We supplied these custom stainless steel hex standoffs to our electronics customer operating their production in New York.  18-8 stainless steel was used and the critical length dimension was set to .615" +/- .01".  #4-40 internal thread is incorporated.  Our internal part number for this item is 260-302508-001 and the lead time varies significantly depending on the quantity requested.

Large quantities of these custom stainless hex standoffs would be best supplied on a 12 month blanket purchase order basis.  The Blanket Order concept allows the customer to access the large quantity cost savings without paying upfront for the entire large quantity order. Instead we take on the burden of carrying the bulk inventory and only release the parts as needed, or often on a pre-scheduled basis provided by the customer.