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National
Steel and nylon. Brass-plated finish on steel parts. Designed to ensure smooth operation of bi-fold doors. Guide rollers stay in the track and adjust to door frames that are not square.
Monster Fastener Zinc Plated Steel Coarse Full Thread Hex Head Tap Bolts
Monster Fastener Zinc Plated Steel Concrete Wedge Stud Anchor Bolts
Monster Fastener Galvanized Grade 2 / A307 Carriage Bolts
Monster Fastener Zinc Plated Steel Phillips Flat Head Wood Screws
Monster Fastener Hot Dip Galvanized Grade 2 Steel USS Flat Washers
