Often, the head of factory wheels bolts protrudes past than the surface of a wheel spacer and so they cannot be used to mount the spacer on. Spacer bolts can be used for this purpose instead as with a low profile head they can sit below the surface of the spacer
Specifications:
- Threads/Pitch size: 14 x 1.25
- 17 mm Hex head
- 6 mm Hex height
- 9 mm Taper height
- 28 mm Thread length
- 43 mm Overall Length (as a low-profile)
- Forged 60° wide seat
- 10.9 Grade Steel
Note: with these low profile bolts, they are perfectly suitable for spacer 20mm or thicker. For 15mm thick spacer, the hex head will protrude out the surface by 2 mm- 3 mm. So if you have or buying 15mm spacer, please consult with the professional first about clearance issue before purchasing.