hex. hd. bolt m 20 x 80-8.8, is: 1364 pt 1/2023, prevailing torque type nut m 20-8, is:7002, /2018 with punched washer a-22,,is:2016/1967 with amdt-4. specn for bolt is:1367 pt-3, /2017, nut-is:1367 pt-8/2020 and for washer is:2062/2011 with amdt-1 drawing no.
