You coulnd also just use a clip and make a loop around what ever you want to attach it to. They have ones you bolt on. http://www.eriggingsupply.com/eshop/list.ASP?ct_lcode=4&ct_mcode=17&ct_scode=72&ct_sub=0
Cannot rember exactly what they are called but I have seen "cleats" that have a bit of extra grip and spring specifically for steel cable. Check sailing stores. http://www.p2marine.com/catalog/product_info.php?products_id=4065&gclid=CMT_ibftq8ACFQQT7AodGTUAOw