PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SN50BS 1LBSolder,lead-Tin Alloy

American Society for Testing and Materials Dba Astm International · NSN 3439-00-163-4347 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-163-4347 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-163-4347. Primary manufacturer part number: SN50BS 1LB.
Features
  • Solder,lead-Tin Alloy — FSC 3439
  • Content Within Each Unit Package: 1 LB LBS
  • Physical Form: BAR
  • Chemical Composition Percentage: TIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED
  • Chemical Composition Percentage: TIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED
  • Content Within Each Unit Package: 1 LB LBS
  • 7 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 3439-00-163-4347, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3439-00-163-4347
Primary Part NumberSN50BS 1LB
Item NameSolder,lead-Tin Alloy
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusCANCELLED
Content Within Each Unit Package1 LB LBS
Physical FormBAR
Chemical Composition PercentageTIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED
Chemical Composition PercentageTIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED
Content Within Each Unit Package1 LB LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5910-00-174-5120 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5345-00-247-595861463686490 INTERCHANGEABLE
Stone,sharpening
Saint-Gobain Abrasives Inc
6135-00-347-0595 INTERCHANGEABLE
Battery,nonrechargeable
5340-00-498-0395SC-B-34446 INTERCHANGEABLE
Handle,manual Control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5905-00-552-4240 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
1377-00-729-6562 INTERCHANGEABLE
Initiator,cartridge Actuated
6135-00-816-3708 INTERCHANGEABLE
Battery,nonrechargeable
6635-01-073-0086M-30 INTERCHANGEABLE
Fluorescent Penetrant Inspection
Brent America, Inc
6625-01-248-90384001380 INTERCHANGEABLE
Multimeter
Illinois Tool Works Inc Dba Simco
4810-01-436-33489HD569 INTERCHANGEABLE
Actuator,hydraulic-Pneumatic,rot
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
QQ-S-571 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
M30 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
QQS571SN50 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
SN50PB50BS 1LB Federal Specifications Promulgated by General Services Administration Washington DC (USA)
ASTM B32 American Society for Testing and Materials Dba Astm International (USA)
SN50BS 1LB Federal Specifications Promulgated by General Services Administration Washington DC (USA)
SN50BS 1LB PRIMARY American Society for Testing and Materials Dba Astm International (USA)
Related Parts
5910-00-174-5120INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5345-00-247-5958INTERCHANGEABLE
STONE,SHARPENING
61463686490
6135-00-347-0595INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5340-00-498-0395INTERCHANGEABLE
HANDLE,MANUAL CONTROL
SC-B-34446
5905-00-552-4240INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
1377-00-729-6562INTERCHANGEABLE
INITIATOR,CARTRIDGE ACTUATED
6135-00-816-3708INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
6635-01-073-0086INTERCHANGEABLE
FLUORESCENT PENETRANT INSPECTION
M-30
6625-01-248-9038INTERCHANGEABLE
MULTIMETER
4001380
4810-01-436-3348INTERCHANGEABLE
ACTUATOR,HYDRAULIC-PNEUMATIC,ROT
9HD569
4235-01-441-2666INTERCHANGEABLE
SORBENT,OIL
7910-01-540-3246INTERCHANGEABLE
POLISHER-SCRUBBER-VACUUM,FLOOR,E

Frequently Asked Questions

What is NSN 3439-00-163-4347?

NSN 3439-00-163-4347 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: cancelled.

What are the part numbers for NSN 3439-00-163-4347?

NSN 3439-00-163-4347 has 7 cross-referenced part numbers: QQ-S-571 (Federal Specifications Promulgated by General Services Administration Washington DC), M30 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), QQS571SN50 (Federal Specifications Promulgated by General Services Administration Washington DC), SN50PB50BS 1LB (Federal Specifications Promulgated by General Services Administration Washington DC), ASTM B32 (American Society for Testing and Materials Dba Astm International) and 2 more.

What NSN replaces 3439-00-163-4347?

There are 12 known substitutes for 3439-00-163-4347: 5910-00-174-5120, 5345-00-247-5958, 6135-00-347-0595 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SN50BS 1LB?

Key specifications for SN50BS 1LB: Content Within Each Unit Package: 1 LB LBS; Physical Form: BAR; Chemical Composition Percentage: TIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED; Chemical Composition Percentage: TIN 51.5,LEAD 47.535,ANTIMONY 0.5,BISMUTH 0.25,COPPER 0.08,ARSENIC 0.025,IRON 0.02,ALUMINUM 0.005,ZINC 0.005,REMAINDER NOT SPECIFIED. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3439-00-163-4347 still in active supply?

NSN 3439-00-163-4347 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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