PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15549Solder,indium,preform

Indium Corp of America · NSN 3439-01-205-0261 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-205-0261 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-205-0261. Primary manufacturer part number: 15549.
Features
  • Solder,indium,preform — FSC 3439
  • Precious Material and Weight: 0.050 SILVER OUNCES, TROY
  • Precious Material: SILVER
  • General Characteristics Item Description: CHEMICAL COMPOSITION PCT; INDIUM 80; LEAD 15; SILVER 5; RING SHAPED; 0.205 TO 0.235 IN. OD; 0.150 TO 0.165 IN. ID; 0.025 TO 0.035 IN. THK IN
  • Precious Material and Location: INTEGRAL SILVER
  • 3 verified cross-references
  • Primary manufacturer: Indium Corp of America
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Solder,indium,preform, cataloged under National Stock Number 3439-01-205-0261, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Indium Corp of America. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN3439-01-205-0261
Primary Part Number15549
Item NameSolder,indium,preform
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerIndium Corp of America
StatusACTIVE
Precious Material and Weight0.050 SILVER OUNCES, TROY
Precious MaterialSILVER
General Characteristics Item DescriptionCHEMICAL COMPOSITION PCT; INDIUM 80; LEAD 15; SILVER 5; RING SHAPED; 0.205 TO 0.235 IN. OD; 0.150 TO 0.165 IN. ID; 0.025 TO 0.035 IN. THK IN
Precious Material and LocationINTEGRAL SILVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
2930-00-139-439315549 INTERCHANGEABLE
Radiator,engine Coolant
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
5950-00-224-448015-549 INTERCHANGEABLE
Transformer,radio Frequency
Entron Industries Limited Partnership Dba Entron Industries Property Div
5960-00-264-3004 INTERCHANGEABLE
Shield,electron Tube
5330-00-502-0301 INTERCHANGEABLE
Seal
5310-00-752-771715549 INTERCHANGEABLE
Washer,flat
Mitsubishi Caterpillar Forklift America, Inc
5930-00-761-3331 INTERCHANGEABLE
Switch,sensitive
2540-01-062-1928 INTERCHANGEABLE
Seat,vehicular
2840-01-136-93342181572 INTERCHANGEABLE
Blade Set,turbine,aircraft Gas T
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
6070-01-717-451715549 INTERCHANGEABLE
Cleaning Tool,fiber Optic Connec
Us Conec Ltd (inc)
Cross-Reference Index
Part NumberManufacturer
15549 PRIMARY Indium Corp of America (USA)
669-002-9002 Honeywell International Inc. Div Aerospace - Torrance (USA)
218-157-2 Indium Corp of America (USA)
Related Parts
2930-00-139-4393INTERCHANGEABLE
RADIATOR,ENGINE COOLANT
15549
5950-00-224-4480INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
15-549
5960-00-264-3004INTERCHANGEABLE
SHIELD,ELECTRON TUBE
5330-00-502-0301INTERCHANGEABLE
SEAL
5310-00-752-7717INTERCHANGEABLE
WASHER,FLAT
15549
5930-00-761-3331INTERCHANGEABLE
SWITCH,SENSITIVE
2540-01-062-1928INTERCHANGEABLE
SEAT,VEHICULAR
2840-01-136-9334INTERCHANGEABLE
BLADE SET,TURBINE,AIRCRAFT GAS T
2181572
6070-01-717-4517INTERCHANGEABLE
CLEANING TOOL,FIBER OPTIC CONNEC
15549

Frequently Asked Questions

What is NSN 3439-01-205-0261?

NSN 3439-01-205-0261 is a Solder,indium,preform, manufactured by Indium Corp of America, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-205-0261?

NSN 3439-01-205-0261 has 3 cross-referenced part numbers: 15549 (Indium Corp of America), 669-002-9002 (Honeywell International Inc. Div Aerospace - Torrance), 218-157-2 (Indium Corp of America).

What NSN replaces 3439-01-205-0261?

There are 9 known substitutes for 3439-01-205-0261: 2930-00-139-4393, 5950-00-224-4480, 5960-00-264-3004 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15549?

Key specifications for 15549: Precious Material and Weight: 0.050 SILVER OUNCES, TROY; Precious Material: SILVER; General Characteristics Item Description: CHEMICAL COMPOSITION PCT; INDIUM 80; LEAD 15; SILVER 5; RING SHAPED; 0.205 TO 0.235 IN. OD; 0.150 TO 0.165 IN. ID; 0.025 TO 0.035 IN. THK IN; Precious Material and Location: INTEGRAL SILVER. 4 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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