PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ER70S-3Electrode,welding

American Welding Society, Inc. · NSN 3439-01-012-1003 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-012-1003 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-012-1003. Primary manufacturer part number: ER70S-3.
Features
  • Electrode,welding — FSC 3439
  • Material: STEEL FILLER
  • Shape: ROUND
  • Polarity Characteristic: REVERSE
  • Container Type: REEL
  • Weld Position for Which Designed: HORIZONTAL
  • Flux Coating Type: SHIELDED ARC
  • Quantity Within Each Unit Package: 25.0 POUNDS LBS
Applications
  • Applications requiring Steel Filler construction
General Description

The Electrode,welding, cataloged under National Stock Number 3439-01-012-1003, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is American Welding Society, Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-01-012-1003
Primary Part NumberER70S-3
Item NameElectrode,welding
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAmerican Welding Society, Inc.
StatusACTIVE
MaterialSTEEL FILLER
ShapeROUND
Polarity CharacteristicREVERSE
Container TypeREEL
Weld Position for Which DesignedHORIZONTAL
Flux Coating TypeSHIELDED ARC
Quantity Within Each Unit Package25.0 POUNDS LBS
Current TypeDC
Outside Diameter0.045 INCHES NOMINAL IN
Physical FormROLL
Nondefinitive Spec/std Data3B FORM AND 70S-3 TYPE
Material Document and ClassificationAWSA5.18-79,CL E70S-3 ASSN STD SINGLE MATERIAL RESPONSE FILLER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-188-7938 INTERCHANGEABLE
Nut,plain,blind Rivet
3439-00-204-3203 INTERCHANGEABLE
Rod,welding
5360-00-266-4910A675 INTERCHANGEABLE
Spring,helical,compression
Crane Co Div Valve Div
3439-00-372-4776AWSA5.18-79 E70S-3 0.045 12LB INTERCHANGEABLE
Electrode,welding
American Welding Society, Inc.
3439-00-593-2241AWSA5.18-79 E70S-3 0.035 2-1/2LB INTERCHANGEABLE
Electrode,welding
American Welding Society, Inc.
3439-00-602-1544 INTERCHANGEABLE
Electrode,welding
3020-00-623-5324AS25 INTERCHANGEABLE
Pulley,groove
Emerson Electric Co Browning Mfg Div
3020-00-661-20849L76 INTERCHANGEABLE
Gear Cluster
Dynalec Corporation
5120-00-761-8109A675 INTERCHANGEABLE
Extractor
Ametek Inc Div Aerospace and Defense
6240-00-764-8237 INTERCHANGEABLE
Lamp,incandescent
Cross-Reference Index
Part NumberManufacturer
IMPERIAL 75 Midstates Wire (USA)
HTS-121G Central Wire Industries Ltd (USA)
P-H CO-85 The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting (USA)
AWS A5.18/A5.18M American Welding Society, Inc. (USA)
A675 Airco Welding Products Div of the Boc Group Inc (USA)
MIL-E-23765-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
25 Hobart Bros Co (USA)
AWSA5.18-79 E70S-3 0.045 25 LB American Welding Society, Inc. (USA)
ER70S-3 PRIMARY American Welding Society, Inc. (USA)
AS-25 Page-Wilson Corp (USA)
Related Parts
5310-00-188-7938INTERCHANGEABLE
NUT,PLAIN,BLIND RIVET
3439-00-204-3203INTERCHANGEABLE
ROD,WELDING
5360-00-266-4910INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
A675
3439-00-372-4776INTERCHANGEABLE
ELECTRODE,WELDING
AWSA5.18-79 E70S-3 0.045 12LB
3439-00-593-2241INTERCHANGEABLE
ELECTRODE,WELDING
AWSA5.18-79 E70S-3 0.035 2-1/2LB
3439-00-602-1544INTERCHANGEABLE
ELECTRODE,WELDING
3020-00-623-5324INTERCHANGEABLE
PULLEY,GROOVE
AS25
3020-00-661-2084INTERCHANGEABLE
GEAR CLUSTER
9L76
5120-00-761-8109INTERCHANGEABLE
EXTRACTOR
A675
6240-00-764-8237INTERCHANGEABLE
LAMP,INCANDESCENT
3439-00-900-8737INTERCHANGEABLE
ROD,WELDING
3439-01-013-2799INTERCHANGEABLE
ELECTRODE,WELDING

Frequently Asked Questions

What is NSN 3439-01-012-1003?

NSN 3439-01-012-1003 is a Electrode,welding, manufactured by American Welding Society, Inc., classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-012-1003?

NSN 3439-01-012-1003 has 10 cross-referenced part numbers: IMPERIAL 75 (Midstates Wire), HTS-121G (Central Wire Industries Ltd), P-H CO-85 (The Esab Group Inc. Dba Esab Welding & Cutting Products Div Esab Welding and Cutting), AWS A5.18/A5.18M (American Welding Society, Inc.), A675 (Airco Welding Products Div of the Boc Group Inc) and 5 more.

What NSN replaces 3439-01-012-1003?

There are 12 known substitutes for 3439-01-012-1003: 5310-00-188-7938, 3439-00-204-3203, 5360-00-266-4910 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ER70S-3?

Key specifications for ER70S-3: Material: STEEL FILLER; Shape: ROUND; Polarity Characteristic: REVERSE; Container Type: REEL. 13 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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