Design "L" is most common used design of DIN 2510 stud bolts. Thread tollerance acc. DIN 2510 part 2 (or on request 6g) We produce also non standard design and material combination. Stud Bolts with reduced shank. Rolled threads. DIN 2510 Schraubenbolzen, Dehnschrauben DIN 2510 DIN 2510 Schraubenbolzen mit Dehnschaft DIN 2510-L