CARBIDE TIPPED COUNTERBORES INDEX AND COMPARISON CHART
ALL TYPES FOR INTERCHANGEABLE PILOTS

DESCRIPTION HANNIBAL CLEV-
ELAND 		ECLIPSE GREEN-
FIELD/
RTW 		METCUT MORSE UNION
FRAC.
PAGE 		METRIC
PAGE 		TOOL
TYPE
AIRCRAFT COUNTERBORES
3 Flutes (Similar to Craig 850 Series) 124   522            
STRAIGHT SHANK COUNTERBORES
4 Flutes 118 119 512            
3 - 4 Flutes 118 119 514 779   SSC   5779 5470
3 - 4 Flutes- For Steels 122 123 510     FAC      
TAPER SHANK COUNTERBORES
4 Flutes 120 121 518            
3 - 4 Flutes 120 121 516 778   TSC   5780 5471
3 - 4 Flutes- For Steels 122 123 511     TAC      
STUB LENGTH COUNTERBORES
Pin Drive- For Non-Ferrous & Cast Irons 125   573   412   200    
Pin Drive- For Steels 125   574            
Stub Taper- For Non-Ferrous & Cast Irons 126   575   427   210    
Stub Taper- For Steels 126   576            
Radial Drive- For Non-Ferrous & Cast Irons 127   577   402   220    
Radial Drive- For steels 127   578            
PILOTS
Short Shank 117   500 Yes   Yes 410 776 4704
Long Threaded Shank 117   525       400