Thread Class:

2a

Thread Direction:

Right-hand

Thread Length:

0.339 inches minimum and 0.375 inches maximum

Fastener Length:

0.375 inches nominal

Head Style:

Flat countersunk

Head Diameter:

0.150 inches minimum and 0.172 inches maximum

Internal Drive Style:

Cross recess type 1

Thread Diameter:

0.086 inches

Thready Qty Per Inch (tpi):

56

Min. Tensile Strength (psi):

55000 pounds per square inch

Countersink Angle:

80.0 degrees minimum and 82.0 degrees maximum

Screw Material:

Copper alloy

Screw Material Specification:

Qq-b-613 fed spec single material response or qq-b-626 fed spec single material response or qq-w-321 fed spec single material response

Thread Series Designator:

Unc