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

  • Hex Head Screws
    Hex Head Screws
    Type: Hot & Cold Forged
    Size: M0.6 - M100
  • Socket Head Screws
    Socket Head Screws
    Type: Hot & Cold Forged
    Size: M1.6 - M100
  • Square Head Screws
    Square Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M100
  • Flange Head Screws
    Flange Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M36
  • Button Head Screws
    Button Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Round Head Screws
    Round Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Oval Head Screws
    Oval Head Screws
    Type: Cold Forged
    Size: M3 - M16
  • Flat Head Screws
    Flat Head Screws
    Type: Cold Forged
    Size: M3 - M16
  • Truss Head Screws
    Truss Head Screws
    Type: Cold Forged
    Size: M3 - M16
  • Dome Head Screws
    Dome Head Screws
    Type: Cold Forged
    Size: M3 - M16
  • Pan Head Screws
    Pan Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Cheese Head Screws
    Cheese Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Knurled Head Thumb Screws
    Knurled Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Mushroom Head Screws
    Mushroom Head Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Fillister Head Screws
    Fillister Head Screws
    Type: Hot & Cold Forged
    Size: M5 - M10
  • T Head Screws
    T Head Screws
    Type: Cold Forged
    Size: M3 - M16
  • Countersunk Screws
    Countersunk Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Set Screws
    Set Screws
    Type: Cold Forged
    Size: M2 - M24
  • Coach Screws
    Coach Screws
    Type: Hot & Cold Forged
    Size: M3 - M16
  • Mating Screws
    Mating Screws
    Type: Hot & Cold Forged
    Size: M4 - M10
  • Wood Screws
    Wood Screws
    Type: Cold Forged
    Size: M3 - M16
  • Butterfly Screws
    Butterfly Screws
    Type: Cold Forged
    Size: M3 - M16
  • Self Drilling SMS
    Self Drilling SMS
    Type: Hot & Cold Forged
    Size: M3 - M10
  • Thread Cutting Screws
    Thread Cutting Screws
    Type: Hot & Cold Forged
    Size: M5 - M10
  • Thread Forming Screws
    Thread Forming Screws
    Type: Hot & Cold Forged
    Size: M5 - M10

Thread Types

Please click for list of thread standards.

Materials

Dimension Standards

ASTM Specifications

Coatings