 3439-00-902-4209 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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