PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SOLDER ALLOY 3037Solder,bismuth-Lead Alloy

R & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc · NSN 3439-00-239-8506 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-239-8506 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-239-8506. Primary manufacturer part number: SOLDER ALLOY 3037.
Features
  • Solder,bismuth-Lead Alloy — FSC 3439
  • Length: 13.500 INCHES NOMINAL IN
  • Chemical Composition Percentage: LEAD 38; BISMUTH 37; TIN 25
  • Content Within Each Unit Package: 1/4 LB,UNIT QTY LBS
  • Thickness: 0.250 INCHES NOMINAL IN
  • Physical Form: BAR
  • Width: 0.250 INCHES NOMINAL IN
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Solder,bismuth-Lead Alloy, cataloged under National Stock Number 3439-00-239-8506, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is R & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-239-8506
Primary Part NumberSOLDER ALLOY 3037
Item NameSolder,bismuth-Lead Alloy
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerR & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc
StatusACTIVE
Length13.500 INCHES NOMINAL IN
Chemical Composition PercentageLEAD 38; BISMUTH 37; TIN 25
Content Within Each Unit Package1/4 LB,UNIT QTY LBS
Thickness0.250 INCHES NOMINAL IN
Physical FormBAR
Width0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5325-00-276-5924201-0086-000 INTERCHANGEABLE
Grommet,nonmetallic
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2805-00-338-1296 INTERCHANGEABLE
Collar,governor Thr
5340-00-489-45325AR1-2 INTERCHANGEABLE
Caster,rigid
Albion Industries, Inc.
1670-00-516-8880190-973051 INTERCHANGEABLE
Parachute,aircraft,deceleration
The Boeing Company Div Legacy Am&m
6350-01-080-6016538-1 INTERCHANGEABLE
Bell,electrical
Astronics Advanced Electronic Systems Corp. Dba Astronics Advanced Electronic Systems
4810-01-266-7152 INTERCHANGEABLE
Valve,solenoid
5950-01-361-2686G541825-1 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon Co
6625-01-379-78465381 INTERCHANGEABLE
Meter,electrical Frequency
Agilent Technologies, Inc. Div Agilent Technologies Headquarters
6110-01-435-8285005381 INTERCHANGEABLE
Panel,power Distribution
Dynalec Corporation
Cross-Reference Index
Part NumberManufacturer
SOLDER ALLOY 3037 PRIMARY R & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc (USA)
5381 Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals (USA)
BISMUTHLEAD Allen L B Co Inc (USA)
Related Parts
5325-00-276-5924INTERCHANGEABLE
GROMMET,NONMETALLIC
201-0086-000
2805-00-338-1296INTERCHANGEABLE
COLLAR,GOVERNOR THR
5340-00-489-4532INTERCHANGEABLE
CASTER,RIGID
5AR1-2
1670-00-516-8880INTERCHANGEABLE
PARACHUTE,AIRCRAFT,DECELERATION
190-973051
6350-01-080-6016INTERCHANGEABLE
BELL,ELECTRICAL
538-1
4810-01-266-7152INTERCHANGEABLE
VALVE,SOLENOID
5950-01-361-2686INTERCHANGEABLE
REACTOR
G541825-1
6625-01-379-7846INTERCHANGEABLE
METER,ELECTRICAL FREQUENCY
5381
6110-01-435-8285INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
005381

Frequently Asked Questions

What is NSN 3439-00-239-8506?

NSN 3439-00-239-8506 is a Solder,bismuth-Lead Alloy, manufactured by R & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-239-8506?

NSN 3439-00-239-8506 has 3 cross-referenced part numbers: SOLDER ALLOY 3037 (R & D Metals & Chemicals, Inc Div R & D Metals and Chemicals Inc), 5381 (Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals), BISMUTHLEAD (Allen L B Co Inc).

What NSN replaces 3439-00-239-8506?

There are 9 known substitutes for 3439-00-239-8506: 5325-00-276-5924, 2805-00-338-1296, 5340-00-489-4532 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SOLDER ALLOY 3037?

Key specifications for SOLDER ALLOY 3037: Length: 13.500 INCHES NOMINAL IN; Chemical Composition Percentage: LEAD 38; BISMUTH 37; TIN 25; Content Within Each Unit Package: 1/4 LB,UNIT QTY LBS; Thickness: 0.250 INCHES NOMINAL IN. 6 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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