กกCross Recessed Countersunk Head Tapping Screws
DIN 7982
mm
Thread size 2.9 3.5 3.9 4.2 4.8 5.5 6.3
dk 5.5 6.8 7.5 8.1 9.5 10.8 12.4
k 1.7 2.1 2.3 2.5 3 3.4 3.8
CROSS
RECESS		 (Type H)m 3 4.2 4.6 4.7 5.1 6.8 7.1
(Type Z)m 2.8 4 4.2 4.4 5 6.3 7
No. 1 1 2 2 2 3 3
L 6.5-19 9.5-25 9.5-25 9.5-32 9.5-38 13-38 13-38
:90กใ
 
  กกCross Recessed Flat Countersunk Head Tapping Screws
ANSI/ASME B18.6.4 1981 IFI H-25กก(E-21) 
inches
Thread size 4 5 6 7 8 10 12 1/4
dk 0.195 0.220 0.244 0.268 0.292 0.340 0.389 0.452
k 0.067 0.075 0.083 0.091 0.100 0.116 0.132 0.153
CROSS
RECESS		 (Type 1)m 0.115 0.141 0.161 0.169 0.176 0.191 0.255 0.270
(Type 1A)m 0.115 0.141 0.161 0.169 0.176 0.191 0.255 0.270
No. 1 2 2 2 2 2 3 3
L 5/16-3/4 3/8-3/4 1/2-7/8 1/2-1 1/2-11/4 1/2-11/2 5/8-2 5/8-2
:80กใ82กใ
 
  กกCross Recessed Raised Countersunk Head Tapping Screws
DIN 7983
mm
Thread size 2.9 3.5 3.9 4.2 4.8 5.5 6.3
dk 5.5 6.8 7.5 8.1 9.5 10.8 12.4
f 0.9 1.2 1.3 1.4 1.5 1.7 2
k 1.7 2.1 2.3 2.5 3 3.4 3.8
CROSS
RECESS		 (Type H)m 3.4 4.6 4.7 4.9 5.4 7 7.4
(Type Z)m 3.1 4.3 4.4 4.6 5.1 6.6 7.1
No. 1 1 2 2 2 3 3
L 6.5-19 9.5-25 9.5-25 9.5-32 9.5-38 13-38 13-38
:90กใ
 
  กกCross Recessed Oval Countersunk Head Tapping Screws
ANSI/ASME B18.6.4 1981 IFI H-33กก(E-29)
inches
Thread size 4 5 6 7 8 10 12 1/4
dk 0.195 0.220 0.244 0.268 0.292 0.340 0.389 0.452
f+k 0.084 0.095 0.105 0.116 0.126 0.148 0.169 0.197
CROSS
RECESS		 (Type 1)m 0.123 0.145 0.165 0.170 0.179 0.196 0.257 0.277
(Type 1A)m 0.123 0.145 0.165 0.170 0.179 0.196 0.257 0.277
No. 1 2 2 2 2 2 3 3
L 5/16-3/4 3/8-3/4 1/2-7/8 1/2-1 1/2-11/4 1/2-11/2 5/8-2 5/8-2
:80กใ82กใ
 
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