Peachtree Ariel casement hinge screw to attach arm to jamb /sill. There is a Sleeve that fits under the hinge arm that allows the hinge to move when window is open and closed.

Head: Low Profile Pan Head, Phillips (Truss Head - extra wide and slightly rounded head)
Size: # 10
Length: 3/4 inch
Thread: Coarse
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Related Parts:
35180400 - Sleeve for hinge screw