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Threaded Shank Drills

Stubby Series

Short Series

Long Series

 

   

High Speed Steel Threaded Shank Drills
High speed steel drills are for drilling general to medium duty, low tensile strength materials in confined areas.
Drills are manufactured to NAS 965 Type B construction with 135° P-3 split points.

Features
• Type B threaded hex shank
• HSS Adaptor drill - NAS 965
• 1/4-28 UNF Class 2A thread
• Surface treated-steam oxide

Cobalt Threaded Shank Drills
Cobalt drills are for drilling hard, tough, high tensile strength materials in confined areas.
Drills are manufactured to NAS 965 Type D construction with 135° P-9 split points.

Features
• Type D threaded square shank cobalt adaptor
• Drill - NAS 965
• 1/4-28 UNF Class 2A thread
• Surface threated-steam oxide


Drill Type
Part Number Prefix
Stub
Short
Long
High Speed Steel
111
211
311
Cobalt
152
252
352
 
Drill Size
Series
A
C
D
#40 to 1/8” .98 to .125
Stub
1/8”
1/2”
5/16”
Short
1/4”
1”
9/16”
Long
1/4”
2-1/8”
7/8”
#30 to #10 .1285 to .1935
Stub
1/8”
9/16”
5/16”
Short
1/4”
1-1/4”
9/16”
Long
1/4”
2-1/8”
1-1/8”
#9 to F .1960 to .2570
Stub
1/4”
5/8”
5/16”
Short
5/16”
1-1/4”
9/16”
Long
5/16”
2-1/8”
1-1/8”
Drilling Tools