Flat Top Self-Sealing Fasteners

Ideal for roof and wall applications.
  1. Flat on top stabilizes socket during installation
  2. Higher hex provides positive socket engagement
  3. EPDM sealant assures waterproof seal even under harsh conditions
  4. Special undercut entraps sealant even when driven at angles
  5. Standard Oxyseal II™ long-life coating for added corrosion protection on carbon steel fasteners

 

Flat-Top fasteners combine under-cut hex washer heads with EPDM cut-tubular sealing washers. They are a superior and cost-effective alternative to standard fasteners with metal back washers.

One-piece design eliminates damage to painted washer surface and eliminates dissimilar metal washer materials

Atlas Technical Services Page

flat-top fastener breakdown

Carbon Steel

  • Self-Tapping and tapered compression point (TCP)
  • .0003 electro zinc plated
  • Socket support
  • With under-cut hex heads and EPDM sealing washers
  • Oxyseal II long-life coating

Carbon Steel Flat Top Fasteners

410 Stainless Steel

  • Self-Tapping and tapered compression point (TCP)
  • .0003 electro zinc plated
  • Socket support
  • With under-cut hex heads and EPDM sealing washers
  • Oxyseal II long-life coating

410 Stainless Flat Top Fasteners

Recommended Driving Speed: For drilling fasteners #12 through #18 use an electric screw gun with a depth sensing nose piece @ 2,000 RPM maximum.   Self-tapping fasteners carbon & 410 stainless @ 2,000 RPM maximum and 300 stainless @ 800 RPM maximum.

Fastener Strength

Pull Over Values

Flat Top Pull Over Values

Pull Out Values

Flat Top pull out values

Shear Values

Flat Top shear values

All test results and recommendations are based on laboratory tests.  Specific job site conditions should be taken into consideration when specifying the proper fastener.   Because applications vary, we assume no liability for use of this information.

1628 Troy Road • Ashland Ohio, 44805 • T: 419-289-6171 - 800-321-6977 F: 419-289-2564 W: www.atlasfasteners.com