M20-2.5 x 140 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox 1 1/8-7 NE The 1/4-20 thread size means

The 1/4-20 thread size means that the bolt has a diameter of 1/4 inch and 20 threads per inch

These 6-20 x 3/4 Unslotted Indent Hex Washer Self Drill Screws are made of durable 18-8 stainless steel

This 1/4-20 hex jam nut is made of durable zinc-plated steel for excellent corrosion resistance

It has a pan head with a 6-lobe drive and a length of 1 1/4 inches

The split lock washer helps to keep the screw in place by preventing it from loosening

M20-2.5 x 140 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox 1 1/8-7 NE The 1/4-20 thread size meansThe M20 2. 5 x 140 Metric Socket Head Cap Screw Class 12. 9 ISO 4762 Black Ox is a high strength, corrosion resistant fastener designed for demanding applications. It features a hexagonal socket head for easy driving and a black oxide finish for added durability. The screw is made of alloy steel and heat treated to a tensile strength of 12. 9, making it suitable for use in high stress environments. The M20 thread size and 140mm length provide a secure