Standard Ground Thread Tap Dimensions


Nominal Diameter Range (inches)
Machine
Screw
Size
Number

Nominal
Fractional
Diamete
r(inches)

Nominal
Metric
Diameter
(mm)
Style
Tap Dimensions (inches)
Over
Through
Overrall Length 
A
Thread Length 
B
Square Length 
C
Shank Diameter D
Size of Square
E
.052 .065 0 1/16 M1.6 1 1-5/8 5/16 3/16 .141 .110
.065 .078 1 - M1.8 1 1-11/16 3/8 3/16 .141 .110
.078 .091 2 - M2,M2.2 1 1-3/4 7/16 3/16 .141 .110
.091 .104 3 3/32 M2.5 1 1-13/16 1/2 3/16 .141 .110
.104 .117 4 - - 1 1-7/8 9/16 3/16 .141 .110
.117 .130 5 1/8 M3, M3.15 1 1-15/16 5/8 3/16 .141 .110
.130 .145 6 - M3.5 1 2 11/16 3/16 .141 .110
.145 .171 8 5/32 M4 1 2-1/8 3/4 1/4 .168 .131
.171 .197 10 3/16 M4.5, M5 1 2-3/8 7/8 1/4 .194 .152
.197 .223 12 7/32 - 1 2-3/8 15/16 9/32 .220 .165
.223 .260 14 1/4 M6, M6.3 2 2-1/2 1 5/16 .255 .191
.260 .323 - 5/16 M7, M8 2 2-23/32 1-1/8 3/8 .318 .238
.323 .395 - 3/8 M10 2 2-15/16 1-1/4 7/16 .381 .286
.395 .448 - 7/16 - 3 3-5/32 1-7/16 13/32 .323 .242
.448 .510 - 1/2 M12,M12.5 3 3-3/8 1-21/32 7/16 .367 .275
.510 .573 - 9/16 M14 3 3-19/32 1-21/32 1/2 .429 .322
.573 .635 - 5/8 M16 3 3-13/16 1-13/16 9/16 .480 .360
.635 .709 - 11/16 M18 3 4-1/32 1-13/16 5/8 .542 .406
.709 .760 - 3/4 - 3 4-1/4 2 11/16 .590 .442
 

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Monday - Friday

Contact:

B.E.E. Industrial Supply, Inc.
beeind.com
Email: beeind@pacbell.net
Phone: (510) 293-3180
Fax: (510) 293-3190
25634 Nickel Place
Hayward, California 94545-3222
USA

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