High grade OEM standard wheel studs for trailers caravan hubs etc... This listing is for a pack of 20 replacement wheel studs. Ideal for replacing damaged, rusty or broken wheel studs. 7/16" UNF Threads. Dimensions; (see image) A - Spline diameter 13mm B - Spline depth 15mm C - Thread length 23mm D - 7/16" Thread Size Before fitting it is essential that you check the new part is identical to the original part. If in doubt consult a professional.