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T17 Fastlok™

The T17 FASTLOK™ by Lakeside Construction Fasteners allows for metal panels to be stitched and secured in-place to prevent separation! With the deep major thread design the T17 FASTLOK™ will help bond metal panels together to resist panel separation when utilizing the T17 FASTLOK™ as a stitch fastener. T17 FASTLOK™ is a great affordable solution to help prevent panel overlapping gaps!

T17 FASTLOK™ SYSTEM

  • T17 cut point for quick Panel Penetration!
  • Engineered thread design to lock Panels In-Place!
  • T17 FASTLOK™ for Speed of Installation!
  • EPDM washer for Positive Seal!
    Innovative L3 Dura Protec™ coating to Prevent Red Rust!

Fastener Dia.: #12
Head Size: 1/4”
Threads: 14 per inch
Innovation: Fastener Head will not Red Rust & H-Low™ Threads
Cut Point: Type-17
HWH: Stainless Head
Material: C1022
Washer: Tubular EPDM Coating
System: L3 Dura Protec™

Standard Options:

Custom Options:

#9 and #10 Self-Tappers
Available Upon Request.

Providing Alternative Fastener and Foam Solutions!™

For Further Inquiries Call

1-800-537-4160

You can request a quote by contacting our customer service team via email, phone, or by clicking the button below and filling out our contact form.

Request a Quote

Providing Alternative Fastener
and Foam Solutions!™
© 2026 Lakeside Construction Fasteners

Shingle & Downspout Division

Application:

Asphalt shingles applied to a roof deck, and water shed utilizing downspout systems. #10 WOODX 2.5”, 3” or 4” lengths (no washer) used with gutter brackets securing the gutter to the building. Gutter seams stitched with LCF painted 43 Pop stainless rivets as the #8 Z-STITCH with strapping secures the downspout. SHINGLE RIDGE-X VENT is an ideal alternative solution venting the shingle ridge cap. EMSEAL self expanding foam can fill voids between the facia and sidewall. NOVAFLEX premium silicone sealant bonds to a multitude of substrates creating a harden bond without breakage. NOVAFLEX is moisture activated for sealing all application leaks (roof/downspout).

Shingle / Downspout:

  • #10 WOOD-X
  • #8 Z-STITCH
  • #10 410 SS WOOD-X
  • #12 FASTLOK (STITCH)
  • 300 STAINLESS RIVETS
  • BUTYL TAPE
  • STRIP LX RETROFIT
  • EMSEAL
  • BUTYL IN-A-TUBE
  • NOVAFLEX
  • SHINGLE RIDGE-X VENT
© 2026 Lakeside Construction Fasteners

Modular Division

Application:

26/29-gauge metal panel or asphalt shingles applied to roof the system. Fasteners used to attach the metal panel to the wood frame structure. Structures are moveable that can be hauled then placed on site. #10 PRO CONCEAL TORX-25 without a washer for inside liner panels. LCF stocks a multitude of 300 Stainless Steel Pop 43 Rivets for modular stitching applications. #8 Z-STITCH ideal to secure gutter straps to the sidewall. #10 WOODX with high-low threads for quick installation reduces labor costs. #14 MASTERGRIP recommended on older buildings to replace nails/screws that have backed out.

Modular / Portable:

  • #8 Z-STITCH
  • #10 WOOD-X
  • #10 PRO CLIPLOK
  • #12 STEEL-X
  • #10 SC STEEL GUARD
  • #12 FASTLOK
  • #10 PRO CONCEAL TORX-25
  • #14 MASTERGIP
  • 300 STAINLESS RIVETS
  • BUTYL TAPE
  • SC110VENT
  • ROOF BOOTS & FLASHINGS
  • DIE CUT CLOSURES
  • SEALANTS
© 2026 Lakeside Construction Fasteners

Light Commercial Division

Application:

26/29-gauge metal panel applied to sidewall and roof metal frame structures. Some framing structures could be wood frame. #12 STEELX, #12 PROTEK, and #14 MASTERGRIP (repair fastener) engineered to meet the specifications for metal decks and metal-to-metal applications. LCF offers a full line of CLOSESEAL-PLUS die cut closures, RIDGE-X VENT (ridge/hip venting), and silicone sealants colored matched to the metal panel. #12 PROTEK self-driller with concealed washer engineered for extreme weather. Our roof boots or flashings can seal off any exposed building penetration.

Commercial:

  • #12 STEEL-X
  • #10 PRO CLIPLOK
  • #12 PROTEK
  • #10 SC STEEL GUARD
  • #12 PRO ZMAX
  • RIDGE-X VENT
  • SC110VENT
  • ROOF BOOTS & FLASHINGS
  • RIB VENTFLEX
  • SEALANTS
  • SC110VENT-FLEX
  • LCF UNDERLAYMENT
© 2026 Lakeside Construction Fasteners

Residential Division

Application:

26/29-gauge metal panel, asphalt, stone coated metal shingles or concreate/clay tiles applied onto the roof. Metal panels for residential homes (single or multi-family) moving towards standing seam or stone coated metal shingles. #10 PRO CLIPLOK series of fasteners for concealed applications under the standing seam panel. #10 WOODX or #12 FASTLOK (no washer) are preferred fasteners with stone coated metal shingles. High wind and fire prone residential zones the #10 ZMAX, #10 SC STEEL GUARD, or #10 WOODX 410 Stainless the complete alternative defensive solution protecting your home.

Residential / Liner Panels:

  • #10 WOOD-X
  • #12 FASTLOK
  • #10 ZMAX
  • #10 PRO CLIPLOK
  • #10 SC STEEL GUARD
  • #10 PRO CONCEAL TORX-25
  • SC110VENT-R
  • ROOF BOOTS & FLASHINGS
  • LCF UNDERLAYMENT
  • NOVAFLEX
  • STRIP LX RETROFIT
  • EMSEAL
© 2026 Lakeside Construction Fasteners

Pre-Engineered Division

Application:

26/29-gauge metal applied to sidewalls and roof onto a metal frame structure. LCF self-drilling fasteners used to attach the metal panels to the metal frame Architectural structure. #12 PROTEK with self sealing concealed washer promotes a weathertight seal. #12 STEELX with or without a washer a low-cost self-drilling solution for Pre-Engineered metal sidewalls. #12 PRO ZMAX the premium Long-Life fastener designed to prevent red rust on the head of the fastener for the life of the metal building panel.

Pre-Engineered / Architectural:

  • #12 STEEL-X
  • #10 PRO CLIPLOK
  • #12 PROTEK
  • #10 SC STEEL GUARD
  • #12 PRO ZMAX
  • SC3 VENT STICKS
  • SC110VENT
  • ROOF BOOTS & FLASHINGS
  • RIB VENTFLEX
  • NOVAFLEX
  • BUTYL IN-A-TUBE
  • EMSEAL
© 2026 Lakeside Construction Fasteners

Post Frame Division

Application:

26 / 29-gauge metal panel applied to sidewalls and roofs onto to a wood frame structure. LCF fasteners are used to attach the metal panel to the wood frame structure. Most popular fastener in the industry is our #10 WOOD-X followed by the #14 MASTERGRIP. Long-Life #10 ZMAX (5/16 HWH) or #10 SC STEEL GUARD (1/4 HWH) an alternative solution against red rust that will last for the life of the metal panel. #10 304 Stainless WOOD-X used with liner panels for poultry or animal confinement structures needed in highly corrosive environments.

Post Frame / Ag / Liner Panel:

  • #10 WOOD-X
  • #12 FASTLOK
  • #10 ZMAX
  • #14 MASTERGRIP
  • #10 304 SS WOOD-X
  • STRIP LX RETROFIT
  • SC110VENT
  • ROOF BOOTS & FLASHINGS
  • RIB VENTFLEX SEALANTS
  • SC3 VENT STICKS
  • SC2 VENT STICKS
© 2026 Lakeside Construction Fasteners