PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2351Solder,bismuth-Lead Alloy

Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals · NSN 3439-00-163-4346 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-163-4346 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-163-4346. Primary manufacturer part number: 2351.
Features
  • Solder,bismuth-Lead Alloy — FSC 3439
  • Chemical Composition Percentage: BISMUTH 35; LEAD 35; TIN 30
  • Width: 0.250 INCHES NOMINAL IN
  • Physical Form: BAR
  • Content Within Each Unit Package: 1/4 LB LBS
  • Chemical Composition Percentage: BISMUTH 35; LEAD 35; TIN 30
  • Length: 10.000 INCHES NOMINAL IN
  • Content Within Each Unit Package: 1/4 LB LBS
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 3439-00-163-4346, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN3439-00-163-4346
Primary Part Number2351
Item NameSolder,bismuth-Lead Alloy
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerBelmont Metals, Inc. Dba Belmont Metals Div Belmont Metals
StatusACTIVE
Chemical Composition PercentageBISMUTH 35; LEAD 35; TIN 30
Width0.250 INCHES NOMINAL IN
Physical FormBAR
Content Within Each Unit Package1/4 LB LBS
Chemical Composition PercentageBISMUTH 35; LEAD 35; TIN 30
Length10.000 INCHES NOMINAL IN
Content Within Each Unit Package1/4 LB LBS
Thickness0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5910-00-110-3184BAL1 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
American Shizuki Corp
1730-00-146-2034 INTERCHANGEABLE
Key and Streamer
4820-00-248-0527 INTERCHANGEABLE
Valve,regulating,fluid Pressure
5975-00-472-5124TC726A INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
5910-00-808-832307-02351-0A INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Ballantine Laboratories Inc
4130-01-022-13772351 INTERCHANGEABLE
Filter Element,air Conditioning
Supreme Supply Co Inc Dba Supreme Supply Co Inc
5930-01-099-5005 INTERCHANGEABLE
Switch,rotary
4140-01-132-6612 INTERCHANGEABLE
Fan,tubeaxial
5340-01-133-45332351 INTERCHANGEABLE
Standoff,threaded,spacing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5998-01-281-6942 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
2351 PRIMARY Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals (USA)
Related Parts
5910-00-110-3184INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
BAL1
1730-00-146-2034INTERCHANGEABLE
KEY AND STREAMER
4820-00-248-0527INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
5975-00-472-5124INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
TC726A
5910-00-808-8323INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
07-02351-0A
4130-01-022-1377INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
2351
5930-01-099-5005INTERCHANGEABLE
SWITCH,ROTARY
4140-01-132-6612INTERCHANGEABLE
FAN,TUBEAXIAL
5340-01-133-4533INTERCHANGEABLE
STANDOFF,THREADED,SPACING
2351
5998-01-281-6942INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5315-01-301-8715INTERCHANGEABLE
PIN,REAR
2815-01-329-8553INTERCHANGEABLE
RING SET,PISTON
772351

Frequently Asked Questions

What is NSN 3439-00-163-4346?

NSN 3439-00-163-4346 is a Solder,bismuth-Lead Alloy, manufactured by Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-163-4346?

NSN 3439-00-163-4346 has 1 cross-referenced part number: 2351 (Belmont Metals, Inc. Dba Belmont Metals Div Belmont Metals).

What NSN replaces 3439-00-163-4346?

There are 12 known substitutes for 3439-00-163-4346: 5910-00-110-3184, 1730-00-146-2034, 4820-00-248-0527 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2351?

Key specifications for 2351: Chemical Composition Percentage: BISMUTH 35; LEAD 35; TIN 30; Width: 0.250 INCHES NOMINAL IN; Physical Form: BAR; Content Within Each Unit Package: 1/4 LB LBS. 8 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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