Product Search › 1/2 - 28 UNEF 1TP5028 Image 1 of 1 1/2 - 28 UNEF 1TP5028 $220.00 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.