Manufacturing And Supply Of Single Piece Spring Inserted Reusable Seize Nut For Size M-27 L Ock Nut M 027. Specifications Of Saper Lock Nut Model No Sp27 Pitch: 3, Hn: 22, Bn:41.0, Cn: 47.3, Ln 37.5 Sn: 41.0 Materials Sts, S45C, Scm, Plating Electro Zinc Plating, Melted Zinc, Nickel, Chrome, Zinc Powder P Ating. [ Warranty Period: 30 Months After The Date Of Delivery ] ]