Tapping Drill Chart
This chart is printed on stiff plastisized card and is suitable for hanging on the workshop wall and to be wiped clean should it become soiled.

Listed are the comparison charts of drill and thread sizes arranged to give approximately 65% thread depth, suitable for most Model Engineering practice.

We list Fractional - Number - Letter - Decimal - and Metric Drill sizes as follow:-

Comparison
I.S.O Metric from 0.80 x .20-16mm
UNC Unified National Coarse from 1-64 - 3/4x10
UNF Unified National Fine from 0.8 - 5/8x18
BA British Association from 16 - 0
BSW British Standard Whitworth from 1/8 - 3/4x10
BSF British Standard Fine from 3/16 - 3/4x12
ME40 Model Engineering 40tpi from 1/8 - 1/2
ME32 Model Engineering 32tpi from 5/32 - 1/2
BSB British Standard Brass 26tpi from 3/16 - 5/8
BSP British Standard Pipe from 1/8 - 1/2
Price Each $2.50
Posted in mailing tube Australia $6.00
Posted in mailing tube Overseas $15.00


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