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They have a Phillips pan head with a high-low thread design
including fastening metal to metal or metal to wood
High Collar Split Lock Washers are designed to prevent nuts and bolts from loosening due to vibration or movement
This 1/2-13 x 3 1/4 inch carriage bolt is made of 18-8 stainless steel for excellent corrosion resistance
The screw is 4-20 x 5/16 inches in size
B1/2-13 x 1 1/2 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR FPU They have a Phillips panB1 2 13 x 1 1 2 MS90728 is an Alloy Steel B1821 Coarse Cap Screw. It is manufactured in accordance with ASTM A354BD standards and has a zinc yellow DFAR finish. The screw has a diameter of 1 2 inch, a length of 1 1 2 inches, and a thread pitch of 13 threads per inch. It is designed for use in high strength applications and is commonly used in the aerospace, automotive, and construction industries.
