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Screws (Fasteners)

Screws are also male threaded fasteners mostly related and clearly undistinguished from bolts. While bolts mate with corresponding nuts, screws do not need any mating fasteners. Unlike bolts, screws need not have plain non-threaded shank. Screws may have tapered threads so as to facilitate succession into the female component.

Screws must always be turned to assembly the joint. Unlike bolts, screws are often smaller diameter fasteners which are produced in cold forged condition. Large diameter screws can be produced economically from bar stock or can be hot forged, followed by machining and threading.

Types of Industrial Screws

  • Hex Head Screws
    Hex Head Screws
  • Socket Head Screws
    Socket Head Screws
  • Square Head Screws
    Square Head Screws
  • Flange Head Screws
    Flange Head Screws
  • Button Head Screws
    Button Head Screws
  • Round Head Screws
    Round Head Screws
  • Oval Head Screws
    Oval Head Screws
  • Hammer Head Screws
    Hammer Head
  • Flat Head Screws
    Flat Head Screws
  • Truss Head Screws
    Truss Head Screws
  • Dome Head Screws
    Dome Head Screws
  • Pan Head Screws
    Pan Head Screws
  • Cheese Head Screws
    Cheese Head Screws
  • Knurled Head Thumb Screws
    Knurled Head
  • Mushroom Head Screws
    Mushroom Head
  • Fillister Head Screws
    Fillister Head
  • T Head Screws
    T Head Screws
  • Countersunk Screws
    Countersunk Screws
  • Set Screws
    Set Screws
  • Coach Screws
    Coach Screws
  • Mating Screws
    Mating Screws
  • Wood Screws
    Wood Screws
  • Butterfly Screws
    Butterfly Screws
  • Self Drilling SMS
    Self Drilling SMS
  • Thread Cutting Screws
    Thread Cutting
  • Thread Forming Screws
    Thread Forming
  • Thumb Screws
    Thumb Screws

Thread Types

Please click for list of thread standards.

Materials

Dimension Standards

ASTM Specifications

Coatings