supply of inter lock washer suitable for m 16 hexinter lock washer suitable for m 16 hex,inter lock washer suitable for m 16 hex socket head cap screw . note-1. zinc flake coating (geomet 321 or equivalent) with top coat, without any hexavalent chromium, without any integrated or separately added lubricant. minimum salt spray test life of 1000 hours is to be ensured. 2 . interlock washers shall be coated or plated with environment friendly coating. 3. inter lock washers sh all be procured as pair glued together to fasten as such. 4 inter lock washer shall be of make type: nor d lock only. special condition : suitable packing to be done to prevent damage during tran sit, unloading and rust prevention during storage. [ warranty period: 30 months after the date of delivery ] ]