This content requires Adobe Flash Player version
or later.
Either you do not have Adobe Flash Player installed,
or your version is too old,
or there is a problem with your Flash installation and we were unable to detect it.
• Correct sizing of tap drill for any common size machine screw tap in "NF" National Fine or "NC" National Coarse Thread
• Leaves the right amount of stock for approximately 65% full thread
• Shows correct drill body size
• 60 holes with number sizes and decimal equivalents
• Black matte finish with information steel stamped on
one side and white
marked on the reverse side for quick, clear reading
Fixed Gages Cat. No. EDP Description
198 186 187
Dimensions Thickness x Width x Length
50718 Standard Letter Size Drill Gage 5/64 " x 2-5/16" x 6-1/4" 50676 Drill and Steel Wire Gage 50677 Jobbers' Drill Gage
5/64" x 1-1/2" x 5-1/2" 5/64" x 2-5/16" x 6-1/4"
185 Time Saver Tap and Drill Gage Cat. No. EDP
Range Tap Size 185 50675 2-56 to 1/4-28 50 to 3 Dimensions
Tap Drill Body Drill Thickness x Width x Length 44 to 1/4 5/64" x 2-5/16" x 6-1/4"
186 DRILL AND STEEL WIRE GAGE
NOS. 1-60/.228-.040"
• Widely used by mechanics for twist drills and steel drill rod
• Similar to 185, without the tap and drill information
• 60 holes from 1 to 60
• Marked with number sizes and decimal equivalents
• Black matte finish with gage information steel stamped on one side and white marked on reverse for quick, clear reading
187 JOBBERS' DRILL GAGE – HARDENED
1/16-1/2"
• Quick sizing of any twist drill from 1/16-1/2" by 64ths
• 29 holes marked with drill size in inches and decimal equivalents
• Rigidly tested after hardening
• Black matte finish with gage information steel stamped on one side and white marked on reverse for quick, clear reading
198 STANDARD LETTER SIZE DRILL GAGE
A-Z .234-.413" DIA.
• Quick, convenient checking of letter size drills
• Twenty-six holes provided, giving corresponding drill sizes from "A" through "Z" with decimal equivalents from .234" diameter through .413" diameter
• Hardened with a satin finish
Check out our website for interactive features at starrett.com