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THINK!- MARYLAND METRICS - The One-Stop Source For Metric And British Sized Fasteners, Wrenches, Cutting, & Measuring Tools, Metal Shapes, Oil Seals, O-Rings, Mechanical Power Transmission Equipment, Bearings, Hydraulic And Pneumatic Fittings & Tubing, Workholding Components, Plumbing Fittings, & Some Electrical & Electronic Components. Click to go to Maryland Metrics home page

Maryland Metrics Technical Data Chart:
Method of Indicating Surface Finish to DIN ISO 1302


Click for additional information on DIN 1302

Graphical symbol of surface finish to DIN 3141 Roughness values, Ra, for permissible waviness height, Rt
Assignation according to DIN 3141
line 1 line 2
Meaning according to ISO 1302
(surface without graphical symbol)
Surfaces which do not need to meet specific requirements
               even
Surfaces which only have to meet requirements of general evenness and better appearance
              rough
Individual raw surfaces which may be remachined
Clean raw surface with higher requirements
Surface with a roughness value which must not exceed the highest permissible medium roughness value

all dimensions in mm

Click for additional information on DIN 1302

THINK!- MARYLAND METRICS - The One-Stop Source For Metric And British Sized Fasteners, Wrenches, Cutting, & Measuring Tools, Metal Shapes, Oil Seals, O-Rings, Mechanical Power Transmission Equipment, Bearings, Hydraulic And Pneumatic Fittings & Tubing, Workholding Components, Plumbing Fittings, & Some Electrical & Electronic Components. Click to go to Maryland Metrics home page


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