ASSY SK 4.0

Washer Head Partially Threaded Structural Wood Screws, 4.0
  • Code Approval
  • ICC , ETA
  • Connection Type
  • Wood/Wood, Wood/Steel
  • Applications
  • Timber Framing, Log Home Building, Mass & Heavy Timber Construction
  • Manufacturer
  • SWG

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Washer Head

Partially Threaded

Shank Cutter

Reamer Tip

Product Description

Product Description

The ASSY SK 4.0 are partially threaded high performances structural fasteners. They are ICC-ESR [3179] approved fasteners, designed to pull tightly together connection elements and are recommended when head pull-through is the governing consideration.

 
Their design offers a precise setting without the need for pre-drilling [may be recommended for long models]. 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.

 

Features

Diameters1/4″ (6 mm), 5/16″ (8 mm), 3/8″ (10 mm)
Lengths2-1/4″ (60 mm)  to  20-1/2” (520 mm)
  • Partially threaded structural fastener 4.0
  • Installed with RW Bits
  • Large washer head
  • Provides tremendous head pull-through capacity
  • Ideal for wood-to-wood & steel-to-wood connections
  • Blue passivated zinc coating
  • Reamer tip providing the fastest fastener wood bite & installation
  • Equipped with a shank cutter reducing the installation torque needed
  • LEED certification letter available upon request
Specifications

Specifications

SpecificationASSY SKThread LengthDrive BitPackaging Qty.
# ItemMaterialHead Typein.mmin.mm
[4] SK0650Hardened SteelWasher Head1/4" x 2"6 x 501 3/4"45RW 30100
[4] SK0660Hardened SteelWasher Head1/4" x 2 3/8"6 x 601 1/2"37RW 30100
[4] SK0670Hardened SteelWasher Head1/4" x 2 3/4"6 x 701 5/8"42RW 30100
[4] SK0680Hardened SteelWasher Head1/4" x 3 1/8"6 x 802"50RW 30100
[4] SK0690Hardened SteelWasher Head1/4" x 3 1/2"6 x 902"50RW 30100
[4] SK06100Hardened SteelWasher Head1/4" x 4"6 x 1002 3/8"60RW 30100
[4] SK06120Hardened SteelWasher Head1/4" x 4 3/4"6 x 1202 3/4"70RW 30100
[4] SK06140Hardened SteelWasher Head1/4" x 5 1/2"6 x 1402 3/4"70RW 30100
[4] SK06160Hardened SteelWasher Head1/4" x 6 1/4"6 x 1602 3/4"70RW 30100
[4] SK06180Hardened SteelWasher Head1/4" x 7 1/8"6 x 1802 3/4"70RW 30100
[4] SK06200Hardened SteelWasher Head1/4" x 7 7/8"6 x 2002 3/4"70RW 30100
[4] SK06220Hardened SteelWasher Head1/4" x 8 5/8"6 x 2202 3/4"70RW 30100
[4] SK06240Hardened SteelWasher Head1/4" x 9 1/2"6 x 2402 3/4"70RW 30100
[4] SK06260Hardened SteelWasher Head1/4" x 10 1/4"6 x 2602 3/4"70RW 30100
[4] SK06280Hardened SteelWasher Head1/4" x 11"6 x 2802 3/4"70RW 30100
[4] SK06300Hardened SteelWasher Head1/4" x 11 7/8"6 x 3002 3/4"70RW 30100
[4] SK0860Hardened SteelWasher Head5/16" x 2 3/8"8 x 602"50RW 4050
[4] SK0880Hardened SteelWasher Head5/16" x 3 1/8"8 x 802"50RW 4050
[4] SK08100Hardened SteelWasher Head5/16" x 4"8 x 1002 3/8"60RW 4050
[4] SK08120Hardened SteelWasher Head5/16" x 4 3/4"8 x 1203 1/8"80RW 4050
[4] SK08140Hardened SteelWasher Head5/16" x 5 1/2"8 x 1403 1/8"80RW 4050
[4] SK08160Hardened SteelWasher Head5/16" x 6 1/4"8 x 1603 1/8"80RW 4050
[4] SK08180Hardened SteelWasher Head5/16" x 7 1/8"8 x 1803 1/8"80RW 4050
[4] SK08200Hardened SteelWasher Head5/16" x 7 7/8"8 x 2003 1/8"80RW 4050
[4] SK08220Hardened SteelWasher Head5/16" x 8 5/8"8 x 2204"100RW 4050
[4] SK08240Hardened SteelWasher Head5/16" x 9 1/2"8 x 2404"100RW 4050
[4] SK08260Hardened SteelWasher Head5/16" x 10 1/4"8 x 2604"100RW 4050
[4] SK08280Hardened SteelWasher Head5/16" x 11"8 x 2804"100RW 4050
[4] SK08300Hardened SteelWasher Head5/16" x 11 7/8"8 x 3004"100RW 4050
[4] SK08320Hardened SteelWasher Head5/16" x 12 5/8"8 x 3204"100RW 4050
[4] SK08340Hardened SteelWasher Head5/16" x 13 3/8"8 x 3404"100RW 4050
[4] SK08360Hardened SteelWasher Head5/16" x 14 1/4"8 x 3604"100RW 4050
[4] SK08380Hardened SteelWasher Head5/16" x 15"8 x 3804"100RW 4050
[4] SK08400Hardened SteelWasher Head5/16" x 15 3/4"8 x 4004"100RW 4050
[4] SK08420Hardened SteelWasher Head5/16" x 16 1/2"8 x 4204"100RW 4050
[4] SK08440Hardened SteelWasher Head5/16" x 17 1/4"8 x 4404"100RW 4050
[4] SK08480Hardened SteelWasher Head5/16" x 19"8 x 4804"100RW 4025
[4] SK08520Hardened SteelWasher Head5/16" x 20 1/2"8 x 5204"100RW 4025
[4] SK10100Hardened SteelWasher Head3/8" x 4"10 x 1002 3/8"60RW 5050
[4] SK10120Hardened SteelWasher Head3/8" x 4 3/4"10 x 1203 1/8"80RW 5050
[4] SK10140Hardened SteelWasher Head3/8" x 5 1/2"10 x 1403 1/8"80RW 5050
[4] SK10160Hardened SteelWasher Head3/8" x 6 1/4"10 x 1604"100RW 5050
[4] SK10180Hardened SteelWasher Head3/8" x 7 1/8"10 x 1804"100RW 5050
[4] SK10200Hardened SteelWasher Head3/8" x 7 7/8"10 x 2004"100RW 5050
[4] SK10220Hardened SteelWasher Head3/8" x 8 5/8"10 x 2204"100RW 5050
[4] SK10240Hardened SteelWasher Head3/8" x 9 1/2"10 x 2404"100RW 5050
[4] SK10260Hardened SteelWasher Head3/8" x 10 1/4"10 x 2604"100RW 5050
[4] SK10280Hardened SteelWasher Head3/8" x 11"10 x 2804"100RW 5050
[4] SK10300Hardened SteelWasher Head3/8" x 11 7/8"10 x 3004"100RW 5050
[4] SK10320Hardened SteelWasher Head3/8" x 12 5/8"10 x 3204 3/4"120RW 5050
[4] SK10340Hardened SteelWasher Head3/8" x 13 3/8"10 x 3404 3/4"120RW 5050
[4] SK10360Hardened SteelWasher Head3/8" x 14 1/4"10 x 3604 3/4"120RW 5050
[4] SK10380Hardened SteelWasher Head3/8" x 15"10 x 3804 3/4"120RW 5050
[4] SK10400Hardened SteelWasher Head3/8" x 15 3/4"10 x 4004 3/4"120RW 5050
[4] SK10460Hardened SteelWasher Head3/8" x 18 1/8"10 x 4604 3/4"120RW 5025
Design Guides

Design Guides

Structural Screw Catalog

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

Code Approvals

Code Approvals

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

ISO 50001 Certification for ASSY Fasteners

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