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.
Request Information
Unit of Measure
Items
Dual Spaced Thread (DST®) Fasteners

2 Millimeter (mm) Reference Minimum Diameter (mO) Dual Spaced Thread (DST®) Fastener
Dual Spaced Thread (DST®) Fasteners

2.3 Millimeter (mm) Reference Minimum Diameter (mO) Dual Spaced Thread (DST®) Fastener
Dual Spaced Thread (DST®) Fasteners

2.4 Millimeter (mm) Reference Minimum Diameter (mO) Dual Spaced Thread (DST®) Fastener
Dual Spaced Thread (DST®) Fasteners

2.6 Millimeter (mm) Reference Minimum Diameter (mO) Dual Spaced Thread (DST®) Fastener
Dual Spaced Thread (DST®) Fasteners

2.9 Millimeter (mm) Reference Minimum Diameter (mO) Dual Spaced Thread (DST®) Fastener
Description N/A 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.
Type N/A Threaded
Screw Size N/A 3.5 mm N/A 4 mm N/A 4.2 mm N/A 4.8 mm N/A 5.3 mm
High Thread Diameter (HO) N/A 3.43 to 3.68 mm N/A 3.76 to 4.01 mm N/A 4.06 to 4.32 mm N/A 4.70 to 4.95 mm N/A 5.03 to 5.33 mm
Low Thread Diameter (LO) N/A 2.74 mm N/A 3.3 mm N/A 3.3 mm N/A 3.68 mm N/A 3.81 mm
Reference Minimum Diameter (mO) N/A 2 mm N/A 2.3 mm N/A 2.4 mm N/A 2.6 mm N/A 2.9 mm
Thread Pitch Size (P) N/A 1.34 mm N/A 1.34 mm N/A 1.41 mm N/A 1.59 mm N/A 1.59 mm
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 N/A These parts are available in all Standard Cold-Headed materials.
Product Catalog