I always liked the wing shaped ones on the roadstar basses as they had an angular lock on them. I used these elliptical ones on my improvised BTB.
Planet Waves Elliptical End Pins, Black - PWEEP102 https://www.amazon.ca/dp/B005FKF2QC/ref=cm_sw_r_cp_api_i_C68BZMJA5787B0GWGQWH?_encoding=UTF8&psc=1