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Description / Abstract:
This Standard covers the complete general, dimensional, and
performance requirements for the various types of slotted and
recessed head metric tapping screws recognized as standard. Also
included are appendices that provide specifications and
instructions for protrusion gaging of flat countersunk head screws,
across-corners gaging of hex head screws, and penetration and
wobble gaging of recessed head screws. The appendices in this
Standard also provide clearance hole size and approximate
installation hole size recommendations.
The inclusion of dimensional data in this Standard is not
intended to imply that all of the products described are stock
production sizes. Consumers should consult with manufacturers
concerning the availability of products. The recommended
diameter-length combinations applicable to metric tapping screws
are shown in Table 22.