Product Search › 1-3/8 - 16 UN 1TP1.3716 Image 1 of 1 1-3/8 - 16 UN 1TP1.3716 $500.00 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.