Hitools

SDWS22 Timber Screw

Model: SDWS22

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The Strong‑Drive^® SDWS is the 2nd generation structural screw, redesigned with a patented SawTooth™ Point. It delivers faster starts, less torque, and eliminates the need for pre-drilling, which means more screws installed and less labour for you compared to conventional installation. All this reduces tool wear and extends your battery life!

The SDWS is the advanced alternative to bolting timber, or batten and coach screws, being 30% faster and 10% stronger than an equivalent batten screw. Designed to be versatile the SDWS is recognised as a solution for timber connections and is backed by testing and load data.

Material

Carbon Steel

Finish

Double Barrier Coating — Suitable for interior, treated timber and external applications

Features & Benefits

6-lobe T-40 drive eliminates cam outs, for easier installations and longer bit life — bit(s) included
Head stamped for easy identification of length and diameter, for building certification
Large Washer Head provides superior clamping, while nibs offer greater control for the installer when seating the head
Bold Threads design provides superior holding power, even into the end grain of timber
Patented SawTooth™ Point for faster starts, less torque and no pre-drilling

Applications

Landscaping
Structural Timber Framing — It replaces strapping, which means, no interference with wall cladding
Lintel Screw, Coach Screw, Lag Screw, Landscape Screw, Structural Screw, Ledger Screw, Retaining Wall Screw, Boundary Joist Screw

Model No. Table

Model	Head Marking (##)	Screw Length (mm)	Thread Length1,2 (mm)	Diameter (mm)			Fastener Strength
Model	Head Marking (##)	Screw Length (mm)	Thread Length1,2 (mm)	Shank	Major	Minor	Bending Yield Strength3 (Mpa)	Characteristic Yield Moment4 (kNmm)	Tension5 (kN)	Shear5 (kN)
SDWS22300DB	3	76	38	5.6	8.0	5.0	1103	17.9	10.5	6.1
SDWS22400DB	4	102	60
SDWS22500DB	5	127	70
SDWS22600DB	6	152					1207
SDWS22800DB	8	203
SDWS221000DB	10	254

For the purpose of measuring overall length, fasteners shall be measured from the underside of the head to bottom of the point.
Length of thread includes the point.
Bending yield strength determined following ASTM F1575 and based on minor thread diameter.
Characteristic yield moment determined following EU14358 and based on minor thread diameter.
Tension and shear properties are based on 0.5 of the average maximum load for screws tested in tension and shear, respectively. Shear strength is shear through the threads.

Table 2. Strong-Drive^® SDWS Timber Screw Limit States-Reference Characteristic Load Values (N) for Timber-to-Timber Connections1,2,3,4,5

Model	Screw Length (mm)	Timber Joint Group	Characteristic Shear Loads (N)									Characteristic Withdrawal Capacity (N/mm)6
			Timber Side Member Thickness									Face Grain	End Grain7
			35	45	63	70	90	100	115	150	200	Face Grain	End Grain7
SDWS22300DB	76	JD4	6630	—	—	—	—	—	—	—	—	88	62
SDWS22300DB	76	JD5	4995	—	—	—	—	—	—	—	—	82	50
SDWS22400DB	102	JD4	7400	6100	6100	—	—	—	—	—	—	112	69
SDWS22400DB	102	JD5	6000	6000	4545	—	—	—	—	—	—	91	54
SDWS22500DB	127	JD4	7400	7400	6100	5655	5655	—	—	—	—	134	110
SDWS22500DB	127	JD5	6000	6000	6000	3920	3920	—	—	—	—	93	78
SDWS22600DB	152	JD4	7550	7550	7550	7550	5865	5865	5840	—	—	134	110
SDWS22600DB	152	JD5	6030	6030	6030	6030	5220	5220	4385	—	—	93	78
SDWS22800DB	203	JD4	8055	8055	8055	8055	7040	7040	7040	6100	—	134	110
SDWS22800DB	203	JD5	6240	6240	6240	6240	5500	5500	5500	5485	—	93	78
SDWS221000DB	254	JD4	8055	8055	8055	8055	7040	7040	7040	7040	6100	134	110
SDWS221000DB	254	JD5	6240	6240	6240	6240	5500	5500	5500	5500	5500	93	78

Conditions without numbers in the matrix shall not be used.
The main and side members shall have a minimum density of 530 kg/m3
for JD4, or 450 kg/m3 for JD5.
The tabulated characteristic shear loads and withdrawal are for normal duration of load.
Screws shall be installed straight into the side grain of the wood main member with the screw axis at a 90-degree angle to the wood fibres.
Minimum fastener penetration shall be equal to the screw length less the thickness of the wood side member.
Tabulated characteristic values for withdrawal are in N/mm
of thread length into the main member
Withdrawal to end grain values are based on the lesser value of withdrawal from the main member or the characteristic pull-through of the screw through a 35 mm thick side member of the same Joint Group, or tensile strength of the screw.

Specifications - SDWS

Model No.	Size (mm)	Thread	Point	Head	Material & Finish	Box Qty	Drive Size	Replacement Bit
These fasteners possess a level of corrosion resistance that makes them suitable for use in some exterior and corrosive environments and with some preservative-treated timber. For applications in higher-exposure applications, consider Type-300 series stainless-steel fasteners for superior corrosion resistance. Bit(s) included with every box of screws. Pre-drilling and countersink may be necessary at ends, butt joints, and on applications where denser material is used. Follow board manufacturers recommendations where applicable.
SDWS22300DB-R12	5.6 x 76	Bold Threads	SawTooth^TM Point	Washer Head	Carbon Steel Double Barrier Coating	12	T-40, 6-lobe	BIT40T-134-RC3
SDWS22400DB-R12	5.6 x 102
SDWS22500DB-R12	5.6 x 127
SDWS22600DB-R12	5.6 x 152
SDWS22800DB-R12	5.6 x 203
SDWS221000DB-R12	5.6 x 254
SDWS22300DB-R50	5.6 x 76					50
SDWS22400DB-R50	5.6 x 102
SDWS22500DB-R50	5.6 x 127
SDWS22600DB-R50	5.6 x 152
SDWS22800DB-R50	5.6 x 203
SDWS221000DB-R50	5.6 x 254
SDWS22300DB	5.6 x 76					950
SDWS22400DB	5.6 x 102					600
SDWS22500DB	5.6 x 127					600
SDWS22600DB	5.6 x 152					500
SDWS22800DB	5.6 x 203					400
SDWS221000DB	5.6 x 254					250

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