These are custom low head socket cap screws we supply to an offroad automotive product manufacturer. We have a revolving blanket purchase order arrangement with next day deliveries of the parts from the individual releases. Measuring 1/4-20 X 1 to standard IFI specifications, these low head socket cap screws are made in plain grade 5 steel material with black electroplated zinc finish for corrosion resistance. A standard nylon thread locking patch is applied as the final part of the process to get the parts ready for use.