This steel banjo bolt has 1/4 BSP threads (0.51" x 19 tpi) to fit unusual applications such as vintage Lucas fuel injection systems.
The shank is 1.05" (27mm) long overall, and the 0.55" unthreaded portion matches our 6AN Male to 14mm Banjo Adapter (Part No. 3265-49, sold separately). The 0.73" OD sealing surface under the head is large enough to fit the 14mm Aluminum Crush Washers (Part No. 3278-M14, sold separately in packs of 5). The 3/4" hex measures 0.26" thick including the shoulder. Sold individually.