supply of light weight spanner for fish plate bolt.light weight spanner for fish plate bolt.,light weight spanner for fish plate bolts as per following specification: (1) double open ended with 1 5 degree angle (2) size 36mm and 41mm at either end. (3) length 680mm (min) 760mm(max). (4) manufacture d by forging process with black hosphate finishing (5) heat treatment with controlled oil hath process. hardness o f final product 380-400 bhn (6) approx weight 1300 gm-5% (7) capacity to habndle 500 nm torque without brea kage special spanner fish plate bolts conforming to jus-4835 or similar. [ warranty period: 30 months after the date of delivery ]