SPAX 1/4" x 3-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant

Love spax screws, very durable, easy to install with a drill and saves time drilling for carriage bolts, washers and nuts. Same strength. I use these when putting A frames together for outdoor swings I build.

Well made. Perfect for my purpose.

Thick. Looking forward to using this type head which seems to be reviewed well by different sites as well.

I used several hundred of these screws on a small cattle barn and corral I built. They have plenty of holding power. Only one broke and I’m pretty sure that was my fault. Be sure to use with a good impact driver!!

General exterior work

Great structural screw for use in treated lumber and composite lumber. I used in building a large deck with composite lumber, has great pullout resistance and corrosion resistance and the washer head holds pieces together tight.

Great product

TLDR: Spax stands behind their product and provides great customer support; will definitely buy again. I don't leave reviews very often, but I was so impressed I thought this was worth sharing. I was doing a large project on my deck and was replacing some old posts/railings. These screws arrived and they were not an actual .250" diameter; they were thinner (.200", if I recall correctly). The rest of the hardware I was using would not work as well with those tolerances, so I returned them. These screws are shipped directly from Spax, and not an Amazon warehouse. The only return option available to me was shipping them back to Spax via UPS. When I took the screws to The UPS Store along with several other Amazon returns, the UPS employee slapped a label on it and gave me a receipt. As time passed and I realized my refund hadn't come yet, I checked the tracking number and realized a mistake was made. The UPS employee printed the wrong shipping label and the bucket of screws was sent back to the wrong location (UPS said it went to an Amazon return center in another state instead of shipping it back to Spax like they were supposed to). I spoke to four people from UPS who took no responsibility for the mistake (including the employee who made the mistake and a manager) and UPS ultimately told me to talk to Amazon; UPS said Amazon got it, so Amazon should give me a refund. The Amazon rep understood the issue but was unable to explain it very well to Spax; the Amazon rep also stated it was UPS's mistake and did not understand why UPS didn't do something to help me. I agreed and was pretty frustrated at this point. The Amazon rep asked Spax to reach out to me, the customer. I was able to send the Spax rep screenshots and pictures, and the Spax rep immediately owned the situation. They processed the refund without delay and gained one very satisfied customer.