String Book - Logan Oil Tools

120°
KeLLy croSS-Section DimenSionS
D
C
A
120°
thREE-SIDED kELLy
BAASh-RoSS tRI-kELLy ® — thREE-SIDED kELLy
Max. Bore gL to Flat Flat Width o.D.
Size A B C D
3-1/2 1-3/4 1-3/4 1-7/8 3-31/32
4-1/4 2-1/4 2-1/8 2-17/64 4-13/16
5-1/4 3-1/4 2-5/8 2-27/32 5-31/32
6 4 3 3-15/64 6-13/16
ApI nom. Max. Across
SQuARE kELLyS
Across
Size Bore A Flats B Corner C Radius R Radius Rc *
2-1/2 1-1/4 2-1/2 3-9/32 5/16 1-5/8
3 1-3/4 3 3-15/16 3/8 1-15/16
3-1/2 2-1/4 3-1/2 4-17/32 1/2 2-7/32
4-1/4 2-3/4 4-1/4 5-9/16 1/2 2-3/4
5-1/4 3-1/2 5-1/4 6-29/32 5/8 3-3/8
6 ** 3-1/2 6 7-7/8 3/4 …
* Corner configuration at manufacturer’s option
** 6" square not API
hEXAgonAL kELLyS
ApI Max. Across Across
Std. Size Alternate Bore A Flats B Corner C Radius R Radius Rc *
3 … 1-1/2 3 3-3/8 1/4 1-11/16
3-1/2 … 1-3/4 3-1/2 3-31/32 1/4 1-31/32
… 3-1/2 2-1/4 3-3/4 4-1/4 5/16 …
4-1/4 … 2-1/4 4-1/4 4 13/16 5/16 2-25/64
… 4-1/2 2-1/4 4-27/32 5-1/2 5/16 …
5-1/4 … 3-1/4 5-14 5-31/32 3/8 2- 61/64
… 5-916 4 5-31/32 6-3/4 3/8 …
6 … 4 6 6-13/16 3/8 3-13/32
… 6-5/8 4-1/4 6-27/32 7-3/4 1/2 …
* Corner configuration at manufacturer’s option
B
R C
R
B
A
C
SQuARE kELLy
R C
C
A
R
B
hEXAgonAL kELLy
0