In the example, it is 6mm, which is the length in millimeters before reaching an inch. The number that is directly after the letter is the thread pitch. This is essential to learn as it will help you purchase the right size screw you need for your vehicle type.įirst, note the first letter in the example above is M. For instance, you might read M6 6mm x 1.0. Screws have sizing that is written differently from what many people are used to. Polished appearance What Is the Best Way to Read the Size of a Screw? Low resistance to corrosion Chrome and nickel steel Medium corrosion resistance Hasn’t got high corrosion resistance Aluminum 1/3 of the weight of steel High corrosion level Zinc-plated steel Cheap Resists most chemicals Brass and bronze Expensive 12 x ¾ universal, Subaru and zinc plated Slotted hex washer head – 6552 ¾ x ¼ universal, black zinc plated Slotted hex washer head – 1939 ¼ x 5/8 OD washer for Ford n800369-s2 Screw materials Material of the screw Pros/cons Regular steel Low rust resistanceīarely any corrosion resistance Plastic Break easily 10 x ½ stainless Slotted hex-head – 903 No.

License Plate Screw Sizes & Types Screw Type Sizing Slotted truss head – 14099 ¾ x ¼ universal zinc plated Slotted truss head- 6717 ¾ x ¼ GM, universal and black Phillips truss head – 1434 ss ¾ x ¼ stainless Slotted pan head – 12932 ¾ x ¼ GM, universal and black Phillips truss head – 1012ss No.

You must determine the right size screw that is required for your type of vehicle. In most cases, you cannot use any size screw. Over time screws can come loose and fall out, or you might have rusted and worn-out screws that need replacing. You will need to know the size of your license plate screws if you are installing them for the first time after buying a new car.

Honda license plate screws size