Supply Of Set Of Single Piece Spring Inserted Reusable Nut & Nut Protection Device. Specification Of Nut Are Pitch : 2.5 Hn:16.0 Bn:30.0 Cn: 34.6 Ln:28.8 Sn:30.0. Material: Sts, S45c, Scm, Plating Electro Zinc Plating, Melted Zinc, Nickel, Chrome, Zinc Power Plating. And Specification Of Protection Device Is Protection Device: Ms.seamless Pipe Od 50mm X Id 42mm Long One Side Reverse Threads 10 Mm Long. Star 5 Sides Shaped Groove Nut 50mm Dia X 10 Mm Thick. One Set Includes 04 Nos Of Spring Inserted Reusable Nut & 04 Nos Of Nut Protection Device. Note: Tenderer Must Enclose Nas3350 Vibration Test For Nut Along With Tender.