1 3/32 7/64 5/16 1/4 1/16 5/16 1/16 3/32 7/16 NRC-U-6689 2 1/4 3/8 1 5/8 3/8 1 * 3/8 1 NRC-U-6690 3 7/32 5/32 17/32 1/2 3/16 11/16 1/32** 3/16 1-7/32 NRC-U-6691 4 25/64 35/ 128 15/16 5/8 3/8 * 3/8 3/4 NRC-U-6692 5 13/32 17/64 15/16 3/4 3/8 1-1/8 1/32 9/32 1-5/16 NRC-U-6693 6 1/2 3/8 1-1/4 1/2 1/2 1 1/8 1/4 1-1/4 NRC-U-6694 7 1/2 9/32 1-1/16 5/8 3/8 1 * 3/8 3/4 NRC-U-6695 8 3/4 3/8 1-1/2 5/8 1/2 1-1/8 1/8 1/4 1-5/8 NRC-U-6696 9 3/4 1/2 1-3/4 1 1/2 1-1/2 * 1/2 1-3/4 NRC-U-6697 10 1-3/16 1/2 2-3/16 1-1/4 1/2 1-3/4 * 1/2 1-1/4 NRC-U-6698