Bi-Fold Door Bottom Pivot 1/4" Pin D, 2-ct, Alloy Steel, Zinc Plated, Prime-Line MP6613 2-PACK The Prime-Line MP6613 bi-fold door bottom pivot provides stable, adjustable support for steel-framed closet doors in residential and light commercial applications. Constructed from alloy steel with a corrosion-resistant zinc finish, it features a 1/4" steel pin and 3/8" base diameter for secure engagement with standard track hardware. The integrated hex head bolt allows for precise vertical height adjustment to ensure smooth door operation and level alignment?critical for preventing binding or misalignment over time. Designed for doors 1" to 1-3/8" thick and up to 30 lb per panel, it installs quickly with a single 3/8" pilot hole in the door stile, requiring only basic hand tools. Features - 1/4" diameter hardened steel pivot pin ensures smooth rotation and long-term wear resistance - Zinc-plated alloy steel construction resists rust in humid closet environments - Hex head adjustment bolt enables fine-tuning of door height without disassembly - Compatible with steel-framed bi-fold doors from major wardrobe manufacturers - Bottom-mount design fits standard 3/8" diameter stile bore for retrofit or new installs - Supports door panels up to 30 lb and 1?1-3/8" thickness - Includes 2 pivots per pack for a complete pair (left/right or top/bottom pairing dependent on system) - No plastic wear components?full metal engagement for durability - Pre-assembled for immediate installation?no secondary fasteners required - Meets ANSI/BHMA A156.4 dimensional standards for door hardware Specifications - Brand Name: Prime-Line - Model Name: Prime-Line MP6613 - Part Number: MP6613 - Product Type: Bi-Fold Door Bottom Pivot - Material: Alloy Steel - Finish: Zinc Plated - Pin Diameter: 1/4 in - Base Diameter: 3/8 in - Installation Type: Screw-In (hex-adjustable) - Compatible Door Thickness: 1 ? 1-3/8 in - Max Door Weight per Panel: 30 lb - Product Dimensions: 3.25 x 0.56 x 4.00 in - Item Weight: 0.088 lb (1.41 oz) - Number of Items: 2 - Packaging Type: Blister Card - Country of Origin: China - UPC: 049793766137 - Global Trade Identification Number: 00049793766137 - Manufacturer: Prime-Line Products Product Application This bottom pivot is used by handymen, contractors, and property maintenance teams when installing or repairing steel-framed bi-fold closet doors in apartments, townhomes, and custom closets?particularly where reliable, serviceable hardware is required without costly system replacement. Its adjustability makes it ideal for correcting uneven floors or settling frames, while the robust steel construction withstands repeated opening cycles in high-traffic areas like laundry rooms or master suites. Commonly retrofitted into older Johnson, Stanley, or Anderson-style systems, the MP6613 restores smooth, quiet operation and extends door life without upgrading the entire track assembly. With no plastic bushings to wear or deform, it delivers long-term performance in humid or temperature-variable environments where lesser pivots fail prematurely.