Sash Clip, Metal Bracket, 3/4 x 9/32 x 3/8" Tall, # 13 or 31

Metal Sash Clip for  3/8 Inch Non-Tilt Window Spiral Tube Balance Rod with cross pin

Length: 1 inch long 
Width: 9/32 inch
Height: 3/8 inch  
Number Stamped in Bracket: #332 or 13