Best Stainless Steel Decking Screws 40mm of 2026

Last updated on 14/01/2026
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Most Relevant
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1
Terrace Screws Stainless Steel A2: 4 x 40 mm, Countersunk Head, Reduced TORX, Diameter 4 x 40 mm | Wood Screws 40 mm Patios/Boards/Cladding | Stainless Steel A2 (V2A/304) | 2 Bits Included: Pack of

Terrace Screws Stainless Steel A2: 4 x 40 mm, Countersunk Head, Reduced TORX, Diameter 4 x 40 mm | Wood Screws 40 mm Patios/Boards/Cladding | Stainless Steel A2 (V2A/304) | 2 Bits Included: Pack of

ProRaje
Why we love it
  • Durable and rust-resistant screws.
  • Includes handy Torx bits.
  • Perfect for various woodworking projects.
Main Highlights
  • Application: wood screw for fixing wood and composite decking. Can also be used for fixing boards, flower beds, floorboards, cladding, carpenters, etc
  • Rust-free – stainless steel A2 – V2A – AISI 304. Unlike yellow or galvanised steel, this screw made of A2 stainless steel is corrosion resistant and does not rust. Thus, it is suitable for indoor and outdoor use, even in damp environments.
  • Box contents: 1000 decking screws diameter 4 x 40 mm, A2 stainless steel, with 2 Torx bits TX20 included. Supplied in 2 boxes with 500 screws each. Also available in other pack sizes.
  • Advantages: The reduced countersunk head provides an unobtrusive, aesthetic and professional finish. The Torx socket guarantees easy and precise screwing. The gap protection tip prevents the wood from splintering.
  • Our tips: for hardwoods such as exotic woods, we strongly recommend pre-drilling and milling to ensure a perfect attachment. For softwoods such as softwoods, the screw connection can be done directly, pre-drilling and milling guarantees a perfect finish. Always wear gloves when handling screws.
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9.8
Exceptional
9.8
Exceptional
ProRaje

Terrace Screws Stainless Steel A2: 4 x 40 mm, Countersunk Head, Reduced TORX, Diameter 4 x 40 mm | Wood Screws 40 mm Patios/Boards/Cladding | Stainless Steel A2 (V2A/304) | 2 Bits Included: Pack of

Why we love it
  • Durable and rust-resistant screws.
  • Includes handy Torx bits.
  • Perfect for various woodworking projects.
Main Highlights
  • Application: wood screw for fixing wood and composite decking. Can also be used for fixing boards, flower beds, floorboards, cladding, carpenters, etc
  • Rust-free – stainless steel A2 – V2A – AISI 304. Unlike yellow or galvanised steel, this screw made of A2 stainless steel is corrosion resistant and does not rust. Thus, it is suitable for indoor and outdoor use, even in damp environments.
  • Box contents: 1000 decking screws diameter 4 x 40 mm, A2 stainless steel, with 2 Torx bits TX20 included. Supplied in 2 boxes with 500 screws each. Also available in other pack sizes.
  • Advantages: The reduced countersunk head provides an unobtrusive, aesthetic and professional finish. The Torx socket guarantees easy and precise screwing. The gap protection tip prevents the wood from splintering.
  • Our tips: for hardwoods such as exotic woods, we strongly recommend pre-drilling and milling to ensure a perfect attachment. For softwoods such as softwoods, the screw connection can be done directly, pre-drilling and milling guarantees a perfect finish. Always wear gloves when handling screws.
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Value for Money
2
SPAX T-Star Plus 0537000500403 Terrace Screws Stainless Steel A2 5.0 x 40 mm Pack of 200 Cylinder Head Fxing Thread Cut Tip

SPAX T-Star Plus 0537000500403 Terrace Screws Stainless Steel A2 5.0 x 40 mm Pack of 200 Cylinder Head Fxing Thread Cut Tip

SPAX
8% Off
Why we love it
  • High corrosion resistance assured.
  • Extremely easy countersinking.
  • Made in Germany.
Main Highlights
  • Use: outdoor use when building terraces. High corrosion resistance thanks to stainless steel A2
  • Small cylinder head: easy countersinking with reduced splitting effect. Fixing thread for firm and permanent connection of two woods, reduces creaking noise. Optimum power transmission and clean fit with SPAX bit T-Star plus T25
  • Effortless work and longer battery life: Precise attachment and reduction of the splicing effect thanks to the drilling function of the CUT tip with sharp, spear-like shape. Pre-drilling is recommended for hardwoods
  • Made in Germany – approved by building authorities: European technical approval for screws as wood fasteners in load-bearing wooden constructions (ETA-12/0114)
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9.8
Exceptional
9.8
Exceptional
SPAX

SPAX T-Star Plus 0537000500403 Terrace Screws Stainless Steel A2 5.0 x 40 mm Pack of 200 Cylinder Head Fxing Thread Cut Tip

8% Off
Why we love it
  • High corrosion resistance assured.
  • Extremely easy countersinking.
  • Made in Germany.
Main Highlights
  • Use: outdoor use when building terraces. High corrosion resistance thanks to stainless steel A2
  • Small cylinder head: easy countersinking with reduced splitting effect. Fixing thread for firm and permanent connection of two woods, reduces creaking noise. Optimum power transmission and clean fit with SPAX bit T-Star plus T25
  • Effortless work and longer battery life: Precise attachment and reduction of the splicing effect thanks to the drilling function of the CUT tip with sharp, spear-like shape. Pre-drilling is recommended for hardwoods
  • Made in Germany – approved by building authorities: European technical approval for screws as wood fasteners in load-bearing wooden constructions (ETA-12/0114)
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3
40mm Wood Screws, Torx Drive, Flat countersunk T-Star Plius Muti Head, Ground Serrated, 4cut Point Self Tapping Rust-Free A2 Stainless Steel Spax Decking Screw 3,5x40/23mm Fastener (200 pcs)

40mm Wood Screws, Torx Drive, Flat countersunk T-Star Plius Muti Head, Ground Serrated, 4cut Point Self Tapping Rust-Free A2 Stainless Steel Spax Decking Screw 3,5x40/23mm Fastener (200 pcs)

Keple
Why we love it
  • High torque absorption efficiency.
  • Clean flush wood countersinking.
  • Rust-free stainless steel.
Main Highlights
  • SPAX T-STAR PLUS RECESS - Offers all the advantages of the SPAX T-STAR recess (no cam-out effect, minimisation of the contact force, absorption of high torques). In addition, this recess has a small depression in the screw head below the drive surfaces into which the matching SPAX T-STAR plus BIT with centre pin can be precisely inserted. This plus connection ensures the optimum transmission of torque, a long service life and a perfect fit. Even working overhead is easy.
  • SPAX MULTI HEAD - This head has recessed pocket segments. Edges are thus formed between the individual segments, which have a milling effect when they come into contact with wood. The head is countersunk into the wood cleanly and flush. SPAX MULTI head is used to fasten a metal fitting, the non-recessed surfaces of the head brake the screw as it comes into contact with the metal fitting. This effectively prevents overtightening of the screw and creates a strong connection.
  • RUST-FREE A2 STAINLESS STEEL - Screws made of stainless steel are particularly suitable for use outdoors or in humid areas. They are available in A2 stainless steel for outdoor applications where they are directly exposed to the elements, as well as for humid indoor spaces (e.g. kitchen and bathroom). Stainless steel is characterised by a high chrome content. This forms a protective layer on the surface of the material.
  • 4CUT POINT & SERRATED THREAD - The 4CUT point enables fastening without pre-drilling (depending on the wood). This is achieved through its special screw tip. The arrow shape pushes through the fibres of the wood, ensuring a fast grip. This effectively prevents the material from splitting. The advantage of a thread with a ground serrations compared to a conventional thread is that it can cut through the fibres of the wood more easily. This works in a similar manner to a serrated knife.
  • UNIVERSAL WOOD SCREW - Prfect for the roof constructions, terrace decks, stairs, garden furniture, Sauna, indor and outdoor applications, patios, outdoor siding, fences and various wood joints. (Special tools required)
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9.7
Exceptional
9.7
Exceptional
Keple

40mm Wood Screws, Torx Drive, Flat countersunk T-Star Plius Muti Head, Ground Serrated, 4cut Point Self Tapping Rust-Free A2 Stainless Steel Spax Decking Screw 3,5x40/23mm Fastener (200 pcs)

Why we love it
  • High torque absorption efficiency.
  • Clean flush wood countersinking.
  • Rust-free stainless steel.
Main Highlights
  • SPAX T-STAR PLUS RECESS - Offers all the advantages of the SPAX T-STAR recess (no cam-out effect, minimisation of the contact force, absorption of high torques). In addition, this recess has a small depression in the screw head below the drive surfaces into which the matching SPAX T-STAR plus BIT with centre pin can be precisely inserted. This plus connection ensures the optimum transmission of torque, a long service life and a perfect fit. Even working overhead is easy.
  • SPAX MULTI HEAD - This head has recessed pocket segments. Edges are thus formed between the individual segments, which have a milling effect when they come into contact with wood. The head is countersunk into the wood cleanly and flush. SPAX MULTI head is used to fasten a metal fitting, the non-recessed surfaces of the head brake the screw as it comes into contact with the metal fitting. This effectively prevents overtightening of the screw and creates a strong connection.
  • RUST-FREE A2 STAINLESS STEEL - Screws made of stainless steel are particularly suitable for use outdoors or in humid areas. They are available in A2 stainless steel for outdoor applications where they are directly exposed to the elements, as well as for humid indoor spaces (e.g. kitchen and bathroom). Stainless steel is characterised by a high chrome content. This forms a protective layer on the surface of the material.
  • 4CUT POINT & SERRATED THREAD - The 4CUT point enables fastening without pre-drilling (depending on the wood). This is achieved through its special screw tip. The arrow shape pushes through the fibres of the wood, ensuring a fast grip. This effectively prevents the material from splitting. The advantage of a thread with a ground serrations compared to a conventional thread is that it can cut through the fibres of the wood more easily. This works in a similar manner to a serrated knife.
  • UNIVERSAL WOOD SCREW - Prfect for the roof constructions, terrace decks, stairs, garden furniture, Sauna, indor and outdoor applications, patios, outdoor siding, fences and various wood joints. (Special tools required)
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4
INNONEXXT® Premium Stainless Steel decking Screws A2 incl. bit | 5.0 x 40 mm 200 Pieces TX25 | Milling Ribs, Cut tip | Wood Screws, Screws for Wood, Stainless Steel Screws | Made in Germany

INNONEXXT® Premium Stainless Steel decking Screws A2 incl. bit | 5.0 x 40 mm 200 Pieces TX25 | Milling Ribs, Cut tip | Wood Screws, Screws for Wood, Stainless Steel Screws | Made in Germany

INNONEXXT
Why we love it
  • Smooth Torx drive ensures precision.
  • Ideal for various wood types.
  • Unbeatable industrial quality guaranteed.
Main Highlights
  • Precise and precise with the help of the smooth Torx drive and the high-quality lubricating coating, screwing is child's play. The TX hexagon socket allows easy and safe screwing in from the attachment to the countersinking of the screw
  • Quick and easy your ideal wood screw for the removal of your wooden construction. With countersunk head and milling ribs under the head and with cut tip
  • Application Ideal for plastics, chipboard and hardwoods in terrace construction as well as for IPE Teak Cumaru, Sucupira wood, WBC panels. Industrial quality including CE conformity at unbeatable prices
  • International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
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9.6
Superb
9.6
Superb
INNONEXXT

INNONEXXT® Premium Stainless Steel decking Screws A2 incl. bit | 5.0 x 40 mm 200 Pieces TX25 | Milling Ribs, Cut tip | Wood Screws, Screws for Wood, Stainless Steel Screws | Made in Germany

Why we love it
  • Smooth Torx drive ensures precision.
  • Ideal for various wood types.
  • Unbeatable industrial quality guaranteed.
Main Highlights
  • Precise and precise with the help of the smooth Torx drive and the high-quality lubricating coating, screwing is child's play. The TX hexagon socket allows easy and safe screwing in from the attachment to the countersinking of the screw
  • Quick and easy your ideal wood screw for the removal of your wooden construction. With countersunk head and milling ribs under the head and with cut tip
  • Application Ideal for plastics, chipboard and hardwoods in terrace construction as well as for IPE Teak Cumaru, Sucupira wood, WBC panels. Industrial quality including CE conformity at unbeatable prices
  • International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
Show More
5
200 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

200 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

Generic
26% Off
Why we love it
  • Compact head for easy installation.
  • Totally rust proof for durability.
  • Large pack for versatile use.
Main Highlights
  • 200 x Black 403 Martensitic Semi Magnatic Grade Stainless Steel Small Head diameter T15 TORX Screws
  • These screws are know as trim head, meaning they are very compact in head diameter. 6mm
  • Full anti corrosion - Totally rust proof, and discrete
  • Pack OF 200 - 4mm x 40mm length, 6mm diameter head
Show More
9.6
Superb
9.6
Superb
Generic

200 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

26% Off
Why we love it
  • Compact head for easy installation.
  • Totally rust proof for durability.
  • Large pack for versatile use.
Main Highlights
  • 200 x Black 403 Martensitic Semi Magnatic Grade Stainless Steel Small Head diameter T15 TORX Screws
  • These screws are know as trim head, meaning they are very compact in head diameter. 6mm
  • Full anti corrosion - Totally rust proof, and discrete
  • Pack OF 200 - 4mm x 40mm length, 6mm diameter head
Show More
6
Wood Screws, 5mm x 40mm TORX, Semi-Round Head, C4 Corrosion Protection, Self-Drilling, Stainless Steel, Galvanised, for Outdoor, Decking, Fence, Exterior Woodscrews - Pack of 250

Wood Screws, 5mm x 40mm TORX, Semi-Round Head, C4 Corrosion Protection, Self-Drilling, Stainless Steel, Galvanised, for Outdoor, Decking, Fence, Exterior Woodscrews - Pack of 250

Keple
Why we love it
  • Built to last outdoors.
  • Quick and easy installation.
  • Perfect for various projects.
Main Highlights
  • Superior Durability for All Conditions - Constructed from stainless steel with C4 corrosion protection, these wood screws are designed to withstand harsh outdoor environments.
  • Effortless Installation - Featuring a TORX drive and self-drilling capability, these screws ensure quick and easy installation, reducing the need for pre-drilling; perfect for both DIY enthusiasts and professionals.
  • Versatile Applications - These 5x40mm wood screws offering excellent performance for various outdoor projects, use them for decking, fencing, and more.
  • Quality - Our screws meet stringent standards, guaranteeing high-quality and reliable performance, backed by rigorous testing and certification processes for exterior wood screws.
  • Comprehensive Assortment - Available in multiple sizes including 40mm and 50mm options, these screws come in a convenient box for easy storage and access; suitable for a wide range of woodwork projects, including chipboard and floorboards.
Show More
9.6
Superb
9.6
Superb
Keple

Wood Screws, 5mm x 40mm TORX, Semi-Round Head, C4 Corrosion Protection, Self-Drilling, Stainless Steel, Galvanised, for Outdoor, Decking, Fence, Exterior Woodscrews - Pack of 250

Why we love it
  • Built to last outdoors.
  • Quick and easy installation.
  • Perfect for various projects.
Main Highlights
  • Superior Durability for All Conditions - Constructed from stainless steel with C4 corrosion protection, these wood screws are designed to withstand harsh outdoor environments.
  • Effortless Installation - Featuring a TORX drive and self-drilling capability, these screws ensure quick and easy installation, reducing the need for pre-drilling; perfect for both DIY enthusiasts and professionals.
  • Versatile Applications - These 5x40mm wood screws offering excellent performance for various outdoor projects, use them for decking, fencing, and more.
  • Quality - Our screws meet stringent standards, guaranteeing high-quality and reliable performance, backed by rigorous testing and certification processes for exterior wood screws.
  • Comprehensive Assortment - Available in multiple sizes including 40mm and 50mm options, these screws come in a convenient box for easy storage and access; suitable for a wide range of woodwork projects, including chipboard and floorboards.
Show More
7
VIGRUE Decking Screws 5 x 60 Set of 300 Plank Screws 5 x 40 mm, 5 x 50 mm, 5 x 60 mm, 5 x 70 mm, Hardened Stainless Steel C1 Screws, Torx 25, Includes Stainless Steel Bit

VIGRUE Decking Screws 5 x 60 Set of 300 Plank Screws 5 x 40 mm, 5 x 50 mm, 5 x 60 mm, 5 x 70 mm, Hardened Stainless Steel C1 Screws, Torx 25, Includes Stainless Steel Bit

VIGRUE
Main Highlights
  • High-quality stainless steel: made of C1 stainless steel with good weather resistance and corrosion resistance. Equipped with a countersunk head and serrated, ground local threads, it is ideal for joining decking to wooden substructures. The internal star transmission ensures high power transmission and makes tightening safer and without wobbling. Self-tapping drill bits with cutouts allow precise positioning and easy screwing into wood
  • Various sizes: the VIGRUE 300-piece patio screw set contains different common sizes, 5 x 40 mm, 5 x 50 mm, 5 x 60 mm, 5 x 70 mm to meet different requirements, and is equipped with a Torx 25-bit
  • Widely used: with hardened stainless steel screws for wooden patios, decking, wooden cladding and wooden facades, you rely on the highest quality. These specially designed screws are ideal for woods such as Douglas fir, bangkirai, larch, robinia and pine. Ensure the stability and longevity of your project with these screws, whether it is when building a wooden patio or beautifying wooden facades
  • Easy to carry and store: All stainless steel screws for patios are carefully packaged in durable plastic boxes that offer different packaging lengths and styles. The packaging is neatly arranged, easy to open, search and transport to provide you with a convenient user experience for your project
  • Professional service: We offer customers 24-hour online customer service and are responsible for product quality. If there is a quality problem during use, please contact us. Our goal is to offer our customers the best products and services
Show More
9.6
Superb
9.6
Superb
VIGRUE

VIGRUE Decking Screws 5 x 60 Set of 300 Plank Screws 5 x 40 mm, 5 x 50 mm, 5 x 60 mm, 5 x 70 mm, Hardened Stainless Steel C1 Screws, Torx 25, Includes Stainless Steel Bit

Main Highlights
  • High-quality stainless steel: made of C1 stainless steel with good weather resistance and corrosion resistance. Equipped with a countersunk head and serrated, ground local threads, it is ideal for joining decking to wooden substructures. The internal star transmission ensures high power transmission and makes tightening safer and without wobbling. Self-tapping drill bits with cutouts allow precise positioning and easy screwing into wood
  • Various sizes: the VIGRUE 300-piece patio screw set contains different common sizes, 5 x 40 mm, 5 x 50 mm, 5 x 60 mm, 5 x 70 mm to meet different requirements, and is equipped with a Torx 25-bit
  • Widely used: with hardened stainless steel screws for wooden patios, decking, wooden cladding and wooden facades, you rely on the highest quality. These specially designed screws are ideal for woods such as Douglas fir, bangkirai, larch, robinia and pine. Ensure the stability and longevity of your project with these screws, whether it is when building a wooden patio or beautifying wooden facades
  • Easy to carry and store: All stainless steel screws for patios are carefully packaged in durable plastic boxes that offer different packaging lengths and styles. The packaging is neatly arranged, easy to open, search and transport to provide you with a convenient user experience for your project
  • Professional service: We offer customers 24-hour online customer service and are responsible for product quality. If there is a quality problem during use, please contact us. Our goal is to offer our customers the best products and services
Show More
8
4mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

4mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

Screws City
Why we love it
  • Perfect for large projects.
  • Rust-resistant stainless steel.
  • Durable high-quality construction.
Main Highlights
  • Size: 4mm x 40mm
  • Pack of 100
  • Stainless Steel
  • High Quality Decking Screws
Show More
9.5
Superb
9.5
Superb
Screws City

4mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

Why we love it
  • Perfect for large projects.
  • Rust-resistant stainless steel.
  • Durable high-quality construction.
Main Highlights
  • Size: 4mm x 40mm
  • Pack of 100
  • Stainless Steel
  • High Quality Decking Screws
Show More
9
100 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

100 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

Generic
Why we love it
  • Premium rust-proof stainless steel.
  • Compact and discrete design.
  • Generous pack of 100.
Main Highlights
  • 100 x Black 403 Grade Stainless Steel Small Head diameter T15 TORX Screws
  • These screws are know as trim head, meaning they are very compact in head diameter. 6mm
  • Totally rust proof, and discrete
  • Pack OF 100 - 4mm x 40mm length, 6mm diameter head
Show More
9.5
Superb
9.5
Superb
Generic

100 BLACK Stainless Steel Decking Screws 4mm x 40mm TORX T15 Small Trim Head

Why we love it
  • Premium rust-proof stainless steel.
  • Compact and discrete design.
  • Generous pack of 100.
Main Highlights
  • 100 x Black 403 Grade Stainless Steel Small Head diameter T15 TORX Screws
  • These screws are know as trim head, meaning they are very compact in head diameter. 6mm
  • Totally rust proof, and discrete
  • Pack OF 100 - 4mm x 40mm length, 6mm diameter head
Show More
10
4.5mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

4.5mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

Screws City
Why we love it
  • Durable stainless steel construction.
  • Perfect for decking projects.
  • Includes 100 high-quality screws.
Main Highlights
  • Size: 4.5mm x 40mm
  • Pack of 100
  • Stainless Steel
  • High Quality Decking Screws
Show More
9.3
Superb
9.3
Superb
Screws City

4.5mm x 40mm Stainless Steel Hard Wood Decking Screws Torx Countersunk Head and Self Drilling Tip High Corrosion Resistant Rust Proof Terrace Screws (Pack of 100) N14ABCD

Why we love it
  • Durable stainless steel construction.
  • Perfect for decking projects.
  • Includes 100 high-quality screws.
Main Highlights
  • Size: 4.5mm x 40mm
  • Pack of 100
  • Stainless Steel
  • High Quality Decking Screws
Show More