SDS & SD8x1.25 Wood Screws

The Simpson Strong-Drive® screw (SDS) is a 1/4" diameter structural wood screw ideal for various connector installations as well as wood-to-wood applications. It installs with no predrilling and has been extensively tested in various applications. The SDS is improved with a patented new easy driving 4CUT™ tip and a corrosion resistant double-barrier coating.

Our line of Strong-Drive® SDS screws now includes stainless-steel versions and an 8" length of our original carbon-steel screw.

The SD8 #8x1 1/4" wafer head screw is ideal for miscellaneous fastening applications. The needle point ensures fast starts and deep #2 Phillips drive reduces cam-out and stripping.

Also see:

SDS Features:

The patented 4CUT tip has a square core and serrated threads to reduce installation torque and make driving easier with no predrilling and minimal wood splitting.
A new double-barrier coating finish provides corrosion resistance equivalent to hot-dip galvanization. Now one screw can handle interior, exterior and certain pressure-treated wood applications. See Corrosion Information.
3/8" hex washer head is stamped with the No-Equal sign and fastener length for easy indentification after installation.
Suitable for ledgers: The SDS is suitable for installing ledgers to meet the requirements of the
building codes. Please contact us for spacing and other information.

Material: Heat-treated carbon steel; some models available in stainless steel

STAINLESS STEEL: The SDS Strong-Drive 1/4" wood screw is known as an easy-to-install fastener solution for many of our connectors. Now the line has expanded to include stainless-steel SDS screws in 1 1/2" to 3 1/2" lengths suitable for some of our stainless-steel products. Offering the same easy-driving, split-reducing installation of the standard SDS screw, these screws are made from type 316 stainless steel. Also ideal for various wood-to-wood fastening applications, the new stainless-steel SDS screws are great for higher-exposure environments where maximum corrosion-resistance is required.

Finish:

SDS - New double-barrier coating. SDS screws may also be available yellow zinc dichromate or HDG (Not all sizes are available in all coatings - Contact Simpson Strong-Tie for product availability and ordering information).

SD8x1.25 - Electro Galvanized.

WARNING: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, the SD8 should be used in dry, interior, and noncorrosive environments only.

Allowable loads for SDS screws are based on ICC-ES Code Report ESR-2236. Screws may be provided with the 4CUT or Type 17 tip.
SDS screws install best with a low speed 1/2" drill with a 3/8" hex head driver.
Wood to wood applications are based on a wood thickness of 1 1/2" side member. All applications are based on full penetration into the main member.
Allowable loads are shown at the wood load duration factor of C_D=1.00. Loads may be increased for load duration by the building code up to a C_D=1.60.
Withdrawal loads shown are in pounds (lbs.) and are based on the entire threaded section installed into the main member. If thread penetration into the main member is less than the Thread Length as shown in the table, reduce allowable load by 172 lbs. x inches of thread not in main member. Use 121 lbs./inch for SPF.
DO NOT USE SD8x1.25 wood screws with structural connectors unless specifically stated in this catalog.
SD8 requires 3/4" minimum penetration.
Fasteners per Carton represent the quantity of screws which are available in bulk packaging. Screws are also available in mini bulk and retail packs. Refer to pricing information.
LSL wood-to-wood applications that require 4 1/2" and 6" SDS screws are limited to interior-dry use only.

Download the Simpson AutoCad Menu, which allows you to insert Ortho views directly into your AutoCAD drawing.

	ORTHOGRAPHIC	PERSPECTIVE
SD25800	None for this model	None for this model
SD8x1.25	SD8X1/4: DWG \| DXF SD8X1/4 front view: DWG \| DXF SD8X1/4 top view: DWG \| DXF	None for this model
SDS	None for this model	SDS Screw View 1: DWG \| DXF SDS Screw View 2: DWG \| DXF SDS Screw View 3: DWG \| DXF SDS Screw View 4: DWG \| DXF SDS Screw View 5: DWG \| DXF
SDS25112	None for this model	None for this model
SDS25134	None for this model	None for this model
SDS25200	None for this model	None for this model
SDS25212	None for this model	None for this model
SDS25300	None for this model	None for this model
SDS25312	None for this model	None for this model
SDS25412	None for this model	None for this model
SDS25600	None for this model	None for this model

					Legacy Reports
	IAPMO ES ER	ICC-ES ESR	CITY OF LOS ANGELES	STATE OF FLORIDA	ICC-ES NER	ICC-ES ER	ICC-ES ES
SD8x1.25	No code listing: Please contact us for test data.
SDS	See specific model numbers for code listings.
SDS25112		ESR-2236	RR25711	FL9589
SDS25134		ESR-2236	RR25711	FL9589
SDS25200		ESR-2236	RR25711	FL9589
SDS25212		ESR-2236	RR25711	FL9589
SDS25300		ESR-2236	RR25711	FL9589
SDS25312		ESR-2236	RR25711	FL9589
SDS25412		ESR-2236	RR25711	FL9589
SDS25600		ESR-2236	RR25711	FL9589
SDS25800		ESR-2236	RR25711	FL9589