Part Number HW-20-15-G-D-320-SM-A Board To Board Board Spacers Stackers in stock with ready to ship. Get an instant quote for Samtec Inc part number HW-20-15-G-D-320-SM-A by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for HW-20-15-G-D-320-SM-A. Our dedicated account manager will get back to you within 15 minutes.