EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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Dual Spaced Thread fasteners, or DST®, allow increased thread engagement in softer thermoplastics with their high thread height and wide thread spacing. This also increases resistance to pull-out and improves product performance.

They are available in sizes ranging from #2 to 5/16 (M2.50 to M8.0), in pan, hex, flat, oval, and hex washer head styles, with point styles available of blunt, gimlet or pilot.
Unit of Measure

Specifications

Type

 N/A Threaded

Screw Size

 N/A 4.2 mm

High Thread Diameter (HO)

 N/A 4.06 to 4.32 mm

Low Thread Diameter (LO)

 N/A 3.3 mm

Reference Minimum Diameter (mO)

 N/A 2.4 mm

Thread Pitch Size (P)

 N/A 1.41 mm

Features and Benefits

Features and Benefits

 N/A
  • Allows use of smaller bosses
  • Increased resistance to pull-out
  • High thread with a 30º flank angle reduces radial stress in the boss
  • Smaller minor diameter than standard screws allows greater shear area
  • Shank slot for thread-cutting can be added

Note

Note

 N/A These parts are available in all Standard Cold-Headed materials.