PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C434-12-4RSquare,combination

L.s. Starrett Company (the) Div Tool Division · NSN 5210-00-450-6920 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-00-450-6920 — this item is cataloged by the U.S. Government under National Stock Number 5210-00-450-6920. Primary manufacturer part number: C434-12-4R.
Features
  • Square,combination — FSC 5210
  • Protractor Head: INCLUDED
  • Center Head: INCLUDED
  • Square/miter Head Hardness Designation: HARDENED
  • Square/miter Head Scriber: INCLUDED
  • Square/miter Head Level Quantity: 1
  • Level: INCLUDED
  • Material: STEEL SQUARE/MITER HEAD
Applications
  • Applications requiring Steel Square/miter Head construction
General Description

The Square,combination, cataloged under National Stock Number 5210-00-450-6920, is classified within Federal Supply Class 5210 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is L.s. Starrett Company (the) Div Tool Division. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5210-00-450-6920
Primary Part NumberC434-12-4R
Item NameSquare,combination
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerL.s. Starrett Company (the) Div Tool Division
StatusACTIVE
Protractor HeadINCLUDED
Center HeadINCLUDED
Square/miter Head Hardness DesignationHARDENED
Square/miter Head ScriberINCLUDED
Square/miter Head Level Quantity1
LevelINCLUDED
MaterialSTEEL SQUARE/MITER HEAD
Nondefinitive Spec/std Data1 TYPE
ReversibilityREVERSIBLE
Blade TypeGROOVED
Blade Length12.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5210-00-078-8944 INTERCHANGEABLE
Square,combination
5210-00-078-8947 INTERCHANGEABLE
Square,combination
5210-00-078-8948 INTERCHANGEABLE
Square,combination
5210-00-078-8949 INTERCHANGEABLE
Square,combination
5210-00-078-8950 INTERCHANGEABLE
Square,combination
5210-00-221-2068 INTERCHANGEABLE
Square,combination
5210-00-224-9937 INTERCHANGEABLE
Square,combination
5210-00-273-1937 INTERCHANGEABLE
Head,protractor,combination Squa
5210-00-540-3513 INTERCHANGEABLE
Square,combination
5210-01-657-494950057 INTERCHANGEABLE
Square,combination
L.s. Starrett Company (the) Div Tool Division
Cross-Reference Index
Part NumberManufacturer
C434-12-4R Henchman Products Pty Ltd (AUS)
C434-12-4R PRIMARY L.s. Starrett Company (the) Div Tool Division (USA)
433-12-4R L.s. Starrett Company (the) Div Tool Division (USA)
C434-12-4R Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
GGG-S-656 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-3179 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
599-425-1204-1 PRIMARY Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa (USA)
GGG-S-656 TY6CLA General Services Administration Federal Supply Service (USA)
A-A-3179 TY1 General Services Administration Federal Supply Service (USA)
26-4412-0197 S-T Industries, Inc. (USA)
26-4412-01 S-T Industries, Inc. (USA)
Related Parts
5210-00-078-8944INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-078-8947INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-078-8948INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-078-8949INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-078-8950INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-221-2068INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-224-9937INTERCHANGEABLE
SQUARE,COMBINATION
5210-00-273-1937INTERCHANGEABLE
HEAD,PROTRACTOR,COMBINATION SQUA
5210-00-540-3513INTERCHANGEABLE
SQUARE,COMBINATION
5210-01-657-4949INTERCHANGEABLE
SQUARE,COMBINATION
50057

Frequently Asked Questions

What is NSN 5210-00-450-6920?

NSN 5210-00-450-6920 is a Square,combination, manufactured by L.s. Starrett Company (the) Div Tool Division, classified under FSC 5210 (No Item Name Available). Status: active.

What are the part numbers for NSN 5210-00-450-6920?

NSN 5210-00-450-6920 has 11 cross-referenced part numbers: C434-12-4R (Henchman Products Pty Ltd), C434-12-4R (L.s. Starrett Company (the) Div Tool Division), 433-12-4R (L.s. Starrett Company (the) Div Tool Division), C434-12-4R (Henchman Group Pty Ltd the Trustee for Henchman Unit Trust), GGG-S-656 (Federal Specifications Promulgated by General Services Administration Washington DC) and 6 more.

What NSN replaces 5210-00-450-6920?

There are 10 known substitutes for 5210-00-450-6920: 5210-00-078-8944, 5210-00-078-8947, 5210-00-078-8948 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C434-12-4R?

Key specifications for C434-12-4R: Protractor Head: INCLUDED; Center Head: INCLUDED; Square/miter Head Hardness Designation: HARDENED; Special Features: BLADE TYPE - POLISHED OR CHROME. 12 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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