FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count,Black

I love them. Im a carpenter. I build decks. I use these anywhere code allows. They hold really good and when visible, they are easy on the eye. They are treated lumber and cedar friendly. They dont corrode or stain. In most cases, you dont need to pre-drill. Ive used them in a lot of different lengths ranging from 2 7/8 up to 10. One word of advice, you do need an impact driver, a regular drill-driver wont drive these.

Used on every deck I build

Great screws for attaching furring strips through continuous insulation sheeting on house exterior to studs. Only issue is that if they didnt give you three bits for the spider drive you may be out of luck because my impact broke the first bit about half way through. But since they give 3 bits you should be good.

I absolutely LOVE the HeadLOK fasteners. I have been buying them for the last year or so and have used them for various wood projects. I have stocked up on various sizes including 2-5/8, 4 1/2 and 6 screws. The go right in solid rough oak with no pre-drilling. Oops, made a mistake and have to take one out... no problem... They come right out as easy as they went in and they have a very nice looking flush mount. Right now I am using them for two projects at this moment. Shoring up an old barn and replacing the barn loft floor and building a 150 cow/calf corral, all in solid rough oak. I am getting ready to buy 4 more pales/buckets of the 4 1/2 to complete the corral project. I wouldnt switch or use any other screw for strength and ease of use. They out perform everything I have ever used previously.

What more can I say about big screws, they worked.

I used these screws to secure 1x4 furring strips in a rain screen design on the exterior walls of a new construction house. The work great for that purpose and I am confident in their being able to hold up over the long term. My guys were driving them through the 1x4s, 2 of foam board, 1/2 plywood and into 2x6 studs with a 1/2 cordless drill but I would suggest an impact driver or pre-drilling the holes for a much easier time and mush less splitting of the 1x4s or 2x6 studs.

Used to build a deck, these things literally saved the day, Ill continue to purchase these for any large wood project that I have to work on where full support is needed/required (deck footers/stairs/railing). Awesome product at a decent price (fairly expensive, but time saving).

Very good product

Works great, strong.

I love these. They looked great on my new cedar raised beds and they have a lot more gripping power than a traditional wood screw.