Drilling template for screw spline, Fig. # 1 – EFCO 960 Series User Manual

Page 21

PAGE 19

= SCREW SPLINE # 16 DRILL (.177 DIA.)

= SHEAR BLOCK # 21 DRILL (.159 DIA.)

= SHEAR BLOCK (.187 DIA.)

.250

.980

VERTICAL DRILLING-

HORIZONTAL DRILLING-

.500

.150

[INTERIOR]

.150

.500

1.100

2.187

.937

1.055

[EXTERIOR]

SET EDGE OF TEMPLATE FLUSH WITH GLAZING SIDE (VERT.)

KDE 16/2003

SECTION III - SCREW SPLINE FABRICATION

DRILLING TEMPLATE

FIG. # 1

CONT.

960 WALL

3/8" NOTCH TO CLEAR SHEAR BLOCK

AT THE 2 9/16" SYSTEM.

3/8" NOTCH TO CLEAR SHEAR BLOCK

AT THE 2 9/16" SYSTEM.