These are other 4-40 custom slotted flat machine screws we supply to our long time customer, typically in small batches of 50-100 pieces per order. They are 3/8 in length and are manufactured in the United States using Copper 110 material. Material certs are provided with each shipment and blanket purchase order arrangements are always doable. Lead times on smaller order volumes can be very competitive at sometimes as little as one week. Larger volume requires significantly longer lead times for the initial release, typically at 5-7 weeks from placement of order if the parts are to be manufactured in the USA.
