Product Search › 1-1/4 - 20 UN 1TP1.2520 Image 1 of 1 1-1/4 - 20 UN 1TP1.2520 $440.00 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.