Request a Custom Part
Click image to enlarge

Tri-Lobular Thread Forming Screws for Plastic Applications

Tri-Lobular thread-forming screws are special fasteners designed for use in plastic materials. They feature a unique three-lobed design that displaces plastic material rather than cutting it. As the screw is driven into a plastic surface, the plastic conforms around the screws’ threads, locking the screw in place. This design creates a firm hold that resists vibration while preserving the integrity of the plastic material.
At Empire Bolt & Screw, we’re a leading national supplier of Tri-Lobular thread-forming screws for plastic assemblies. We offer a variety of head styles, drive types, and material options. Whatever your application, you can rely on Empire for superior-quality thread-forming screws.

Order Tri-Lobular Thread Forming Screws in Bulk or Custom Quantities Today

Browse the selection below to find the Tri-Lobular thread-forming screws that meet your specifications. With fast turnaround, competitive pricing, nationwide shipping, and helpful service, Empire Bolt & Screw is your one-stop source for tri-lobular thread-forming screws.
Need assistance? Contact us for technical support or to request a quote.
 
Model Product Size Plate Head Pkg Qty  
T HW619.14Z #6-19 x 1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.516SS #6-19 x 5/16" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.516SS410 #6-19 x 5/16" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.516BO #6-19 x 5/16" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.516Z #6-19 x 5/16" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.38SS #6-19 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.38SS410 #6-19 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.38BO #6-19 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.38Z #6-19 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.12SS #6-19 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.12SS410 #6-19 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.12BO #6-19 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.12Z #6-19 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.58SS #6-19 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.58SS410 #6-19 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.58BO #6-19 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.58Z #6-19 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.34SS #6-19 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.34SS410 #6-19 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.34BO #6-19 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.34Z #6-19 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.1SS #6-19 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.1SS410 #6-19 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.1BO #6-19 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.1Z #6-19 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW619.114SS #6-19 x 1-1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #6-19 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.114SS410 #6-19 x 1-1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #6-19 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW619.114BO #6-19 x 1-1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #6-19 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW619.114Z #6-19 x 1-1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #6-19 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.38SS #8-16 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.38SS410 #8-16 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #8-16 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.38BO #8-16 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #8-16 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW816.38Z #8-16 x 3/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #8-16 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.12SS #8-16 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.12SS410 #8-16 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #8-16 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.12BO #8-16 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #8-16 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW816.12Z #8-16 x 1/2" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #8-16 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.58SS #8-16 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.58SS410 #8-16 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #8-16 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.58BO #8-16 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #8-16 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW816.58Z #8-16 x 5/8" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #8-16 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.34SS #8-16 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.34SS410 #8-16 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #8-16 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.34BO #8-16 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #8-16 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW816.34Z #8-16 x 3/4" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #8-16 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.1SS #8-16 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.1SS410 #8-16 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, 410 Stnlss Stl #8-16 410 Stnlss Stl HWH 10,000
Add to
Quote
T HW816.1BO #8-16 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Black Oxide/Wax #8-16 Steel Black Oxide/Wax HWH 10,000
Add to
Quote
T HW816.1Z #8-16 x 1" HWH Slotted Tri-Lobular Thread Rolling Screw, Steel Zinc/Wax #8-16 Steel Zinc/Wax HWH 10,000
Add to
Quote
T HW816.114SS #8-16 x 1-1/4" HWH Slotted Tri-Lobular Thread Rolling Screw, 18-8 Stnlss Stl #8-16 18-8 Stnlss Stl HWH 10,000
Add to
Quote

Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Size:
#6-19
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
410 Stnlss Stl
Head:
HWH
Size:
#6-19
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#6-19
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#8-16
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#8-16
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#8-16
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#8-16
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Zinc/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH
Size:
#8-16
Plate:
410 Stnlss Stl
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Black Oxide/Wax
Head:
HWH
Model:
Size:
#8-16
Plate:
Steel Zinc/Wax
Head:
HWH
Size:
#8-16
Plate:
18-8 Stnlss Stl
Head:
HWH

Size, Material, and Head Options for Tri-Lobular Thread Forming Screws

We offer Tri-Lobular Thread Forming Screws in a wide range of sizes, materials, and head types. Standard and custom configurations are available to meet unique requirements.

Size and Length Options

  • Size Options: From #4-20 to 5/16"-18
  • Length Options: From 1/4" up to 2"

Material and Plating Options

  • 410 Stainless Steel: High strength and good corrosion resistance
  • 18-8 Stainless Steel: Excellent corrosion resistance
  • Steel with Black Oxide/Wax: Adds a dark finish
  • Steel with Zinc/Wax: Cost-effective moderate corrosion protection

Head Styles

  • Flat Head
  • Hex Washer Head (HWH)
  • Pan Head

Key Benefits of Tri-Lobular Thread Forming Screws

  • Displaces plastic material instead of cutting. This design preserves the integrity of the plastic substrate.
  • Creates strong internal threads with high thread engagement for greater holding power.
  • Resists vibration and loosening.
  • Reduces the need for inserts or secondary anchoring in plastic surfaces.

Industrial Applications and Industries That Use Tri-Lobular Thread Forming Screws

Tri-Lobular thread-forming screws are ideal for manufacturers that assemble components made from thermoplastics or other moldable materials. They feature a design that prevents chipping or damaging plastic substrates, creating a clean, reliable connection across a range of production settings. Common uses include:

Your Source for Tri-Lobular Thread Forming Screws and Plastic Fastening Solutions

At Empire Bolt & Screw, we’ve supplied manufacturers, OEMs, and other industrial professionals with high-quality fasteners for decades. Our team offers engineering guidance, dimensional verification, and supply chain management solutions. With Vendor Managed Inventory, Kanban, and Just-In-Time programs, we help streamline your inventory while maintaining a steady stock of fastening products. When you partner with Empire for your tri-lobular thread-forming screws and other industrial fasteners, you can count on:

Contact Us Today to Get Tri-Lobular Thread Forming Screws at Great Prices

Request a quote today or contact our office to discuss your Tri-Lobular thread-forming screw requirements. Looking for other plastic fasteners? Explore our full inventory of thread cutting screws and custom fastener options. Empire Bolt & Screw is the trusted source for high-performance fasteners for plastic assemblies.

© 2024 Empire Bolt & Screw Inc. - 1501 E Trent Avenue - Spokane, WA 99202-2938
Toll-Free US & Canada: 888-534-0636 - Phone: 509-534-0636 - Fax: 509-534-1475