PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B422Expander,spark Plug

Stanley Engineered Fastening Llc · NSN 5120-00-142-7549 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-142-7549 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-142-7549. Primary manufacturer part number: B422.
Features
  • Expander,spark Plug — FSC 5120
  • 1 verified cross-reference
  • Primary manufacturer: Stanley Engineered Fastening Llc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Expander,spark Plug, cataloged under National Stock Number 5120-00-142-7549, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Stanley Engineered Fastening Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameExpander,spark Plug
FSC / FSG5120 — No Item Name Available (FSG 51)
ManufacturersStanley Engineered Fastening Llc (CAGE 01556)
Technical Specifications
ParameterValue
NSN5120-00-142-7549
Primary Part NumberB422
Item NameExpander,spark Plug
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerStanley Engineered Fastening Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3030-00-180-2102 INTERCHANGEABLE
Belts,v,matched Set
3455-00-517-555602100 INTERCHANGEABLE
Cutter,milling,side
Niagara Cutter Inc
6685-00-531-2736 INTERCHANGEABLE
Transmitter,temperature,electric
5998-01-463-9982B422 INTERCHANGEABLE
Circuit Card Assembly
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
B422 Stanley Engineered Fastening Llc (USA)
Related Parts
3030-00-180-2102INTERCHANGEABLE
BELTS,V,MATCHED SET
3455-00-517-5556INTERCHANGEABLE
CUTTER,MILLING,SIDE
02100
6685-00-531-2736INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
5998-01-463-9982INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
B422

Frequently Asked Questions

What is NSN 5120-00-142-7549?

NSN 5120-00-142-7549 is a Expander,spark Plug, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-142-7549?

NSN 5120-00-142-7549 has 1 cross-referenced part number: B422 (Stanley Engineered Fastening Llc).

What NSN replaces 5120-00-142-7549?

There are 4 known substitutes for 5120-00-142-7549: 3030-00-180-2102, 3455-00-517-5556, 6685-00-531-2736 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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