PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

406-6543Wrench,spanner

General Services Administration Federal Supply Service · NSN 5120-00-406-6543 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-406-6543 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-406-6543. Primary manufacturer part number: 406-6543.
Features
  • Wrench,spanner — FSC 5120
  • Opening Diameter: 2.750 INCHES NOMINAL IN
  • Lug Width: 0.375 INCHES NOMINAL IN
  • Lug Thickness: 0.375 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • 2 verified cross-references
  • Primary manufacturer: General Services Administration Federal Supply Service
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,spanner, cataloged under National Stock Number 5120-00-406-6543, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-406-6543
Primary Part Number406-6543
Item NameWrench,spanner
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusACTIVE
Opening Diameter2.750 INCHES NOMINAL IN
Lug Width0.375 INCHES NOMINAL IN
Lug Thickness0.375 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-337-1429BSG54-1 INTERCHANGEABLE
Screw,adjusting
Johnson Controls Inc Control Products Div
5307-00-467-99813315342REVAPC181 INTERCHANGEABLE
Stud,plain
Naval Ship Systems Command
5330-00-650-2797 INTERCHANGEABLE
Gasket
3040-01-096-5547 INTERCHANGEABLE
Connecting Link,rigid
1680-01-152-4294 INTERCHANGEABLE
Angle,seat
6520-01-270-597420181 INTERCHANGEABLE
Resin,restorative,dental
Kerr Corporation
1680-01-681-6912UH60-PMI2-2018 INTERCHANGEABLE
Insulation Blanket,cabin,aircraf
Kenjer Industries
Cross-Reference Index
Part NumberManufacturer
20181 Genisco Technology Corporation (USA)
406-6543 PRIMARY General Services Administration Federal Supply Service (USA)
Related Parts
5305-00-337-1429INTERCHANGEABLE
SCREW,ADJUSTING
BSG54-1
5307-00-467-9981INTERCHANGEABLE
STUD,PLAIN
3315342REVAPC181
5330-00-650-2797INTERCHANGEABLE
GASKET
3040-01-096-5547INTERCHANGEABLE
CONNECTING LINK,RIGID
1680-01-152-4294INTERCHANGEABLE
ANGLE,SEAT
6520-01-270-5974INTERCHANGEABLE
RESIN,RESTORATIVE,DENTAL
20181
1680-01-681-6912INTERCHANGEABLE
INSULATION BLANKET,CABIN,AIRCRAF
UH60-PMI2-2018

Frequently Asked Questions

What is NSN 5120-00-406-6543?

NSN 5120-00-406-6543 is a Wrench,spanner, manufactured by General Services Administration Federal Supply Service, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-406-6543?

NSN 5120-00-406-6543 has 2 cross-referenced part numbers: 20181 (Genisco Technology Corporation), 406-6543 (General Services Administration Federal Supply Service).

What NSN replaces 5120-00-406-6543?

There are 7 known substitutes for 5120-00-406-6543: 5305-00-337-1429, 5307-00-467-9981, 5330-00-650-2797 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 406-6543?

Key specifications for 406-6543: Opening Diameter: 2.750 INCHES NOMINAL IN; Lug Width: 0.375 INCHES NOMINAL IN; Overall Length: 8.500 INCHES NOMINAL IN; Lug Thickness: 0.375 INCHES NOMINAL IN. 5 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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