Cobalt Bits |

Heavy duty construction made to Type J aircraft specifications
Used for drilling holes in hard, tough materials such as stainless steel, titanium, high temperature and high strength alloys
High red hardness of cobalt permits speeds 30% greater than HSS drills

Part No.	Size	Flute Length	Overall Length
500A104	1-1/16"	7/8"	1-7/8"
500A105	5/64"	1"	2"
500A106	3/32"	1-1/4"	2-1/4"
500A107	7/64"	1-1/2"	2-5/8"
500A108	1/8"	1-5/8"	2-3/4"
500A109	9/64"	1-3/4"	2-7/8"
500A110	5/32"	2"	3-1/8"
500A111	11/64"	2-1/8"	3-1/4"
500A112	3/16"	2-5/16"	3-1/2"
500A113	13/64"	2-7/16"	3-5/8"
500A114	7/32"	2-1/2"	3-3/4"
500A115	15/64"	2-5/8"	3-7/8"
500A116	1/4"	2-3/4"	4"
500A117	17/64"	2-7/8"	4-1/8"
500A118	9/32"	2-15/16"	4-1/4"
500A119	19/64"	3-1/16"	4-3/8"
500A120	5/16"	3-3/16"	4-1/2"
500A121	21/64"	3-5/16"	4-5/8"
500A122	11/32"	3-7/16"	4-3/4"
500A123	23/64"	3-1/2"	4-7/8"
500A124	3/8"	3-5/8"	5"
500A125	25/64"	3-3/4"	5-1/8"
500A126	13/32"	3-7/8"	5-1/4"
500A127	27/64"	3-15/16"	5-3/8"
500A128	7/16"	4-1/16"	5-1/2"
500A129	29/64"	3-15/16"	5-5/8"
500A130	15/32"	4-5/16"	5-3/4"
500A131	31/64"	4-3/8"	5-7/8"
500A132	1/2"	4-1/2"	6"

General purpose flute design
All sizes have a 1/2″ by 2-1/4″ long shank
The maximum overall length is 6″ and the flute length is 3″
Short drill bits in the larger sizes are well suited to use in portable electric drills equipped with 1/2″ chucks
Highly effective in tough, high tensile strength materials
118° split point reduces thrust and eliminates walking at the drill point

Part No.	Size	Flute Length	Overall Length
1000C134	17/32"	3"	6"
1000C136	9/16"	3"	6"
1000C140	5/8"	3"	6"
1000C142	21/32"	3"	6"
1000C144	11/16"	3"	6"
1000C146	23/32"	3"	6"
1000C148	3/4"	3"	6"
1000C149	49/64"	3"	6"
1000C150	25/32"	3"	6"
1000C152	13/16"	3"	6"
1000C154	27/32"	3"	6"
1000C156	7/8"	3"	6"
1000C160	15/16"	3"	6"
1000C164	1"	3"	6"

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