ASSY VG CYL

Product Description

The ASSY VG CYL (Cylinder Head) screw is a fully threaded self-tapping wood screw engineered for timber reinforcement, beam repair, and connections where a small head is required for a clean, concealed, architectural finish.

With code-approved reliability, the ASSY VG CSK screw has been awarded an ICC-ESR approval in the United States and the Canadian Construction Materials Centre Reports (CCMC) approval in Canada. ASSY screws may also contribute to LEED 5.0 certification with up to 6 points, thanks to their Environmental Product Declaration (EPD) (available upon request) and recycled content.

Features

Diameters	1/4″ (6 mm) , 5/16″ (8 mm) , 3/8″ (10 mm)
Lengths	3-1/8″ (80 mm) to 31-1/2” (800 mm)

Small cylindrical head almost invisible when installed
Easily concealable with a wood plug
Zinc coating designed for dry service condition
Aggressive drill tip mimics a drill bit and bites into the wood and assures quick and easy installation
Ideal for incline wood-to-wood connections and wood reinforcement in timber framing, log home buildings, and mass & heavy timber construction
Can be used in Timber Concrete Composite systems, potentially replacing ASSY VG CSK
For more connection examples and information see our Design Guides
EPD available upon request
Manufactured by SWG

The range of available lengths and diameters makes the ASSY VG CYL suitable for a broad range of projects from log home building to multi-story mass timber construction. The ASSY VG CYL screw can also be used in beam upgrades and connections where a small screw head is required. ASSY fully threaded screws can be used in typical reinforcing applications, including checked or cracked members, potentially restoring them to nearly their full original strength.

Specifications

Specification	ASSY VG CYL				Thread Length		AW Drive Bit	Packaging Qty.
# Item	Material	Head Type	in.	mm	in.	mm
CYL0680	Hardened Steel	Cylinder Head	1/4 x 3 1/8	6 x 80	2 7/8	73	RW 30	100
CYL06100	Hardened Steel	Cylinder Head	1/4 x 4	6 x 100	3 5/8	93	RW 30	100
CYL06120	Hardened Steel	Cylinder Head	1/4 x 4 3/4	6 x 120	4 1/2	113	RW 30	100
CYL06140	Hardened Steel	Cylinder Head	1/4 x 5 1/2	6 x 140	5 1/4	133	RW 30	100
CYL06160	Hardened Steel	Cylinder Head	1/4 x 6 1/4	6 x 160	6	153	RW 30	100
CYL06180	Hardened Steel	Cylinder Head	1/4 x 7 1/8	6 x 180	6 3/4	173	RW 30	100
CYL06200	Hardened Steel	Cylinder Head	1/4 x 7 7/8	6 x 200	7 5/8	193	RW 30	100
CYL08120	Hardened Steel	Cylinder Head	5/16 x 4 3/4	8 x 120	4	104	RW 40	50
CYL08140	Hardened Steel	Cylinder Head	5/16 x 5 1/2	8 x 140	4 7/8	124	RW 40	50
CYL08160	Hardened Steel	Cylinder Head	5/16 x 6 1/4	8 x 160	5 5/8	144	RW 40	50
CYL08180	Hardened Steel	Cylinder Head	5/16 x 7 1/8	8 x 180	6 1/2	164	RW 40	50
CYL08200	Hardened Steel	Cylinder Head	5/16 x 7 7/8	8 x 200	7 1/4	184	RW 40	75
CYL08220	Hardened Steel	Cylinder Head	5/16 x 8 5/8	8 x 220	8	204	RW 40	75
CYL08240	Hardened Steel	Cylinder Head	5/16 x 9 1/2	8 x 240	8 7/8	224	RW 40	75
CYL08260	Hardened Steel	Cylinder Head	5/16 x 10 1/4	8 x 260	9 5/8	244	RW 40	75
CYL08280	Hardened Steel	Cylinder Head	5/16 x 11	8 x 280	10 3/8	264	RW 40	75
CYL08300	Hardened Steel	Cylinder Head	5/16 x 11 7/8	8 x 300	11 1/8	284	RW 40	75
CYL08330	Hardened Steel	Cylinder Head	5/16 x 13	8 x 330	12 3/8	314	RW 40	50
CYL08360	Hardened Steel	Cylinder Head	5/16 x 14 1/4	8 x 360	13 1/2	344	RW 40	50
CYL08380	Hardened Steel	Cylinder Head	5/16 x 15	8 x 380	14 3/8	364	RW 40	50
CYL08430	Hardened Steel	Cylinder Head	5/16 x 17	8 x 430	16 1/4	414	RW 40	25
CYL08480	Hardened Steel	Cylinder Head	5/16 x 19	8 x 480	18 1/4	464	RW 40	25
CYL08530	Hardened Steel	Cylinder Head	5/16 x 20 7/8	8 x 530	20 1/4	514	RW 40	25
CYL08580	Hardened Steel	Cylinder Head	5/16 x 22 7/8	8 x 580	22 1/4	564	RW 40	25
CYL10180	Hardened Steel	Cylinder Head	3/8 x 7 1/8	10 x 180	6 1/2	165	RW 50	50
CYL10200	Hardened Steel	Cylinder Head	3/8 x 7 7/8	10 x 200	7 1/4	185	RW 50	50
CYL10220	Hardened Steel	Cylinder Head	3/8 x 8 5/8	10 x 220	8 1/8	205	RW 50	50
CYL10240	Hardened Steel	Cylinder Head	3/8 x 9 1/2	10 x 240	8 7/8	225	RW 50	50
CYL10260	Hardened Steel	Cylinder Head	3/8 x 10 1/4	10 x 260	9 5/8	245	RW 50	50
CYL10280	Hardened Steel	Cylinder Head	3/8 x 11	10 x 280	10 3/8	265	RW 50	50
CYL10300	Hardened Steel	Cylinder Head	3/8 x 11 7/8	10 x 300	11 1/4	285	RW 50	50
CYL10320	Hardened Steel	Cylinder Head	3/8 x 12 5/8	10 x 320	12	305	RW 50	50
CYL10340	Hardened Steel	Cylinder Head	3/8 x 13 3/8	10 x 340	12 3/4	325	RW 50	50
CYL10360	Hardened Steel	Cylinder Head	3/8 x 14 1/4	10 x 360	13 5/8	345	RW 50	50
CYL10380	Hardened Steel	Cylinder Head	3/8 x 15	10 x 380	14 3/8	365	RW 50	50
CYL10400	Hardened Steel	Cylinder Head	3/8 x 15 3/4	10 x 400	15 1/8	385	RW 50	50
CYL10430	Hardened Steel	Cylinder Head	3/8 x 17	10 x 430	16 3/8	415	RW 50	25
CYL10480	Hardened Steel	Cylinder Head	3/8 x 19	10 x 480	18	456	RW 50	25
CYL10530	Hardened Steel	Cylinder Head	3/8 x 20 7/8	10 x 530	19 7/8	506	RW 50	25
CYL10580	Hardened Steel	Cylinder Head	3/8 x 22 7/8	10 x 580	21 7/8	556	RW 50	25
CYL10650	Hardened Steel	Cylinder Head	3/8 x 25 5/8	10 x 650	24 5/8	626	RW 50	25
CYL10700	Hardened Steel	Cylinder Head	3/8 x 27 5/8	10 x 700	26 5/8	676	RW 50	25
CYL10750	Hardened Steel	Cylinder Head	3/8 x 29 1/2	10 x 750	28 5/8	726	RW 50	25
CYL10800	Hardened Steel	Cylinder Head	3/8 x 31 1/2	10 x 800	30 1/2	776	RW 50	25

Product	ASSY VG CYL Diameter	File Extension
ASSY VG CYL	1/4	6
ASSY VG CYL	5/16	8
ASSY VG CYL	3/8	10
ALL ABOVE

Product

ASSY VG CYL Diameter

File Extension

in.

mm.

.DXF

ASSY VG CYL

1/4

ASSY VG CYL

5/16

ASSY VG CYL

3/8

ALL ABOVE

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Cylinder Head Fully Threaded Self-Tapping Wood Screw

Cylinder Head

Fully Threaded

Tapping Tip

Wood Reinforcement

Product Description

Features

Specifications

2D & 3D Geometry

Design Guides

Code Approvals

ICC Code Approval ESR 3178 for Fully Threaded Screws - 2024 Edition

CCMC Code Approval 13677-R

ISO 50001 Certification for ASSY Fasteners

LA Research Report (LARR): RR 26072

White Papers

Supplementary Considerations for the Conventional Yield Model

Screw Buckling Values for Compression Perpendicular to Grain Reinforcement

Withdrawal Resistances of ASSY Screws at Various Angles to the Grain

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

Purlin to Beam Connections Using ASSY Fully Threaded Fasteners

Roof-to-Wall Connections (Truss Uplift)

ASSY Screws vs. Lag Bolt

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

Technical Blogs

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