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Simpson Strong-TieStructural Screws HT-20B 50Pc 5" Struc 6L Screw, Pack of 1

Q: 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.

Q: How many for the price? 10? 50?

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

Q: Does this stain cedar?

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

Q: 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.

4.6/5

Product ID: 388199830

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Details

Material
Steel
Drive System
Torx
Head Style
Flat
Item dimensions L x W x H
0.76 x 0.76 x
Exterior Finish
Coating

Frequently Bought Together

Description

Simpson Strong-TieStructural Screws HT-20B 50Pc 5" Struc 6L Screw, Pack of 1

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

How many for the price? 10? 50?

Does this stain cedar?

Can i use it for concrete?

Common Questions

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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