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  2. Countersink - Wikipedia

    en.wikipedia.org/wiki/Countersink

    Countersink cutters are manufactured with six common angles, which are 60°, 82°, 90°, 100°, 110°, or 120°, with the two most common of those being 82° and 90°. Countersunk-head screws that follow the Unified Thread Standard very often have an 82° angle, and screws that follow the ISO standard very often have a 90° angle. Throughout ...

  3. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14.38 [1] is one of the standards. Australia utilises the Technical Drawing standards AS1100.101 (General Principals), AS1100-201 (Mechanical Engineering Drawing) and AS1100-301 (Structural ...

  4. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    Slotted countersunk head screws (with countersunk heads as specified in ISO 2009-1972) Withdrawn: DIN EN ISO 2009: ISO 2009: DIN 964: Slotted raised countersunk oval head screws: Withdrawn: DIN EN ISO 2010: ISO 2010: DIN 965: Cross recessed countersunk flat head screws: Withdrawn: DIN EN ISO 7046-1, DIN EN ISO 7046-2: ISO 7046-1, ISO 7046-2 ...

  5. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    A countersink is a conical hole cut into a manufactured object; a countersink bit (sometimes called simply countersink) is the cutter used to cut such a hole. A common use is to allow the head of a bolt or screw, with a shape exactly matching the countersunk hole, to sit flush with or below the surface of the surrounding material.

  6. File:Countersunk holes.svg - Wikipedia

    en.wikipedia.org/wiki/File:Countersunk_holes.svg

    Normal CS angle ISO Metric ... determination method or standard: SHA-1. ... 1=Diagram of the cross-sections of countersunk holes with various chamfer angles.}} ...

  7. Counterbore - Wikipedia

    en.wikipedia.org/wiki/Counterbore

    Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spotface often takes the form of a very shallow counterbore. As mentioned above, the cutters that produce counterbores are often also called counterbores; sometimes, to avoid ambiguity, the term counterbore cutter is ...

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    The Traitors host Alan Cumming picked Survivor’s Carolyn Wiger as a Traitor for season 3 along with Boston Rob Mariano, Big Brother’s Danielle Reyes and drag entertainer Bob the Drag Queen ...

  9. Engineering tolerance - Wikipedia

    en.wikipedia.org/wiki/Engineering_tolerance

    The standard (size) tolerances are divided into two categories: hole and shaft. They are labelled with a letter (capitals for holes and lowercase for shafts) and a number. For example: H7 (hole, tapped hole, or nut) and h7 (shaft or bolt). H7/h6 is a very common standard tolerance which gives a tight fit.

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