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Technical Data Sheet
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C493B — PROTRACTOR,MECHANICS,PLAIN

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

C493B: PROTRACTOR,MECHANICS,PLAIN.

The PROTRACTOR,MECHANICS,PLAIN is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5210-01-268-3419, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
C493B
NSN: 5210-01-268-3419
FSC: 5210 — Measuring Tools, Craftsmen's
CAGE: 57163 — L.S. STARRETT COMPANY (THE) DIV TOOL DIVISION (USA)
SPECIFICATIONS
general_characteristics_item_descriptionRECTANGULAR HEAD; DOUBLE GRADUATED FROM 0 TO 180 DEG; 6 IN. BLADE (GRADUATED IN 32NDS AND 64THS FOR DEPTH MEASURING); SATIN CHROME FINISH; WITH BLADE LOCKNUT IN
NSN5210-01-268-3419
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PROTRACTOR,MECHANICS,PLAIN TITLE COMPONENT PN C493B MFR PROTRACTOR,MECHANICS,P
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: RECTANGULAR HEAD; DOUBLE GRADUATED FROM 0 TO 180 DEG; 6 IN. BLADE (GRADUATED IN 32NDS AND 64THS FOR DEPTH MEASURING); SATIN CHROME FINISH; WITH BLADE LOCKNUT IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONRECTANGULAR HEAD; DOUBLE GRADUATED FROM 0 TO 180 DEG; 6 IN. BLADE (GRADUATED IN 32NDS AND 64THS FOR DEPTH MEASURING); SATIN CHROME FINISH; WITH BLADE LOCKNUT IN
SUBSTITUTES & CROSS-REFERENCES 1
52534Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C493B?
C493B is a PROTRACTOR,MECHANICS,PLAIN.
What parts can replace C493B?
There is 1 known substitute for C493B: 52534. Substitute compatibility should be verified for your specific system.
What is the NSN for C493B?
C493B is cataloged in the U.S. Government catalog under NSN 5210-01-268-3419. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.