Recommended Drill & Tap Data

                            Unified Coarse Threads

       Screw Size

 

     Tap Drill

Clearance Holes 

        Free Fit

Number

Decimal

 

Drill Size

Decimal

Drill Size

 Decimal

xcs#1-64

   .073

 

#54

  .055

 #46

     .081

#2-56

   .086

 

#51

  .067

 #41

     .096

#3-48

   .099

 

#48

  .076

 #36

     .105

#4-40

   .112

 

#44

  .086

 #31

     .128

#5-40

   .125

 

#39

  .099

 #29

     .136

#6-32

   .138

 

#36

  .106

 #25

     .149

#8-32

   .164

 

#30

  .128

 #16

     .177

#10-24

   .190

 

#25

  .149

 #7

     .201

1/4-20

   .250

 

#7

  .201

17/64

     .265

5/16-18

   .312

 

  F

  .257

21/64

     .328

3/8-16

   .375

 

5/16

  .312

25/64

     .390

                              

 Unified Fine Threads

Number

Decimal

 

Drill Size

Decimal

Drill Size

Decimal

000-120

   .034

 

#71

  .026

#62

    .039

#00-96

   .047

 

#62

  .038

#55

    .052

xcs#0-80

   .060

 

#56

  .046

#51

    .067

#1-72

   .073

 

#54

  .055

#46

    .081

#2-64

   .086

 

#50

  .070

#41

    .096

#3-48

   .099

 

#47

  .078

#36

    .105

#4-48

   .112

 

#42

  .093

#30

    .128

#5-44

   .125

 

#37

  .104

#29

    .136

#6-40

   .138

 

#34

  .111

#25

    .149

#8-36

   .164

 

#29

  .136

#16

    .177

#10-32

   .190

 

#21

  .159

#7

    .201

1/4-28

   .250

 

#3

  .213

17/64

    .265

5/16-24

   .312

 

   I

  .272

21/64

    .328

3/8-24

   .375

 

21/64

  .332

25/64

    .390

 

             Xtended Camera Support, Inc.  -  phone 805-531-0014  -  www.xcsinc.com