Product Search › 1-3/8 - 12 UNF 1TP1.3712 Image 1 of 1 1-3/8 - 12 UNF 1TP1.3712 $420.00 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.