PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SN63PB37WRMAP3, 0.025 1LBSolder,lead-Tin Alloy

American Society for Testing and Materials Dba Astm International · NSN 3439-01-372-0108 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-372-0108 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-372-0108. Primary manufacturer part number: SN63PB37WRMAP3, 0.025 1LB.
Features
  • Solder,lead-Tin Alloy — FSC 3439
  • Chemical Composition Percentage: TIN 63; LEAD 37
  • Diameter: 0.025 INCHES NOMINAL IN
  • Wire Core Type: ROSIN
  • Physical Form: WIRE
  • 4 verified cross-references
  • Primary manufacturer: American Society for Testing and Materials Dba Astm International
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Solder,lead-Tin Alloy, cataloged under National Stock Number 3439-01-372-0108, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is American Society for Testing and Materials Dba Astm International. Government technical data includes 4 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-01-372-0108
Primary Part NumberSN63PB37WRMAP3, 0.025 1LB
Item NameSolder,lead-Tin Alloy
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Chemical Composition PercentageTIN 63; LEAD 37
Diameter0.025 INCHES NOMINAL IN
Wire Core TypeROSIN
Physical FormWIRE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3439-01-398-3036SN63PB37WRMAP3 INTERCHANGEABLE
Solder,tin Alloy
Ipc International Inc Dba Global Electronics Association
Cross-Reference Index
Part NumberManufacturer
ASTM B32 American Society for Testing and Materials Dba Astm International (USA)
QQ-S-571SN63WRMAP3-0-025 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
SN63PB37WRMAP3 American Society for Testing and Materials Dba Astm International (USA)
SN63PB37WRMAP3, 0.025 1LB PRIMARY American Society for Testing and Materials Dba Astm International (USA)
Related Parts
3439-01-398-3036INTERCHANGEABLE
SOLDER,TIN ALLOY
SN63PB37WRMAP3

Frequently Asked Questions

What is NSN 3439-01-372-0108?

NSN 3439-01-372-0108 is a Solder,lead-Tin Alloy, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-372-0108?

NSN 3439-01-372-0108 has 4 cross-referenced part numbers: ASTM B32 (American Society for Testing and Materials Dba Astm International), QQ-S-571SN63WRMAP3-0-025 (Federal Specifications Promulgated by General Services Administration Washington DC), SN63PB37WRMAP3 (American Society for Testing and Materials Dba Astm International), SN63PB37WRMAP3, 0.025 1LB (American Society for Testing and Materials Dba Astm International).

What NSN replaces 3439-01-372-0108?

There is 1 known substitute for 3439-01-372-0108: 3439-01-398-3036. Verify interchangeability with system specifications before substitution.

What are the specifications of SN63PB37WRMAP3, 0.025 1LB?

Key specifications for SN63PB37WRMAP3, 0.025 1LB: Chemical Composition Percentage: TIN 63; LEAD 37; Diameter: 0.025 INCHES NOMINAL IN; Special Features: FLUX PERCENTAGE 3.0; Wire Core Type: ROSIN. 5 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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