ASSY Kombi LT 3.0

Hexagonal Head Long Threaded Structural Wood Screws, 3.0
  • Code Approval
  • ICC , ETA
  • Connection Type
  • Wood/Steel
  • Manufacturer
  • SWG

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Hex Head

Fully Threaded

Counter Thread Tip

Steel to Wood

Product Description

Product Description

The ASSY Kombi Long Threaded 3.0 are partially threaded high performances structural fasteners. They are ICC-ESR [3179] approved fasteners, designed to pull tightly together connection elements in steel-to-wood configuration. Their design offers a precise setting without the need for pre-drilling [may be recommended for long models].

Designers must pay special attention to the geometry requirements, as the ASSY Kombi LT 3.0 must follow the requirements of the partially threaded screw.

Their blue passivated zinc coating makes them adequate for use in low corrosive environment, such as dry service condition. They participate in LEED BD+C 2.0 certification [MRc 4.1 & 4.2, 2 points possible] thanks to the percentage of post-consumer recycled steel used to manufacture them.


Diameter1/2″ (12 mm)
Lengths3-1/8″ (80 mm) , 4-3/4” (120 mm) , 6-1/4” (160 mm)
  • Partially threaded structural fasteners 3.0
  • Installed with AW Bits or Magnetic Socket
  • Regular hex head
  • Designed for high performance steel-to-wood connection
  • Blue passivated zinc coating
  • Counter thread tip providing a fast fastener wood bite & installation
  • Equipped with a shank cutter reducing the installation torque needed
  • LEED certification letter available upon request

To be used with MTC straps for mass timber panel-to-panel connections; MTS15




SpecificationASSY Kombi LTThread LengthDrive BitPackaging Qty.
# ItemMaterialHead
[3] KLT1280Hardened SteelHexagonal Head1/2" x 3 1/8"12 x 802 3/4"70AW 4050
[3] KLT12120Hardened SteelHexagonal Head1/2" x 4 3/4"12 x 1204"100AW 4050
[3] KLT12160Hardened SteelHexagonal Head1/2" x 6 1/4"12 x 1605 3/4"145AW 4050
CAD Drawings

CAD Drawings

ProductASSY LT Kombi DiameterFile Extension
ASSY LT Kombi1/2"12
Design Guides

Design Guides

Structural Screw Catalog

A catalog with all information on our ICC & CCMC code-approved fasteners, including dimensions, references & design properties.

Structural Screw Connection Design Guide

Companion to the Structural Screws Catalog, it provides easy-to-read tables for the most common mass timber connections with design values & installation instructions.

Rigging Design Guide

A step-by-step guide to lift all engineered wood products available in North America using MTC Solutions OSHA & IHSA compliant solutions. Do it right, do it safely!

Code Approvals

Code Approvals

ICC Code Approval ESR-3179 for Partially Threaded Fasteners - 2022 Edition (October)

CCMC Code Approval 13677-R

ISO 50001 Certification for ASSY Fasteners

LA Research Report (LARR): RR 26073

Installation Instructions

Installation Instructions

Structural Fasteners Installation Guide

The structural fasteners installation guide is a practical document designed to simplify the installation process of ASSY self-tapping screws.

White Papers

White Papers

Timber Moisture Content Changes and Associated Stress Predictions on Structural Wood Screws

4D+ Embedment Reduction Factor for Screws Loaded in Withdrawal

Technical Blogs

Technical Blogs

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