... )302HQ,303CU,303F`` 2)enduse of fastener manufacturing. Specifications:1) Steel grades: 302HQ, 304HC, 304HCM, 316C, 305J1, 410, 420, 430, etc ... chiefly on production of stainless steel aixs and hardwares.Cold griding bar,cold drawn bar Stainless steel ground bar with bright-oil surface