Hours Of Operations Grainger Industrial Supply California Ontario 91761 Grainger Industrial Supply Hours of Operation and Location in Ontario, CA 91761 4.4 - 46 votes 1550 S Milliken Ave, Ste A, Ontario, CA 91761 (909) 623-0746 Get Directions Grainger Industrial Supply Hours Category: Home & Garden Hours Hours may vary due to season or holiday reasons. For specific hours, please contact store directly. Map Explore OntarioView More Apparel Sam's ClubMarshallsRoss Dress for LessDd's DISCOUNTSBurlington Coat Factory Sports TargetSports AuthorityNew BalanceNikeSport Chalet Jewelry Sam's ClubMarshallsBurlington Coat FactorySaks Fifth AvenueKohl's Outlet Recommend For You Grove Market J & C Market J & J Food Market Kids Footlocker Life Style Lowe's Home Improvement Michele & Company Miller Garage Doors & Gate Mission Plaza Resources Incorporated