Glvaner (6 Sets) 3/8-16 x 5-1/2" Stainless Steel Carriage Bolts Screws Black and Hex Nuts & Flat Washers Black, Round Head Square Neck, 304 Stainless Steel 18-8, Full Thread Coverage

Glvaner (6 Sets) 3/8-16 x 5-1/2" Stainless Steel Carriage Bolts Screws Black and Hex Nuts & Flat Washers Black, Round Head Square Neck, 304 Stainless Steel 18-8, Full Thread Coverage

• Package Includes: 6 Pcs Carriage Bolts (3/8-16 x 5-1/2") + 6 Pcs Hex Nuts (3/8"-16)+ 6 Pcs 3/8" Inside Diameter Flat Washers
• Thread Size: 3/8-16; Thread Pitch: 16 TPI; Thread Type: Coarse Thread
• Material: 304 Stainless Steel (A2-70) with durable black coating; Provides enhanced strength and superior corrosion resistance compared to standard stainless steel or zinc-plated fasteners; Features smooth, burr-free surfaces with scratch-resistant protection during handling and installation; Maintains a uniform industrial-grade black finish for professional applications
• Bolt head diameter: 0.84 inch (21mm); Bolt head height: 0.2 inch (5.2mm); Bolt length (including the square neck): 5-1/2 inch (140mm)
• Carriage bolts feature a domed head with integrated square neck; The square neck mechanically locks into square receiver holes, preventing rotation; The polished dome head creates a semi-recessed installation profile, blending functional grip security with reduced surface protrusion for enhanced safety in woodworking, structural connections, and agricultural equipment applications