Does it have a philip head or flat (unable to use a screw driver)?

The screws use Torx T40 deep recess bits. I use my heavy duty 18V Makita impact driver to drive these screws. I would not consider these screws for hand screw drivers at all; they require a lot of torque to drive, and a philips or flat head (or square drive) would not work. I always pilot all my holes for screws (takes a longer time, but no splits). I use a 7/32 drill bit on these screws; I founds 13/64" too binding, and 15/64" too loose - I spun a couple during my testing to find the right diameter, but 7/32" worked perfect for me. It draws single, sistered (and tripled) boards together, some crowned) to a perfect flat face. I understand that the screws are self cutting/drilling but in my experience and testing, I found piloting holes virtually eliminates the chance of splits, and allows for the threads to attain a near perfect concentric spiral cut. I tried a few screws without piloting in some scrap pieces, it bogged down my driver (Makita's most powerful impact driver), and the 4, 5, & 6 inch screws took forever to drive, and caused splits in the wood. Strongly recommend piloting holes, especially for the long term hold integrity.

How many for the price? 10? 50?

The listing on Amazon says a 50 pack for $35.44.

Does this stain cedar?

They’re coated, don’t rust, so they don’t stain.

Can i use it for concrete?

No, but there are numerous options for concrete screws. If you need a 5" screw into concrete you will need an expansive anchor, an epoxy set anchor, tapcons,or something similar. Don't know of any screw that will self tap into concrete more than an inch or so.

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Simpson Strong-Tie SDWS22500DB-R50 Strong-Drive SDWS Timber Screws (Exterior Grade), 0.220 Inch x 5 Inch, Double-Barrier Coated, Washer Head, Sawtooth Point, Tan (Pack of 50)

Product ID: 31650337

Details

Exterior Finish
Topcoat
Head Style
Washer Head
Item dimensions L x W x H
0.76 x 0.76 x
Material
Steel
Thread Size
3

⚡Sawtooth point for fast start

🔩0.22 inch diameter precision

🛡️Double-barrier corrosion defense

412.28 DT

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Description

🔧 Screw smarter, build stronger—don’t get left behind!

VERSATILE TIMBER MASTERY - Perfect for wood-to-wood ledger, CLT wall-to-wall, floor-to-floor, and lap joints—one screw, endless projects.
FLUSH FINISH NO SPLINTERS - Washer head with under-head nibs drives flush, preserving wood integrity and aesthetics.
BUILT TO BRAVE THE ELEMENTS - Double-barrier coating rivals hot-dip galvanization for superior exterior corrosion resistance.
EFFORTLESS DRIVE WITH TORX T 40 - 6-lobe drive ensures quick, slip-free installation—no predrilling needed in most cases.
SIMPSON STRONG TIE RELIABILITY - Engineered by industry pioneers for safer, stronger structures you can trust.

The Simpson Strong-Tie SDWS22500DB-R50 is a 5-inch, 0.22-inch diameter exterior-grade timber screw featuring a double-barrier coating for corrosion resistance equivalent to hot-dip galvanization. Equipped with a 6-lobe Torx T40 drive and sawtooth point, it enables fast, predrill-free installation. Designed for versatile wood-to-wood applications including mass timber connections, its washer head with under-head nibs ensures a flush, splinter-free finish. Trusted by professionals, this pack of 50 screws delivers durable, reliable fastening for demanding outdoor projects.

Specifications

ASIN	B0084KQUAC
Best Sellers Rank	#77,865 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #587 in Wood Screws
Brand	Simpson Strong-Tie
Color	tan
Compatible Groove Diameter	0.22 inches
Customer Reviews	4.8 out of 5 stars 173 Reviews
Drive System	Torx
Exterior Finish	Anti-Corrosion Topcoat
Fastener Size	5 inches
Fastener Type	Wood Screws
Finish Types	Double-Barrier Coating
Global Trade Identification Number	00746056005247
Grade Rating	Exterior
Head Style	Washer Head
Head Type	Washer Head
Included Components	Hardware,Fasteners & Hooks,structural-screws-and-bolts
Item Diameter	0.22 inches
Item Dimensions	0.76 x 0.76 x 5 inches
Item Type Name	50Pc 5" Struc 6L Screw
Item Weight	3 pounds
Item dimensions L x W x H	0.76 x 0.76 x 5 inches
Manufacturer	Simpson Strong-Tie
Material	Steel
Material Type	Steel
Maximum Shear Strength	50 kN
Metal Type	Alloy Steel
Model	HT-20B
Number Of Items	1
Number of Pieces	50
Outside Diameter	0.22 inches
Part Number	SDWS22500DB-R50
Point Style	Cupped Point
Screw Head Style	Washer Head
Screw Point Style	Cupped Point
Set Name	Pack of 50 Screws
Set Screw Thread Type	Unified National Fine (UNF)
Size Name	Pack of 1
Thread Class	fine
Thread Coverage	3
Thread Size	3
Thread Style	Right Hand
Thread Type	Unf
UPC	746056005247
Unit Count	1 Count
Warranty Description	12 months

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412.28 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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