
Which Deck Screws Brand Wins?
In our test we compared 11 deck screws options head to head. Grip Rite came out on top. See the measured results, the runner-up, the budget pick, and a link to the full test video.

Grip Rite
Price shown in test: $11 for 53 screws or 21 cents each
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GRK and Spax
Price shown in test: $15 for 59 screws or 25 cents each
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The quick take
The short version of why each pick lands where it does, built straight from the measured results.
“I like the Grip Rite. It came out on top with an average finish of 2.4, but I also like the GRK and Spax.”
Best in 1 of 2 measurements, including Drill Press Start Force.
The measured results
Every number below is read straight from the test. Products are listed in the order they finished.
Drive Torque
- 1Grip Rite
average 17 inch pounds (14, 18, 19), most of all brands at that point
- 2GRK
average 13.7 inch pounds (11, 16, 14)
- 3Spax
average 18 inch pounds (20, 20, 14), most of all brands at that point
- 4Deckmate
average 15 inch pounds (14, 15, 16)
- 5WoodPro
average 13 inch pounds, very consistent across all three screws
- 6Deck Drive
average 15.7 inch pounds (16, 15, 16)
- 7FastenMaster Guard Dog
average 16.7 inch pounds (16, 16, 18), most of all brands at that point
- 8PowerPro
average 14.7 inch pounds (14, 14, 16)
- 9Deck Plus
average 16.7 inch pounds (16, 20, 14)
- 10Velocity
average 12 inch pounds (12, 13, 11), the least of all brands, won this category
- 11Eagle Claw
average 17.3 inch pounds (16, 19, 17)
Coating After Pressure Treated 4 X 4
- 1Grip Rite
held up the best yet, looks nearly as good as new, rated 1 (best) alongside Spax
- 2GRK
held up better than average, small amount of metal exposure, rated 2 alongside PowerPro
- 3Spax
really good condition, no visible chipping, rated 1 alongside Grip Rite
- 4Deckmate
quite a bit of damage, exposed metal on threads and shaft
- 5WoodPro
held up better than Deckmate but with metal showing in several areas
- 6Deck Drive
in the best condition yet before driving, no visible chipping, but showed metal exposure to the threads after being driven, performing about the same as WoodPro
- 7FastenMaster Guard Dog
some chips noted, held up about the same as Deck Drive
- 8PowerPro
very good condition, no visible chipping, held up the best yet with very little metal exposure, rated 2 alongside GRK
- 9Deck Plus
really good condition before driving, no visible chipping, but quite a bit of metal showing on the threads after driving
- 10Velocity
some chips noted, did not hold up quite as well as some other brands
- 11Eagle Claw
no coating to damage, bare stainless steel
Coating After Oak
- 1Grip Rite
held up really well, small amount of metal exposure on outer edges, rated 1.5 alongside GRK
- 2GRK
held up much better than most other brands, rated 1.5 alongside Grip Rite
- 3Spax
performed the best of all brands with very little metal exposure
- 4Deckmate
quite a bit of damage with bare metal exposure
- 5WoodPro
a lot of damage but held up slightly better than Deckmate
- 6Deck Drive
a lot of wear and tear
- 7FastenMaster Guard Dog
held up fairly well
- 8PowerPro
held up the best yet with very little metal exposure
- 9Deck Plus
oak completely shredded the coating with lots of metal exposure
- 10Velocity
a lot of damage with lots of metal exposure
- 11Eagle Claw
no coating to damage, bare stainless steel
Impact Driver Speed
- 1Grip Rite
average 1.07 seconds, fourth fastest
- 2GRK
average 1.04 seconds, tied with Velocity
- 3Spax
average 1.09 seconds
- 4Deckmate
average 1.46 seconds
- 5WoodPro
average 0.88 seconds, second fastest, 40 percent faster than Deckmate
- 6Deck Drive
average 0.7 seconds, the fastest of all brands
- 7FastenMaster Guard Dog
average 1.97 seconds, nearly three times as long as Deck Drive
- 8PowerPro
average 1 second, third fastest
- 9Deck Plus
average 1.53 seconds, slower than average
- 10Velocity
average 1.04 seconds, tied with GRK
- 11Eagle Claw
average 1.23 seconds
Shear Load
- 1Grip Rite2,026 lb
came out on top of the shear load test
- 2GRK1,706 lb
- 3Spax1,660 lb
- 4Deckmate1,904 lb
- 5WoodPro2,549 lb
total, about 1,250 lb less than Deckmate
- 6Deck Drive2,816 lb
total, better than WoodPro but not as good as Deckmate
- 7FastenMaster Guard Dog3,099 lb2nd
total, moved into second place behind Deckmate at that point in the test
- 8PowerPro2,985 lb
- 9Deck Plus1,952 lb2nd
second place behind Grip Rite
- 10Velocity3,271 lb
total, fifth position behind Spax at that point in the test, did not make the final top five
- 11Eagle Claw2,702 lb
total, less shear strength than some of the other screws, did not make the final top five
Holding Strength Pull Out
- 1Grip Rite
average 698 lb (724, 704, 666), came out on top
- 2GRK
average 689 lb (692, 662, 714), third place
- 3Spax
average 693 lb (684, 698, 696), second place behind Grip Rite
- 4Deckmate
average 631 lb (606, 628, 660)
- 5WoodPro
average 615 lb (648, 614, 584)
- 6Deck Drive
average 585 lb (610, 596, 548), third place at that point in the test
- 7FastenMaster Guard Dog
average 660 lb (678, 624, 678), moved into the lead at that point in the test, finished fifth in the final ranking
- 8PowerPro
average 649 lb (660, 664, 622), second place at that point in the test
- 9Deck Plus
average 654 lb (634, 664, 664), second place at that point in the test
- 10Velocity
average 524 lb (452, 524, 596), gave up a lot faster than the competition, weakest performer
- 11Eagle Claw
average 674 lb (678, 652, 692), fourth place in the final ranking
Drill Press Start Force
- 1Grip Rite
not among the top performers, most brands including this one needed about 6 lb of downward force to start
- 2GRK4.4 lb
tied with Eagle Claw for least force needed, best of all brands
- 3Spax5.2 lb
one of the best performers
- 4Deckmate
could not start the screw after 10 seconds even with about 4.5 to 4.85 lb of downward force, eventually started at very close to 6 lb
- 5WoodPro
not among the top performers, most brands needed about 6 lb
- 6Deck Drive
not among the top performers
- 7FastenMaster Guard Dog
not among the top performers
- 8PowerPro
not among the top performers
- 9Deck Plus
not among the top performers
- 10Velocity
not among the top performers
- 11Eagle Claw4.4 lb
tied with GRK for least force needed, best of all brands
Corrosion After Acid
- 1Grip Rite
coating held up the best yet, no visible corrosion
- 2GRK
coating experienced quite a bit of damage but no visible rust
- 3Spax
metallic coating makes assessment hard, but appears to be in great shape
- 4Deckmate
coating destroyed by the acid but no visible rust
- 5WoodPro
no visible rust, looks about the same as Deckmate
- 6Deck Drive
acid ate away the coating but no rust
- 7FastenMaster Guard Dog
coating scrapes off easily but no visible rust
- 8PowerPro
acid removed most of the coating but no visible rust
- 9Deck Plus
part of the coating removed by drilling into oak but no visible corrosion
- 10Velocity
experienced quite a bit of corrosion compared to the other brands, worst performer on this test
- 11Eagle Claw
acid and salt caused some corrosion on the first screw tested, but a second screw tested with only the rusting agent experienced very little corrosion
How it was tested
- torque required to drive the screw
- coating condition after driving into a pressure treated 4x4
- coating condition after driving through 1 inch oak into a 4x4
- impact driver install speed
- shear load using an AR500 metal shear tester
- holding strength pulling the screw out of a 2x4
- downward force needed on a drill press to start the screw
- corrosion after 1 hour in sulfuric acid plus hydrogen peroxide, vinegar, and salt rusting agent
“I like the Grip Rite. It came out on top with an average finish of 2.4, but I also like the GRK and Spax.”


