PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

558102Wrench Spanner

Stewart-Warner Corporation · NSN 5120-00-544-3943 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-544-3943 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-544-3943. Primary manufacturer part number: 558102.
Features
  • Wrench Spanner — FSC 5120
  • 1 verified cross-reference
  • Primary manufacturer: Stewart-Warner Corporation
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Wrench Spanner, cataloged under National Stock Number 5120-00-544-3943, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Stewart-Warner Corporation. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameWrench Spanner
FSC / FSG5120 — No Item Name Available (FSG 51)
ManufacturersStewart-Warner Corporation (CAGE 57733)
Technical Specifications
ParameterValue
NSN5120-00-544-3943
Primary Part Number558102
Item NameWrench Spanner
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerStewart-Warner Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2520-00-871-6772114-8202A INTERCHANGEABLE
Spider,universal Joint,vehicular
Rockford Powertrain Inc Div Powertrain Rockford, Inc.
6685-01-568-41645581-02 INTERCHANGEABLE
Indicator,temperature,thermocoup
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
558102 PRIMARY Stewart-Warner Corporation (USA)
Related Parts
2520-00-871-6772INTERCHANGEABLE
SPIDER,UNIVERSAL JOINT,VEHICULAR
114-8202A
6685-01-568-4164INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
5581-02

Frequently Asked Questions

What is NSN 5120-00-544-3943?

NSN 5120-00-544-3943 is a Wrench Spanner, manufactured by Stewart-Warner Corporation, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-544-3943?

NSN 5120-00-544-3943 has 1 cross-referenced part number: 558102 (Stewart-Warner Corporation).

What NSN replaces 5120-00-544-3943?

There are 2 known substitutes for 5120-00-544-3943: 2520-00-871-6772, 6685-01-568-4164. Verify interchangeability with system specifications before substitution.

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