Each Sea-Dog Stainless Turnbuckle is made from AISI 316 stainless steel and features an electropolished bright finish at no additional cost. All thread sizes and wire rope sizes now conform to U.S. standards and are interchangeable with most other U.S. manufacturers. Note: Part Number 185105 has 5 mm metric threads. General: - Turnbuckles should be lubricated before their first use and regularly thereafter. - Turnbuckles should regularly be rinsed with fresh water - End fittings should be checked to ensure uninhibited universal movement - Turnbuckles should also be inspected regularly for signs of damage such as bent terminals or cracking at thread roots, particularly at the end of thread.