AutomotiveBathroomBuilding SuppliesCleaning SuppliesElectricalFlooringHardwareHeating & CoolingHoliday DecorationsHome DecorWindow TreatmentsKitchenLawn & GardenLighting & Ceiling FansMoulding & MillworkOutdoorsPaintPlumbingSmart Home, Security, Wi-FiSports & FitnessStorage & OrganizationToolsWindows & DoorsAppliancesAnimal & PetcareRefrigeratorsWashers & DryersBest SellersRentalGift CardsInstallationsCooktop InstallationDishwasher InstallationGarbage Disposal InstallationOver The Range Microwave InstallationRange Hood InstallationRange InstallationRefrigerator InstallationWall Oven InstallationWasher And Dryer InstallationBathroom Remodel InstallationCustom Shower Door InstallationLSink InstallationToilet InstallationVanity InstallationBlinds And Shades InstallationInterior Shutter InstallationWindow Treatment InstallationDoor InstallationGarage Door InstallationExterior Door InstallationWindow InstallationEV Charger InstallationStandby Generator InstallationCeiling Fan InstallationSmart Home InstallationSolar Power InstallationArtificial Grass InstallationDecking InstallationFence InstallationGutter InstallationPlayset InstallationRoof InstallationShed InstallationSiding InstallationSolar Power InstallationCarpet InstallationHardwood Floor InstallationLaminate Flooring InstallationTile Floor InstallationVinyl Floor InstallationHVAC InstallationHVAC ServiceInsulation InstallationWater Heater InstallationWater Treatment InstallationBathtub To Shower Conversion ServicesAccessible Home Virtual AssistantWheelchair Ramp InstallationHome Accessibility InstallationHome Organization InstallationAppliance InstallationBacksplash InstallationCabinet InstallationCabinet RefacingCountertop InstallationGarbage Disposal InstallationKitchen Design ServicesKitchen Sink Installation
Deals by Department
Shop All
More Ways to Save
Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.
SPAX 1/4-in x 3-in Black Coated Hex -Head Exterior Structural wood screws 12 -Pack
Item #3753140 |
Model #45718207007543
4.9
$8.67
Length Measurement: 3-in
Screw Thickness: 1/4-in
Package Quantity: 12
Delivery
Maximum Qty of 500
SPAX 1/4-in x 3-in Black Coated Hex -Head Exterior Structural wood screws 12 -Pack
4.9
$8.67
Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Learn MoreThe SPAX Factor - For the craftsman that concentrates on the details, We Work for You. For the Pro that puts qualify first, we help you create stronger connections, enhance performance and improve results when your reputation is on the line. Say Good Bye to your fathers traditional lag. SPAX PowerLags offer superior installation performance and durability over traditional lag screws and carriage bolts for structural wood construction. Made of carbon steel and coated for long term durability to ensure your project endures. U.S made SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.
Check out our Threads - Our patented thread serration technology allows the screw to be driven faster, easier to install, and reduces splitting in wood - Let the SPAX FACTOR take some of the hassle out of your next project
The ideal replacement for the conventional lag - IRC/IBC Code Compliant: TER-No 1912-07
True to size thread diameters, grade 5 heat treat, and the washer head style are just some of this fasteners distinct advantages - Tested under the toughest scenarios to give you confidence in every connection
Engineered and Manufactured in the USA
Common applications: Landscaping timber, deck ledger attachment, fencing, exterior treated lumber, structural wood to wood connections
SPAX 1/4-in Hex PowerLags require a 3/8-in Hex Driver
General | |||
|---|---|---|---|
Finish | Coated | Package Quantity | 12 |
Manufacturer Color/Finish | Black | Use Location | Exterior |
Series Name | PowerLags | Head Type | Hex |
Type | Structural wood screws | Thread Type | Coarse |
Material | Steel | Point Type | Sharp |
Dimensions | |||
|---|---|---|---|
Length Measurement | 3-in | Screw Thickness | 1/4-in |
Package Weight (lbs.) | 0.62 | ||
Features | |||
|---|---|---|---|
Drive | Hex | Multi-Material | No |
Materials Fastened | Wood to wood | ||
Certifications | |||
|---|---|---|---|
ACQ Approved | Yes | CA Residents: Prop 65 Warning(s) | No |
Warranty | |||
|---|---|---|---|
Warranty | Limited lifetime | ||
Compatibility | |||
|---|---|---|---|
For Use on Plastic | No | For Use on Concrete | No |
For Use on Composite | No | For Use on Drywall | No |
For Use on Metal | No | For Use on Brick | No |
For Use on Wood | Yes | For Use on Vinyl | No |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 31161500 | ||
Check out the Best Selling Lag Screws on Lowes.com
Review
26 Reviews
3 Star
0%
1 Star
0%
88% Recommend this product
Ratings may include incentivized customer reviews.
26 Customer Reviews
Lag Bolt Replacement for Treated Lumber
I purchased these Spax Lag Screws for a gazebo project and wanted something that was rated for treated lumber and was stronger than the galvanized lag bolts from the local farm store by-the-pound bin. I've used the 3" #10 torx screws by Spax and didn't have the first one to twist off below the head or strip out, so I'm betting that these Lag Screws will be of the same quality. Haven't used them yet and if they don't mark up then I'll post an updated review.
Poppy1June 10, 2025
From 3_SLASH_8-in x 5-in Black Coated Hex -Head Exterior Structural wood screws 150 -Pack Verified Purchaser
From 3_SLASH_8-in x 5-in Black Coated Hex -Head Exterior Structural wood screws 150 -Pack Verified Purchaser
Was this Review Helpful ?
Easy to use with battery drill
Very good to use on outside of house
DaveAugust 18, 2025
Verified Purchaser
Verified Purchaser
Was this Review Helpful ?
Tough and study
Strong, not 1 stripped or snapped during install. These were set subflush with an impact driver so I was not easy on the fastener.
MartyApril 11, 2023
From 1_SLASH_4-in x 6-in Black Coated Hex -Head Exterior Structural wood screws 50 -Pack Verified Purchaser
From 1_SLASH_4-in x 6-in Black Coated Hex -Head Exterior Structural wood screws 50 -Pack Verified Purchaser
Was this Review Helpful ?
Fair price for can liners.
Handy size for laundry room waste dryer sheets.
RodswoodcraftsNovember 1, 2024
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws 50 -Pack Verified Purchaser
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws 50 -Pack Verified Purchaser
Was this Review Helpful ?
Good screw
Product is easy to install and holds well.
May 2, 2024
From 3_SLASH_8-in x 6-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
From 3_SLASH_8-in x 6-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
Was this Review Helpful ?
As described
Good product great price
QualtiyTimeJune 18, 2024
Verified Purchaser
Verified Purchaser
Was this Review Helpful ?
Durability
Easy to work with
AltxApril 28, 2024
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
Was this Review Helpful ?
Great product!
Incredible grip! Started easy with no drilling necessary!
JonboySeptember 17, 2023
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
Was this Review Helpful ?
Good outdoor screw
a great screw to use outdoors for weather resistance
kenpotFebruary 11, 2022
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
From 1_SLASH_4-in x 2-in Black Coated Hex -Head Exterior Structural wood screws Verified Purchaser
Was this Review Helpful ?
2 Questions
2 Questions
Verified Pro Jay944 on September 14, 2023
1
Answer
RoseCotton on March 20, 2023
1
Answer
Thank you so much for taking the time to share your experience with our product!