Check the listing for details. 9/16”-16 Boeing Aircraft ST3M453-9-27 Double Hex 12-Point Stainless Bolts (2). Condition: New. Listed at 35.00 USD. Boeing Aircraft Double Hex 2-7/16” Long (12 Point) Stainless Steel Bolts with 9/16”-18 threads and a grip length of 1-11/16” p/n: ST3M453-9-27 in new surplus condition. Technical Characteristics ST3M453-9-27 THREAD CLASS 3A THREAD DIRECTION RIGHT-HAND THREAD LENGTH 0.725 INCHES NOMINAL FASTENER LENGTH 2.396 INCHES MIN AND 2.443 MAX HEAD STYLE DOUBLE HEXAGON HEAD HEIGHT 0.318 INCHES MIN AND 0.338 MAX WIDTH BETWEEN FLATS 0.877 INCHES MAXIMUM GRIP DIAMETER 0.5610 INCHES MIN AND 0.5615 MAX NOMINAL THREAD DIAMETER 0.562 INCHES GRIP LENGTH 1.677 INCHES MIN AND 1.697 MAX THREAD QUANTITY PER INCH 18 MINIMUM TENSILE STRENGTH 125000 POUNDS PER SQUARE INCH MATERIAL STEEL COMP XM-13 OVERALL SURFACE TREATMENT PASSIVATE OVERALL THREAD SERIES DESIGNATOR UNJF Even though it is in new condition, buyer is responsible to make sure that this part will work for their applications as there is no warranty or guarantee expressed or implied. Please Note: Shipping Charges are non-refundable. Items are subject to a 20% restocking fee, on a case to case basis. If you purchase more than one item please wait for an updated invoice with adjusted shipping charges. Thank You