- square countersunk head bolt
- болт с квадратной потайной головкой
English-Russian dictionary of mechanical engineering and automation. - RUSSO. B.S. Voskoboinikov, V.L. Mitrovich. 2003.
square countersunk head bolt
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patch bolt — noun : a bolt used in the repair of boilers and of ships with hulls of steel plate that has a countersunk head with a square knob which is twisted off when the bolt is screwed home … Useful english dictionary
Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… … Wikipedia
Countersink — A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the… … Wikipedia
List of screw drives — Contents 1 Common types 1.1 External types 1.1.1 Square 1.1.2 Hex … Wikipedia
Washer (hardware) — Assorted washers: flat, split, star and insulated A washer is a thin plate (typically disk shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Other uses are… … Wikipedia
