PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-S-656Head,protractor,combination Squa

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5210-00-273-1937 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-00-273-1937 — this item is cataloged by the U.S. Government under National Stock Number 5210-00-273-1937. Primary manufacturer part number: GGG-S-656.
Features
  • Head,protractor,combination Squa — FSC 5210
  • Nondefinitive Spec/std Data: 1 TYPE
  • General Characteristics Item Description: CAST IRON; BLACK WRINKLE FINISH; NON-REVERSIBLE; FOR 12 IN. COMBINATION SQUARE IN
  • 5 verified cross-references
  • Primary manufacturer: Federal Specifications Promulgated by General Services Administration Washington DC
Applications
  • Quality assurance and inspection
  • Precision measurement and calibration
  • Laboratory and test equipment
General Description

The Head,protractor,combination Squa, cataloged under National Stock Number 5210-00-273-1937, is classified within Federal Supply Class 5210 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5210-00-273-1937
Primary Part NumberGGG-S-656
Item NameHead,protractor,combination Squa
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Nondefinitive Spec/std Data1 TYPE
General Characteristics Item DescriptionCAST IRON; BLACK WRINKLE FINISH; NON-REVERSIBLE; FOR 12 IN. COMBINATION SQUARE IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
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
5210-00-450-6920599-425-1204-1 INTERCHANGEABLE
Square,combination
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
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
GGG-S-656 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-3179 TY1 General Services Administration Federal Supply Service (USA)
A-A-3179 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
05-12INCH Cooper Industries Inc Lufkin/cooper Tools Div (USA)
GGG-S-656 TY6CLA General Services Administration Federal Supply Service (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
5210-00-450-6920INTERCHANGEABLE
SQUARE,COMBINATION
599-425-1204-1
5210-00-540-3513INTERCHANGEABLE
SQUARE,COMBINATION
5210-01-657-4949INTERCHANGEABLE
SQUARE,COMBINATION
50057

Frequently Asked Questions

What is NSN 5210-00-273-1937?

NSN 5210-00-273-1937 is a Head,protractor,combination Squa, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5210 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5210-00-273-1937?

NSN 5210-00-273-1937 has 5 cross-referenced part numbers: GGG-S-656 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-3179 TY1 (General Services Administration Federal Supply Service), A-A-3179 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 05-12INCH (Cooper Industries Inc Lufkin/cooper Tools Div), GGG-S-656 TY6CLA (General Services Administration Federal Supply Service).

What NSN replaces 5210-00-273-1937?

There are 10 known substitutes for 5210-00-273-1937: 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 GGG-S-656?

Key specifications for GGG-S-656: Nondefinitive Spec/std Data: 1 TYPE; General Characteristics Item Description: CAST IRON; BLACK WRINKLE FINISH; NON-REVERSIBLE; FOR 12 IN. COMBINATION SQUARE IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5210-00-273-1937 still in active supply?

NSN 5210-00-273-1937 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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