1/4-20 x 3" Stainless Steel Carriage Bolts with Hex Nuts and Flat Washers 304 Stainless Steel 18-8 Square Neck Bolts and Nuts Assortment, Full Thread, Coarse Thread, 10 Sets

• Package Contents: 10 Sets, each set includes one piece carriage bolt, hex nut and flat washer.
• Screw Length: 3 inch or 75mm (measured from under the round head, including the square neck height)
• Diameter of the screw head: 14.3-15.1mm; Height of the screw head: 3.2-3.7mm; Height of the square neck: 3.2-4mm;
• Design feature: Big round domed head designed to eliminate the need for a washer; Square neck underneath the head helps self locking.
• Made of 304 stainless steel 18-8 (no coating outside) which is superior to regular steel and any zinc plated fasteners, provides good strength and corrosion resistance in bad environments.

About Carriage Bolts Carriage bolts are desgined with a big smooth round domed head and a square neck underneath the head. The big head helps eliminate the need for a washer and the square neck is self locking to eliminate spinning and the need for a driving tool. Carriage bolts are commonly used to fasten a wooden part to either wood or metal frame. The high quality 304 stainless steel provide perfect strength and good corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance.