Product Search › 3/8 - 18 NPTF PTP3718NPTF Image 1 of 1 3/8 - 18 NPTF PTP3718NPTF $350.00 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.