JIS B 1012
Cross recesses for screws
English
1986
0.000
Detailed Information
This Japanese Industrial Standard specifies the shape, dimensions and measuring method for cross recesses formed on the heads of machine screws, wood screws, tapping screws and the like, hereinafter referred to as the “cross recess”.
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CHROMIUM/ZINC CORROSION PROTECTIVE COATINGS FOR FASTENERS
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Cross Recessed Countersunk (Oval) Head Screws (Countersunk Heads according to ISO)
Normally these screws are made in the sizes for which weight details are given. If the screws are to be supplied with captive washer components, the designation must be augmented according to [...]