Specification Sheet

Sockets
265
Bo d y a n d Gr i p le n G t H S o F Fl a t He a d So c k e t ca p Sc r e w S
ASME B18.3-2003
Nominal Size
4 5 6 8 10 1/4
L
T
MIN.
.750 .750 .750 .875 .875 1.000
L
TT
MAX
0.99 1.00 1.05 1.19 1.27 1.50
Nominal
Length
Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h
1.25
0.50 0.38 0.50 0.38 0.50 0.34 0.38 0.22
1.50
0.50 0.38 0.50 0.38 0.50 0.34 0.38 0.22 0.62 0.42
1.75
1.00 0.88 1.00 0.88 1.00 0.84 0.88 0.72 0.62 0.42 0.75 0.50
2.00
1.00 0.88 1.00 0.88 1.00 0.84 0.88 0.72 1.12 0.92 0.75 0.50
2.50
1.50 1.34 1.38 1.22 1.62 1.42 1.25 1.00
3.00
1.88 1.72 2.12 1.92 1.75 1.50
3.50
2.62 2.42 2.25 2.00
Nominal Size
5/16 3/8 7/16 1/2 5/8 3/4
L
T
MIN.
1.125 1.250 1.375 1.500 1.750 2.000
L
TT
MAX
1.71 1.94 2.17 2.38 2.82 3.25
Nominal
Length
Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h Lg h Lb h
2.00 0.88 0.60
2.25 0.88 0.60 1.00 0.69
2.50 1.38 1.10 1.00 0.69 1.12 0.77 1.00 0.62
3.00 1.88 1.60 1.50 1.19 1.62 1.27 1.00 0.62
3.50 2.38 2.10 2.00 1.69 2.12 1.77 1.75 1.36 1.50 1.04 1.50 1.00
4.00 2.88 2.60 2.50 2.19 2.62 2.27 2.50 2.12 2.25 1.80 1.50 1.00
4.50 3.38 3.10 3.00 2.69 3.12 2.77 2.50 2.12 2.25 1.80 2.50 2.00
5.00 3.88 3.60 3.50 3.19 3.62 3.27 3.25 2.86 3.00 2.54 2.50 2.00
5.50 4.38 4.10 4.00 3.69 4.12 3.77 4.00 3.62 3.75 3.30 3.50 3.00
6.00 4.88 4.60 4.50 4.19
4.62 4.27 4.00 3.62 3.75 3.30 3.50 3.00
L
LT
LBH
LGH
LTT
Flat Head
Socket Cap Screws
Body & Grip
Lengths
For screws of nominal lengths longer than those for which L
GH
and L
BH
values tabulated in this table and for screws
over 1 inch in diameter, the miximum grip gaging length L
GH
and the minimum body length L
BH
of the screws shall be
determined as follows:
L
GH
= L - L
T
L
BH
= L - L
TT
where L = nominal length, L
T
= minimum thread length, and L
TT
= maximum total thread length.