ASSY SK 3.0

Product Description

The ASSY SK 3.0 are partially threaded high performances structural fasteners. They are ICC-ESR [3179] & CCMC 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 environments, 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

Diameters	1/4″ (6 mm) , 5/16″ (8 mm) , 3/8″ (10 mm) , 1/2″ (12 mm)
Lengths	1-3/4″ (50 mm) to 20-1/2″ (520 mm)

Partially threaded structural fasteners 3.0
Installed with AW Bits
Large washer head
Provides tremendous head pull-through capacity
Ideal for wood-to-wood & steel-to-wood connections
Blue passivated zinc coating
Counter thread 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

Specification	ASSY SK				Thread Length		Drive Bit	Packaging Qty.
# Item	Material	Head Type	in.	mm	in.	mm
[3] SK0650	Hardened Steel	Washer Head	1/4 x 2	6 x 50	1 3/4	45	RW 30	100
[3] SK0660	Hardened Steel	Washer Head	1/4 x 2 3/8	6 x 60	1 1/2	37	RW 30	100
[3] SK0670	Hardened Steel	Washer Head	1/4 x 2 3/4	6 x 70	1 5/8	42	RW 30	100
[3] SK0680	Hardened Steel	Washer Head	1/4 x 3 1/8	6 x 80	2	50	RW 30	100
[3] SK0690	Hardened Steel	Washer Head	1/4 x 3 1/2	6 x 90	2	50	RW 30	100
[3] SK06100	Hardened Steel	Washer Head	1/4 x 4	6 x 100	2 3/8	60	RW 30	100
[3] SK06120	Hardened Steel	Washer Head	1/4 x 4 3/4	6 x 120	2 3/4	70	RW 30	100
[3] SK06140	Hardened Steel	Washer Head	1/4 x 5 1/2	6 x 140	2 3/4	70	RW 30	100
[3] SK06160	Hardened Steel	Washer Head	1/4 x 6 1/4	6 x 160	2 3/4	70	RW 30	100
[3] SK06180	Hardened Steel	Washer Head	1/4 x 7 1/8	6 x 180	2 3/4	70	RW 30	100
[3] SK06200	Hardened Steel	Washer Head	1/4 x 7 7/8	6 x 200	2 3/4	70	RW 30	100
[3] SK06220	Hardened Steel	Washer Head	1/4 x 8 5/8	6 x 220	2 3/4	70	RW 30	100
[3] SK06240	Hardened Steel	Washer Head	1/4 x 9 1/2	6 x 240	2 3/4	70	RW 30	100
[3] SK06260	Hardened Steel	Washer Head	1/4 x 10 1/4	6 x 260	2 3/4	70	RW 30	100
[3] SK06280	Hardened Steel	Washer Head	1/4 x 11	6 x 280	2 3/4	70	RW 30	100
[3] SK06300	Hardened Steel	Washer Head	1/4 x 11 7/8	6 x 300	2 3/4	70	RW 30	100
[3] SK0860	Hardened Steel	Washer Head	5/16 x 2 3/8	8 x 60	2	50	RW 40	50
[3] SK0880	Hardened Steel	Washer Head	5/16 x 3 1/8	8 x 80	2	50	RW 40	50
[3] SK08100	Hardened Steel	Washer Head	5/16 x 4	8 x 100	2 3/8	60	RW 40	50
[3] SK08120	Hardened Steel	Washer Head	5/16 x 4 3/4	8 x 120	3 1/8	80	RW 40	50
[3] SK08140	Hardened Steel	Washer Head	5/16 x 5 1/2	8 x 140	3 1/8	80	RW 40	50
[3] SK08160	Hardened Steel	Washer Head	5/16 x 6 1/4	8 x 160	3 1/8	80	RW 40	50
[3] SK08180	Hardened Steel	Washer Head	5/16 x 7 1/8	8 x 180	3 1/8	80	RW 40	50
[3] SK08200	Hardened Steel	Washer Head	5/16 x 7 7/8	8 x 200	3 1/8	80	RW 40	50
[3] SK08220	Hardened Steel	Washer Head	5/16 x 8 5/8	8 x 220	4	100	RW 40	50
[3] SK08240	Hardened Steel	Washer Head	5/16 x 9 1/2	8 x 240	4	100	RW 40	50
[3] SK08260	Hardened Steel	Washer Head	5/16 x 10 1/4	8 x 260	4	100	RW 40	50
[3] SK08280	Hardened Steel	Washer Head	5/16 x 11	8 x 280	4	100	RW 40	50
[3] SK08300	Hardened Steel	Washer Head	5/16 x 11 7/8	8 x 300	4	100	RW 40	50
[3] SK08320	Hardened Steel	Washer Head	5/16 x 12 5/8	8 x 320	4	100	RW 40	50
[3] SK08340	Hardened Steel	Washer Head	5/16 x 13 3/8	8 x 340	4	100	RW 40	50
[3] SK08360	Hardened Steel	Washer Head	5/16 x 14 1/4	8 x 360	4	100	RW 40	50
[3] SK08380	Hardened Steel	Washer Head	5/16 x 15	8 x 380	4	100	RW 40	50
[3] SK08400	Hardened Steel	Washer Head	5/16 x 15 3/4	8 x 400	4	100	RW 40	50
[3] SK08420	Hardened Steel	Washer Head	5/16 x 16 1/2	8 x 420	4	100	RW 40	50
[3] SK08440	Hardened Steel	Washer Head	5/16 x 17 1/4	8 x 440	4	100	RW 40	50
[3] SK08480	Hardened Steel	Washer Head	5/16 x 19	8 x 480	4	100	RW 40	25
[3] SK08520	Hardened Steel	Washer Head	5/16 x 20 1/2	8 x 520	4	100	RW 40	25
[3] SK10100	Hardened Steel	Washer Head	3/8 x 4	10 x 100	2 3/8	60	RW 50	50
[3] SK10120	Hardened Steel	Washer Head	3/8 x 4 3/4	10 x 120	3 1/8	80	RW 50	50
[3] SK10140	Hardened Steel	Washer Head	3/8 x 5 1/2	10 x 140	3 1/8	80	RW 50	50
[3] SK10160	Hardened Steel	Washer Head	3/8 x 6 1/4	10 x 160	4	100	RW 50	50
[3] SK10180	Hardened Steel	Washer Head	3/8 x 7 1/8	10 x 180	4	100	RW 50	50
[3] SK10200	Hardened Steel	Washer Head	3/8 x 7 7/8	10 x 200	4	100	RW 50	50
[3] SK10220	Hardened Steel	Washer Head	3/8 x 8 5/8	10 x 220	4	100	RW 50	50
[3] SK10240	Hardened Steel	Washer Head	3/8 x 9 1/2	10 x 240	4	100	RW 50	50
[3] SK10260	Hardened Steel	Washer Head	3/8 x 10 1/4	10 x 260	4	100	RW 50	50
[3] SK10280	Hardened Steel	Washer Head	3/8 x 11	10 x 280	4	100	RW 50	50
[3] SK10300	Hardened Steel	Washer Head	3/8 x 11 7/8	10 x 300	4	100	RW 50	50
[3] SK10320	Hardened Steel	Washer Head	3/8 x 12 5/8	10 x 320	4 3/4	120	RW 50	50
[3] SK10340	Hardened Steel	Washer Head	3/8 x 13 3/8	10 x 340	4 3/4	120	RW 50	50
[3] SK10360	Hardened Steel	Washer Head	3/8 x 14 1/4	10 x 360	4 3/4	120	RW 50	50
[3] SK10380	Hardened Steel	Washer Head	3/8 x 15	10 x 380	4 3/4	120	RW 50	50
[3] SK10400	Hardened Steel	Washer Head	3/8 x 15 3/4	10 x 400	4 3/4	120	RW 50	50
[3] SK10460	Hardened Steel	Washer Head	3/8 x 18 1/8	10 x 460	4 3/4	120	RW 50	25
[3] SK12200	Hardened Steel	Washer Head	1/2 x 7 7/8	12 x 200	4	100	RW 50	25
[3] SK12240	Hardened Steel	Washer Head	1/2 x 9 1/2	12 x 240	4 3/4	120	RW 50	25
[3] SK12260	Hardened Steel	Washer Head	1/2 x 10 1/4	12 x 260	4 3/4	120	RW 50	25
[3] SK12300	Hardened Steel	Washer Head	1/2 x 11 7/8	12 x 300	4 3/4	120	RW 50	25
[3] SK12400	Hardened Steel	Washer Head	1/2 x 15 3/4	12 x 400	5 3/4	145	RW 50	25
[3] SK12480	Hardened Steel	Washer Head	1/2 x 19	12 x 480	5 3/4	145	RW 50	25
[3] SK12520	Hardened Steel	Washer Head	1/2 x 20 1/2	12 x 520	5 3/4	145	RW 50	25

Product	ASSY SK Diameter	File Extension
ASSY SK	1/4	6
ASSY SK	5/16	8
ASSY SK	3/8	10
ASSY SK	1/2	12
ALL ABOVE

Product

ASSY SK Diameter

File Extension

in.

mm.

.DXF

ASSY SK

1/4

ASSY SK

5/16

ASSY SK

3/8

ASSY SK

1/2

ALL ABOVE

Structural Screw Connection Design Guide

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Mass Timber Hardware Specialist

Hexagonal Head Partially Threaded Structural Wood Screws, 3.0

Washer Head

Shank Cutter

Partially Threaded

Counter Thread Tip

Product Description

Features

Specifications

2D & 3D Geometry

Design Guides

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

White Papers

Structural Insulated Panel (SIP) Installation Design

Structural Screw Technology in Tall Wood Buildings

ASSY Screws vs. Lag Bolt

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

Substitution of Lag Screws with Wood Screws

CLT Special Provisions

Designing Timber Concrete Composite Systems (TCC) with ASSY Self-Tapping Screws

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