Product Search › 2 - 56 UNC HTP0256 Image 1 of 1 2 - 56 UNC HTP0256 $155.00 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.