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Whether you are building some great looking 2 x 4 furniture or doing a bit of light framing, ProMax™ Optimized Thread Length™ flat head screws will make construction easier. The extra long unthreaded shank prevents cross-threading or jacking without the need for a clearance hole, and the 1/8" length system allows use of the longest screw possible without fear of backside protrusion. These Square Drive flat head screws have self drilling auger points, self countersinking nibs, and have a light “lube” finish suitable for interior, non-visible applications. Made in the USA/Canada/Taiwan. #2 Square Recess. Unthreaded Length 13/16"
ProMax™ Optimized Thread Length™: What It Means and Why You’ll Like It!Deck screws are a good example of Optimized Thread Length. The screws normally used to install 2 x 4’s or 2 x 6’s for decking are 3 inches long and have 1 inch of unthreaded shank. Since 2 x 4 and 2 x 6 deck material is 1-1/2 inches thick, the threads bridge the joint, as shown, resulting in an uneven and unsightly surface, or screws that are over-driven trying to “pull the board down.”
ProMax™ screws are different: Thread length is optimized to eliminate crossthreading, and the 1/8” length system allows use of the longest possible screw. In most cases, the smooth shank and self-drilling point allow installation without predrilling! Just select a screw that provides an unthreaded shank length equal to or slightly greater than the material thickness being fastened.
(based on 7 reviews)
of respondents would recommend this to a friend.
Reviewed by 7 customers
Displaying reviews 1-5
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Too short for holding in green wet 2x4
from Indio Ca.
About Me Avid Do-It-Yourselfer
Comments about 8 x 1-3/8 ProMax Wood Deck Screws, Unplated Steel, Flat Head, Square Drive:
They are great in dry lumber, but if you are fastening dry plywood to green dimension lumber they spin out. Before the head is in flush.
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A perfect screw
By Richard R
from Philadelphia, PA
I'm using these screws to fasten 3/4" wood to other wood that is also mostly 3/4" thick. This is the perfect screw. It's exactly the right length, it's threaded so that the fastented piece pulls tight, and I don't need to drill pilot holes.
Bottom Line Yes, I would recommend this to a friend
By Ron the Redneck
from Central Illinois
Perfect for pulling 1X material together. Highly recommended. Kudos to whomever dreamed this up.
useful screws on 1x wood
About Me Casual Do-It-Yourselfer
See all my reviews
very useful when connecting 1xs better thgan nails. If you have to disassemble any items its easy than pulling nails
ProMax Optimized Thread screws RULE!!!
from Maplewood, WI
Common sense design for holding popular sized lumber together. Clamps tight, period.