ASSY Kombi

Hexagonal Head Partially Threaded Self-Tapping Structural Wood Screw
  • Code Approval
  • ICC , CCMC , ETA
  • Connection Type
  • Wood/Steel
  • Applications
  • Timber Framing , Log Home Building ,
    Mass & Heavy Timber Construction
  • Manufacturer
  • SWG

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Hex Head

Shank Cutter

Partially Threaded

Counter Thread Tip

Product Description

Product Description

The ASSY Kombi screw is an engineered structural wood screw specifically designed for high-performance steel-to-wood connections. It allows for a precise setting without the need for pre-drilling.

Code-approved reliability, the ASSY Kombi screw has been awarded an ICC-ESR approval in the United States and the Canadian Construction Materials Centre Reports (CCMC)  approval in Canada.  

 

Features

Diameters5/16″ (8 mm) , 3/8″ (10 mm) , 1/2″ (12 mm)
Lengths2-1/4″ (60 mm)   to  19” (480 mm)
  • Regular hex head
  • Designed for high-performance steel-to-wood connections
  • Fully threaded Kombi used in attaching our Tension Strap to CLT panels
  • Recommended for lifting in conjunction with the Transport Anchor and the Yoke systems
  • Replaces lag bolt
  • Installation with AW bits or metric Hex head socket
  • For more connection examples and information see our Design Guides
  • All ASSY fasteners can 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. LEED certification letter is available on request.

The hex head is engineered for installation using either a socket or a bit for multipurpose applications. The reinforced and tapered shoulder below the screw head ensures a tight fit in pre-drilled steel plate holes. The tapered shape enables the screw to self-center. The ASSY Kombi screw is equipped with a regular hex head, in order to achieve the best steel-to-wood connections. The ASSY Kombi screw can also be driven with a regular AW 40 Bit. The engineered hex head is suitable for lifting of timber elements in conjunction with the Transport Anchor and the Yoke systems.

Specifications

Specifications

SpecificationASSY Kombi PTThread LengthAW Drive BitPackaging Qty.
# ItemMaterialHead Typein.mmin.mm
[3] KPT0860Hardened SteelHexagonal Head5/16" x 2 3/8"8 x 601 1/2"40AW 4075
[3] KPT0880Hardened SteelHexagonal Head5/16" x 3 1/8"8 x 802"50AW 4075
[3] KPT08100Hardened SteelHexagonal Head5/16" x 4"8 x 1002 3/8"60AW 4075
[3] KPT08120Hardened SteelHexagonal Head5/16" x 4 3/4"8 x 1203 1/8"80AW 4075
[3] KPT08140Hardened SteelHexagonal Head5/16" x 5 1/2"8 x 1403 1/8"80AW 4075
[3] KPT08160Hardened SteelHexagonal Head5/16" x 6 1/4"8 x 1603 1/8"80AW 4075
[3] KPT08180Hardened SteelHexagonal Head5/16" x 7 1/8"8 x 1803 1/8"80AW 4075
[3] KPT08200Hardened SteelHexagonal Head5/16" x 7 7/8"8 x 2003 1/8"80AW 4075
[3] KPT08220Hardened SteelHexagonal Head5/16" x 8 5/8"8 x 2204"100AW 4075
[3] KPT08240Hardened SteelHexagonal Head5/16" x 9 1/2"8 x 2404"100AW 4075
[3] KPT08260Hardened SteelHexagonal Head5/16" x 10 1/4"8 x 2604"100AW 4075
[3] KPT08280Hardened SteelHexagonal Head5/16" x 11"8 x 2804"100AW 4075
[3] KPT08300Hardened SteelHexagonal Head5/16" x 11 7/8"8 x 3004"100AW 4075
[3] KPT1060Hardened SteelHexagonal Head3/8" x 2 3/8"10 x 602"50AW 4050
[3] KPT1080Hardened SteelHexagonal Head3/8" x 3 1/8"10 x 802"50AW 4050
[3] KPT10100Hardened SteelHexagonal Head3/8" x 4"10 x 1002 3/8"60AW 4050
[3] KPT10120Hardened SteelHexagonal Head3/8" x 4 3/4"10 x 1203 1/8"80AW 4050
[3] KPT10140Hardened SteelHexagonal Head3/8" x 5 1/2"10 x 1403 1/8"80AW 4050
[3] KPT10160Hardened SteelHexagonal Head3/8" x 6 1/4"10 x 1604"100AW 4050
[3] KPT10180Hardened SteelHexagonal Head3/8" x 7 1/8"10 x 1804"100AW 4050
[3] KPT10200Hardened SteelHexagonal Head3/8" x 7 7/8"10 x 2004"100AW 4050
[3] KPT10220Hardened SteelHexagonal Head3/8" x 8 5/8"10 x 2204"100AW 4050
[3] KPT10240Hardened SteelHexagonal Head3/8" x 9 1/2"10 x 2404"100AW 4050
[3] KPT10260Hardened SteelHexagonal Head3/8" x 10 1/4"10 x 2604"100AW 4050
[3] KPT10280Hardened SteelHexagonal Head3/8" x 11"10 x 2804"100AW 4050
[3] KPT10300Hardened SteelHexagonal Head3/8" x 11 7/8"10 x 3004"100AW 4050
[3] KPT10320Hardened SteelHexagonal Head3/8" x 12 5/8"10 x 3204 3/4"120AW 4050
[3] KPT10340Hardened SteelHexagonal Head3/8" x 13 3/8"10 x 3404 3/4"120AW 4050
[3] KPT10360Hardened SteelHexagonal Head3/8" x 14 1/4"10 x 3604 3/4"120AW 4050
[3] KPT10380Hardened SteelHexagonal Head3/8" x 15"10 x 3804 3/4"120AW 4050
[3] KPT10400Hardened SteelHexagonal Head3/8" x 15 3/4"10 x 4004 3/4"120AW 4050
[3] KPT12100Hardened SteelHexagonal Head1/2" x 4"12 x 1002 3/8"60AW 4050
[3] KPT12120Hardened SteelHexagonal Head1/2" x 4 3/4"12 x 1203 1/8"80AW 4050
[3] KPT12140Hardened SteelHexagonal Head1/2" x 5 1/2"12 x 1403 1/8"80AW 4050
[3] KPT12180Hardened SteelHexagonal Head1/2" x 7 1/8"12 x 1804"100AW 4050
[3] KPT12200Hardened SteelHexagonal Head1/2" x 7 7/8"12 x 2004"100AW 4050
[3] KPT12220Hardened SteelHexagonal Head1/2" x 8 5/8"12 x 2204 3/4"120AW 4050
[3] KPT12240Hardened SteelHexagonal Head1/2" x 9 1/2"12 x 2404 3/4"120AW 4050
[3] KPT12260Hardened SteelHexagonal Head1/2" x 10 1/4"12 x 2604 3/4"120AW 4050
[3] KPT12280Hardened SteelHexagonal Head1/2" x 11"12 x 2804 3/4"120AW 4050
[3] KPT12300Hardened SteelHexagonal Head1/2" x 11 7/8"12 x 3004 3/4"120AW 4050
[3] KPT12320Hardened SteelHexagonal Head1/2" x 12 5/8"12 x 3204 3/4"120AW 4050
[3] KPT12340Hardened SteelHexagonal Head1/2" x 13 3/8"12 x 3404 3/4"120AW 4050
[3] KPT12360Hardened SteelHexagonal Head1/2" x 14 1/4"12 x 3604 3/4"120AW 4050
[3] KPT12380Hardened SteelHexagonal Head1/2" x 15"12 x 3805 3/4"145AW 4050
[3] KPT12400Hardened SteelHexagonal Head1/2" x 15 3/4"12 x 4005 3/4"145AW 4025
[3] KPT12440Hardened SteelHexagonal Head1/2" x 17 1/4"12 x 4405 3/4"145AW 4025
[3] KPT12480Hardened SteelHexagonal Head1/2" x 19"12 x 4805 3/4"145AW 4025
CAD Drawings

CAD Drawings

ProductASSY PT Kombi DiameterFile Extension
in.mm..DXF
ASSY PT Kombi5/16"8
ASSY PT Kombi3/8"10
ASSY PT Kombi1/2"12
ALL ABOVE
Design Guides

Design Guides

Structural Screw Design Guide

The most complete tool for high-capacity mass timber connections design using ICC and CCMC code approved ASSY structural fasteners.

Structural Mass Timber Fastening Design Guide

Companion to the Structural Screws Design Guide, it provides pre-designed, easy-to-read tables for tens of mass timber connections using high-capacity ASSY self-tapping screws.

Code Approvals

Code Approvals

ICC Code Approval ESR-3179 for Partially Threaded Fasteners - 2021 Edition (August)

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

Steel to CLT Lateral Connections

Substitution of Lag Screws with Wood Screws

Screw Withdrawal Resistance in Near-Edge Applications

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

4D+ Embedment Reduction Factor for Screws Loaded in Withdrawal

CLT Horizontal Diaphragm Design Example

ASSY Screws vs. Lag Bolt

Structural Screw Technology in Tall Wood Buildings

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