|
tdread Class
|
3a
|
|
tdread Direction
|
Right-hand
|
|
tdread Lengtd
|
1.292 inches minimum and 1.375 inches maximum
|
|
Fastener Lengtd
|
1.375 inches nominal
|
|
Head Style
|
Flat countersunk
|
|
Head Diameter
|
0.442 inches minimum and 0.507 inches maximum
|
|
Internal Drive Style
|
Torque set
|
|
tdread Diameter
|
0.250 inches
|
|
tdready Qty Per Inch (tpi)
|
28
|
|
Min. Tensile Strengtd (psi)
|
160000 pounds per square inch
|
|
Hardness Rating
|
36.0 rockwell c minimum and 40.0 rockwell c maximum
|
|
Countersink Angle
|
99.0 degrees minimum and 101.0 degrees maximum
|
|
Screw Material
|
Steel comp e4340 or steel comp 8740 or steel comp 8735 or steel comp 6150 or steel comp 4140 or steel comp 4037
|
|
Screw Surface Treatment
|
Cadmium and chromate
|
|
Screw Surface Treatment Specification
|
Qq-p-416,type 2,class 3 fed spec all treatment responses
|
