Product Search › 13/16 - 20 UNEF 1TP8120 Image 1 of 1 13/16 - 20 UNEF 1TP8120 $200.00 Part identification and A, B, C, and D dimensions listed within the product selection. Dimension reference image below. Quantity: Add To Cart Added! Part identification and A, B, C, and D dimensions listed within the product selection. Dimension reference image below.