FULLY THREADED STUD BOLTS B7 WITH TWO HEX.NUT 2H 1-1/8 X 8 Qty:80 THREAD = UNC UP TO 1 IN , 8-UNS ABOVE 1 IN BOLT THEREAD FIT 2A , NUT THREAD FIT 2B STUDS TO BS1506(SUPERCEDES FROM BS1750 ) GR.B7 FOR BOLTS GR.2H FOR NUT B7 & 2H TO BE STAMPED FOR USE AT PRESS OVER 250PSI AND TEMP -50 TO 900 DEG.F