Gaskets, there are many types: flat, spring, floral, and so on.Its biggest use is to increase the force surface,
protect the fastener to prevent nut loose!Diffusing pressure and preventing surface scratches.
1. Nut washer has no Ra3.2 and deburring requirements.
2. Suitable for medium assembly series, grade A for fine assembly series.
3. Gb848-85 is mainly used for screws with cylindrical head, others for standard hexagon bolts, screws and nuts.
4. Mechanical properties of materials: steel 200HV;Austenitic stainless steel A200.
5. Marking example: Standard series, nominal size D =8mm, performance grade 200HV, plain washer without surface treatment: washer GB97.1 -- 85 8 200HV
