Metric Screws

Metric Screws

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Metric Screws
AALL AMERICAN Fasteners offers a wide variety of quality metric screws and SEMS® suitable for all applications.

The screw, long considered one of the world’s simple machines, is a solid cylinder wrapped with a helical plane.  To form a mechanical joint with a screw, the helical plane, referred to as the screw thread, rotates through a hole in the materials being joined following or creating mating threads in the material.  Unlike bolts, screws are not used with a nut, generally speaking.  

Metric screws are available in many sizes with different drive and head styles and thread pitches which vary depending on the joining material, method of installation and desired end result.

Metric Machine Screws:

  • Cheese Head Phillips® – ISO 7048
  • Cheese Head Slotted – DIN 84 A / ISO 1207
  • Flat Phillips Countersunk – DIN 965 / ISO 7046
  • Flat slotted Countersunk – DIN 963 / ISO 2009
  • Pan Phillips – DIN 7985 A / ISO 7045
  • Pan Phillips Collar – DIN 967
  • Pan Slotted – DIN 85 A / ISO 1580
  • Oval Phillips Countersunk – DIN 966 / ISO 7047
  • Oval slotted Countersunk – DIN 964 / ISO 2010
  • Six -Lobe
    • Button Head – ISO 7380-1
    • Button Flange – ISO 7380-2
    • Flat Head Countersunk – ISO 14581
    • Flat Low Head (not countersunk)
    • Pan Head – ISO 14583
    • Socket Head – ISO 14580
  • Truss Slotted

Self-Tapping Metric Screws:

  • Hex Head – DIN 7976 C / ISO 1479
  • Pan Head
    • Slotted – DIN 7971 C / DIN 7971 F / ISO 1481
    • Six-Lobe – ISO 14585 C
    • Phillips – DIN 7981 C / DIN 7981 F / ISO 7049
    • Phillips with Collar – DIN 968 C
  • Flat Countersunk
    • Six-Lobe – ISO 14586 C
    • Slotted – DIN 7972 C / DIN 7972 F / ISO 1482
    • Phillips – DIN 7982 C / DIN 7982 F / ISO 7050
  • Oval Countersunk
    • Slotted – DIN 7973 C / ISO 1483
    • Phillips – DIN 7983 C / ISO 7051
Self-Drilling Screws:
  • Hex Head Washer – DIN 7504 K / ISO 15480
  • Flat Phillips Countersunk – DIN 7504 P / ISO 15482
  • Pan Phillips – DIN 7504 N / ISO 15481
  • Pan Head Eight-Lobe – DIN 7504
  • Oval Phillips Countersunk – DIN 7504 / ISO 15483

Thread Cutting Metric Screws:

  • Cheese Head Slotted – DIN 7513 B
  • Hex Head – DIN 7513 A
  • Hex and Slotted – DIN 7513
  • Flat Phillips Countersunk – DIN 7516 D
  • Oval Phillips Countersunk – DIN 7516 E
  • Pan Phillips – DIN 7516 A

Thread Forming – Trilobular:

  • Cheese Head – DIN 7500
  • Pan Phillips – DIN 7500 1 (DIN 7500 C)
  • Hex Head Washer – DIN 7500 1 (DIN 7500 D)
  • Hex Head – DIN 7500 1 (DIN 7500 E)
  • Flat Phillips Countersunk – DIN 7500 1 (DIN 7500 M)
  • Six-Lobe – DIN 7500 1

Thread Forming Metric Screws for Plastics

  • Flat Phillips Countersunk
  • Flat Six-Lobe Countersunk
  • Round Washer Phillips
  • Round Washer Six-Lobe
  • Pan Phillips
  • Pan Six-Lobe

Metric Wood Screws

  • Flat Phillips Countersunk – DIN 7997
  • Flat Slotted Countersunk – DIN 97
  • Hex Head – DIN 571
  • Oval Phillips Countersunk – DIN 7995
  • Oval Slotted Countersunk – DIN 95
  • Pan Phillips – DIN 7996
  • Round Slotted – DIN 96
Some screws have the ability to create mating threads as they are installed.  Self-tapping screws typically have threads down to the end or point of the screw and often require a pilot hole.  As they are installed, the self-tapping screw creates mating threads in the material.  Self-drilling screws on the other hand, do not require pre-drilled pilot holes as the tips are formed to drill the hole as they are installed.  The drilling tip is slightly smaller than the threads enabling the screw threads to form mating threads in the material.

SEMS Screw Assemblies

There are also screw assemblies referred to as SEMS®, which have a free-spinning washer or washers permanently attached under the screw head.  SEMS save time during assembly and afford the same benefits as non-attached washers such as distributing load, acting as a spacer, reducing vibration and acting as a protective barrier.

SEMS are available in a variety of materials, finishes, sizes, head and drive styles and in numerous washer combinations.  Let our specialist help you find the right SEMS for your application.

Contact AALL AMERICAN Fasteners for metric scews today

Please contact our Certified Fastener Specialists to review your metric screw product requirements at 877-791-4426 or send your Request For Quote to us directly.
 


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