You must mount Type 27A cutting-off wheels between flanges that are:

(1) Flat (unrelieved) with matching bearing surfaces;

(2) At least one-quarter the wheel diameter.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050. WSR 15-23-086, § 296-807-18065, filed 11/17/15, effective 12/18/15. Statutory Authority: RCW 49.17.010, [49.17].040, [49.17].050, and [49.17].060. WSR 03-09-009, § 296-807-18065, filed 4/4/03, effective 8/1/03.]

PDFWAC 296-807-18065

Use specific flanges for Type 27A cutting-off wheels.