Deck Screws — ACQ Compatible Exterior Wood Screws | Fasto
Deck screws, also referred to as decking screws, exterior wood screws, or composite deck screws, are heavy-duty fasteners purpose-built for outdoor deck construction and pressure-treated lumber applications. Manufactured to ASME B18.6.1 with an ACQ-compatible ceramic coating, Fasto deck screws deliver 1,500+ hours of salt spray resistance per ASTM B117. The Type 17 slash point eliminates the need for pre-drilling, while the deep coarse thread ensures superior pull-out resistance in both softwood and engineered composite decking such as Trex and TimberTech. Contact us to get latest price.
Deck Screws Detail:
|
Attribute |
Detail |
|
Product Name |
Deck Screws |
|
Common Aliases |
Decking Screws, Exterior Wood Screws, Composite Deck Screws, ACQ Screws |
|
Material |
410 Stainless Steel / Carbon Steel (Case-Hardened) |
|
Coating |
ACQ-Approved Ceramic Coating (Grey / Tan / Brown Color-Matched) |
|
Drive Type |
T25 Star (Torx) / #2 Square (Robertson) |
|
Head Style |
Bugle Head with Under-Head Nibs (Self-Countersinking) |
|
Thread Type |
Deep Coarse Thread (Type A, Single Start) |
|
Point Type |
Type 17 Slash Point (Self-Drilling) |
|
Gauge (Diameter) |
#8 (0.164" / 4.2 mm), #10 (0.190" / 4.8 mm), #12 (0.216" / 5.5 mm) |
|
Length |
1-1/4", 1-5/8", 2", 2-1/2", 3", 3-1/2" |
|
Head Diameter |
#8: 0.322" |
|
Thread Coverage |
Full Thread (60% – 75% of shank length) |
|
Applicable Standards |
ASME B18.6.1, ASTM B117, ISO 10666 |
|
Corrosion Resistance Rating |
C4 (EN ISO 12944) |
|
Salt Spray Performance |
1,500+ Hours (Red Rust) per ASTM B117 |
|
Packaging |
1 lb / 5 lb / 25 lb Bulk Box; Custom Retail Blister Pack Available |
|
Color Options |
Grey, Tan, Brown (PVC-Coated Head for Composite Decking Color Match) |
Deck screws size:
|
Gauge |
Major Dia (d) |
Head Dia (dk) |
Common Lengths (L) |
Drive |
|
#8 |
0.164" / 4.2 mm |
0.322" |
1-5/8", 2", 2-1/2" |
T25 |
|
#10 |
0.190" / 4.8 mm |
0.362" |
2", 2-1/2", 3" |
T25 |
|
#12 |
0.216" / 5.5 mm |
0.402" |
2-1/2", 3", 3-1/2" |
T25 |
All dimensions comply with ASME B18.6.1.
Deck screws Applications:
Pressure-Treated Lumber Decking;ACQ-Compatible Coating
Composite & PVC Decking (Trex, TimberTech);Reverse Thread Option for No Mushrooming
Outdoor Structures:Fences, Pergolas & Boardwalks;C4 Corrosion Resistance Class
Quality Control:
|
Step |
Content |
|
① Incoming Raw Material |
Chemical composition analysis via spectrometer (C, Cr, Ni content verification) |
|
② In-Process Inspection |
Thread geometry check every 2 hours (optical comparator, ±0.02 mm) |
|
③ Salt Spray Test |
ASTM B117 — minimum 1,500-hour red rust resistance per batch |
|
④ Final Audit (AQL 1.0) |
Dimensional sampling, drive torque test, coating adhesion cross-hatch test |
Why choose Fasto?
Decades of Fastener Engineering, Delivered with Precision.
With over 20 years of fastener manufacturing heritage, Fasto operates a fully integrated production ecosystem — from in-house cold heading and thread rolling to automated sorting and packaging. Our deck screws are manufactured on IATF 16949 certified production lines under rigorous statistical process control (SPC), delivering lot-to-lot consistency that professional deck builders and lumber yards across North America rely on. Every batch is traceable to its raw material heat number, and our in-house laboratory runs ASTM B117 salt spray testing as a standard QC gate — not an optional extra. This is not a commodity screw; it is an engineered component designed to outlast the structure it holds together.
Built for the Real Demands of North American Decks.
North American decks face freeze-thaw cycling, UV exposure, and the aggressive chemistry of ACQ and CA pressure-treated lumber. Fasto deck screws are purpose-formulated for this environment: our ceramic coating system delivers 1,500+ hours of salt spray resistance (ASTM B117), our Type 17 slash point eliminates pre-drilling labor, and our T25 Torx drive virtually eliminates stripped heads on the job site. Color-matched coatings in grey, tan, and brown blend seamlessly with leading composite brands including Trex and TimberTech. Whether you are a pro deck builder specifying fasteners for a 2,000 sq ft project or a distributor stocking shelf-ready blister packs, Fasto delivers the same engineering-grade quality, backed by IATF 16949, ISO 9001, CE, and SGS certifications.
Faq:
Q1: Are Fasto deck screws compatible with pressure-treated lumber?
Yes. All Fasto deck screws feature an ACQ-compatible ceramic coating that has been independently tested to withstand the copper-based preservatives used in modern pressure-treated lumber (ACQ, CA-B, and MCQ). Our coating system achieves 1,500+ hours of salt spray resistance per ASTM B117, exceeding the 1,000-hour industry benchmark.
Q2: What is the difference between #8 and #10 gauge deck screws?
#8 gauge (0.164" diameter) is typically used for standard 5/4 deck boards (actual thickness ~1") and lighter-duty applications. #10 gauge (0.190" diameter) is the go-to choice for 2× lumber, hardwood decking, and high-traffic commercial decks where higher shear strength is required. #10 offers approximately 25% greater tensile strength than #8. We recommend #10 × 3" for 2×6 deck boards and #10 × 2-1/2" for 5/4 boards as the default specification.
Q3: Do I need to pre-drill before installing Fasto deck screws?
No. The Type 17 slash point is specifically engineered to cut its own pilot hole, eliminating pre-drilling in most softwoods and pressure-treated lumber. For hardwood species (ipe, cumaru, mahogany) or when fastening within 1" of board ends, we recommend a shallow pilot hole to eliminate any risk of splitting.
Q4: Can Fasto deck screws be used with composite decking (Trex, TimberTech)?
Absolutely. We offer composite-specific variants with a reverse thread near the head that prevents the "mushrooming" effect common on capped composite boards. Color-matched head coatings are available in grey, tan, and brown to blend with major composite decking brands. Specify "Composite Deck Screws" when ordering.
Q5: What is the minimum order quantity (MOQ) and packaging format?
Standard packaging includes 1 lb, 5 lb, and 25 lb bulk boxes. MOQ is 1,000 lbs per size/coating combination. Custom retail blister packs, private-label boxes, and PDQ display trays are available for distribution partners. Lead time: 15–25 days for standard configurations; custom packaging add 7–10 days. Contact our sales team for a quote tailored to your volume.