: Industrial Division Manufacturing and Distribution of specialty washers, brand name HEICO-LOCK, a two-piece serrated washer also known as a wedge lock washer that meets the requirements of DIN 25201-4. : Upholstery Division Manufacturing and Distribution of Upholstery Supply Items. This includes Upholstery and Furniture Nails, Decorative Nails, Metal Tackstrip, Elastic Webbing, Hook & Loop, Furniture Glides, Nail Guns.