PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RTS300 0.028 1LBSolder,tin Alloy

Federated Metals Corp Subsidiary of Asarco Inc · NSN 3439-00-095-3672 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-095-3672 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-095-3672. Primary manufacturer part number: RTS300 0.028 1LB.
Features
  • Solder,tin Alloy — FSC 3439
  • Wire Core Type: ROSIN
  • Content Within Each Unit Package: 1 LB LBS
  • Diameter: 0.028 INCHES NOMINAL IN
  • Chemical Composition Percentage: TIN 61.5; LEAD 37.53; ANTIMONY 0.5; BISMUTH 0.25; COPPER 0.08; OTHER ELEMENTS 0.08; ARSENIC 0.03; IRON 0.02; ALUMINUM 0.005; ZINC 0.005
  • 8 verified cross-references
  • Primary manufacturer: Federated Metals Corp Subsidiary of Asarco Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Solder,tin Alloy, cataloged under National Stock Number 3439-00-095-3672, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Federated Metals Corp Subsidiary of Asarco Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3439-00-095-3672
Primary Part NumberRTS300 0.028 1LB
Item NameSolder,tin Alloy
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerFederated Metals Corp Subsidiary of Asarco Inc
StatusCANCELLED
Wire Core TypeROSIN
Content Within Each Unit Package1 LB LBS
Diameter0.028 INCHES NOMINAL IN
Chemical Composition PercentageTIN 61.5; LEAD 37.53; ANTIMONY 0.5; BISMUTH 0.25; COPPER 0.08; OTHER ELEMENTS 0.08; ARSENIC 0.03; IRON 0.02; ALUMINUM 0.005; ZINC 0.005
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5935-00-135-425010232907 INTERCHANGEABLE
Mold,potting,electrical Connecto
Us Army Aviation and Missile Command
3439-00-437-6721ASTM B32-04 INTERCHANGEABLE
Solder,tin Alloy
American Society for Testing and Materials Dba Astm International
6130-01-590-6800604022 INTERCHANGEABLE
Power Supply
Arc Technology Solutions, Llc
Cross-Reference Index
Part NumberManufacturer
RTS300 0.028 1LB Federated Metals Corp Subsidiary of Asarco Inc (USA)
60-40-22 Multicore Solders (USA)
QQ-S-571 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
ERSIN Multicore Solders (USA)
AE16 0.028 1LB Canfield Technologies, Llc (USA)
44 RESIN 0.028 1LB Kester Inc (USA)
X45 0.028 1LB Gardiner Solder Co Div of Gardiner Metal Co (USA)
SN60WRAP3 0.028 1LB Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5935-00-135-4250INTERCHANGEABLE
MOLD,POTTING,ELECTRICAL CONNECTO
10232907
3439-00-437-6721INTERCHANGEABLE
SOLDER,TIN ALLOY
ASTM B32-04
6130-01-590-6800INTERCHANGEABLE
POWER SUPPLY
604022

Frequently Asked Questions

What is NSN 3439-00-095-3672?

NSN 3439-00-095-3672 is a Solder,tin Alloy, manufactured by Federated Metals Corp Subsidiary of Asarco Inc, classified under FSC 3439 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3439-00-095-3672?

NSN 3439-00-095-3672 has 8 cross-referenced part numbers: RTS300 0.028 1LB (Federated Metals Corp Subsidiary of Asarco Inc), 60-40-22 (Multicore Solders), QQ-S-571 (Federal Specifications Promulgated by General Services Administration Washington DC), ERSIN (Multicore Solders), AE16 0.028 1LB (Canfield Technologies, Llc) and 3 more.

What NSN replaces 3439-00-095-3672?

There are 3 known substitutes for 3439-00-095-3672: 5935-00-135-4250, 3439-00-437-6721, 6130-01-590-6800. Verify interchangeability with system specifications before substitution.

What are the specifications of RTS300 0.028 1LB?

Key specifications for RTS300 0.028 1LB: Wire Core Type: ROSIN; Content Within Each Unit Package: 1 LB LBS; Diameter: 0.028 INCHES NOMINAL IN; Chemical Composition Percentage: TIN 61.5; LEAD 37.53; ANTIMONY 0.5; BISMUTH 0.25; COPPER 0.08; OTHER ELEMENTS 0.08; ARSENIC 0.03; IRON 0.02; ALUMINUM 0.005; ZINC 0.005. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3439-00-095-3672 still in active supply?

NSN 3439-00-095-3672 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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