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Self-Drilling Flat-Head Screw with Wings 

Self-Drilling Flat-Head Screw with Wings

Use this screw for securing wood, plywood and fiber cement to steel (up to 0.209" thick). Wings bore through wood to create a clearance hole so piece does not climb up shank and then break off as they engage with steel.

Key Features

  • Flat countersunk head with self-countersinking nibs.
  • #3 square drive (replacement bit model BIT3S-2).
  • Machine screw thread, threaded full length.
  • Shank slot enhances thread formation in steel and removes exhaust.
  • Wings above drill point provide clearance hole in work piece so it won’t climb up the shank; wings break off as point engages the steel substrate.
  • 2 1/2" length for 2x wood; 2" length for 1" and 5/4" boards.
  • Type 410 stainless steel is coated for additional corrosion protection.
  • Type 410 stainless steel can be hardened through heat treatment, giving it the ability to drill through metal. It does not offer the same level of corrosion resistance of either Type 316 or 305 stainless steel.

Applications

  • Fasten wood, plywood and fiber cement to steel — up to 0.209" thick

Warning

  • Hardened stainless-steel fasteners should not be used with steel framing in environments with high humidity, condensation or other moisture that will be present at the dissimilar-metal interface

Ordering Information

  • These products are subject to quantities on hand or may require special ordering and are subject to minimum order quantities and longer lead times. Call Simpson Strong‑Tie for details (800) 999-5099.

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Product Information Table

Fastener Production Information and Stuff & Things
These products are subject to quantities on hand or may require special ordering and are subject to minimum order quantities and longer lead times. Call Simpson Strong‑Tie for details (800) 999-5099.
Model No. Coating/Material Screw Size Length (in.) Head Diameter (in.) Drive Type Head Type Shank Type Thread Type Thread Length TPI Point Type Point Size Packaging Qty. UPC
F12C200FDB Type 410 Stainless Steel #12 2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 2500 744039003426
F12C200FDC Type 410 Stainless Steel #12 2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 100 744039003471
F12C200FDM Type 410 Stainless Steel #12 2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 1000 744039633104
F12C250FDB Type 410 Stainless Steel #12 2 1/2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 1800 744039003433
F12C250FDC Type 410 Stainless Steel #12 2 1/2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 100 744039003488
F12C250FDM Type 410 Stainless Steel #12 2 1/2 0.375 #3 Square Flat Head Shank Slot Machine Threads Full 24 Drill Point with Wings 3 1000 744039633111
F14C325FDB Type 410 Stainless Steel #14 3 1/4 0.468 #3 Square Flat Head Shank Slot Machine Threads Full 20 Drill Point with Wings 4 1000 744039615254
F14C325FDC Type 410 Stainless Steel #14 3 1/4 0.468 #3 Square Flat Head Shank Slot Machine Threads Full 20 Drill Point with Wings 4 100 744039633227

Product Information Table

Model No. Length (in.) Screw Size Drive Type Head Diameter (in.) Head Type Thread Length Thread Type TPI Shank Type Point Size Point Type Coating/Material Packaging Quantity UPC
F12C200FDB 2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 2500 744039003426
F12C200FDC 2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 100 744039003471
F12C200FDM 2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 1000 744039633104
F12C250FDB 2 1/2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 1800 744039003433
F12C250FDC 2 1/2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 100 744039003488
F12C250FDM 2 1/2 #12 #3 Square 0.375 Flat Head Full Machine Threads 24 Shank Slot 3 Drill Point with Wings Type 410 Stainless Steel 1000 744039633111
F14C325FDB 3 1/4 #14 #3 Square 0.468 Flat Head Full Machine Threads 20 Shank Slot 4 Drill Point with Wings Type 410 Stainless Steel 1000 744039615254
F14C325FDC 3 1/4 #14 #3 Square 0.468 Flat Head Full Machine Threads 20 Shank Slot 4 Drill Point with Wings Type 410 Stainless Steel 100 744039633227