You must: • Mount Type 27A cutting-off wheels between flanges that are:
– Flat (unrelieved) with matching bearing surfaces
– At least one-quarter the wheel diameter.
[Statutory Authority: RCW 49.17.010, [49.17].040,[49.17].050 , and [49.17].060. 03-09-009, § 296-807-18065, filed 4/4/03, effective 8/1/03.]