• 5/16" - 18 x 1"
• Grade 8
• With lock washers
• Set of 6
  

Return Policy: Merchandise may be returned for exchange or refund within 30 days of sale. A 25% restocking fee will be applied to all refunds. Shipping is not refunded. Returned items must be in like-new condition and in original packaging in same condition as received. Piston rings, Bearings, Gasket sets and other skin-packaged items must be unopened in same condition as received. Electrical, special order, modified or installed items non returnable. No returns after 30 days of sale of merchandise. Buyer pays all handling and shipping costs.