Construction Screws Built for Hard Work in Harsh Conditions

Big Timber exterior construction screws are built for demanding environments. From lags to decking screws, stock the rugged fasteners pros rely on — and round out your shelves with a complete line of interior screws and accessories.

Browse Bulk Exterior & Interior Construction Screws

CTX

Construction Lag Screw

Construction lag screw for log construction, timber frames, laminated beams, girders, ledger boards, stair rails, deck posts, and fencing
Round washer head and star drive support heavy wood fastening
3X bronze coating for exterior or interior use with pressure-treated lumber
Type 17 point helps start quickly in wood

BTX

Exterior Multi-purpose Wood Screw

Exterior multi-purpose wood screw for decking, framing, sub-floors, fencing, lattice, railings, stairs, and fine woodworking
Robertson drive with flat head and nibs for wood fastening applications
3X bronze coating for exterior or interior use with pressure-treated lumber
Type 17 point helps start quickly in wood

YTX

Interior Multi-purpose Wood Screw

Interior multi-purpose wood screw for wood fastening in construction, repair, and general installation work
Robertson drive with flat head and nibs supports stable bit engagement in wood applications
Gold zinc coating is intended for interior use
Type 17 point helps start quickly in wood

WTX

Wafer Head Lag Screw

Black wafer head lag screw for log construction, timber frames, laminated beams, girders, ledger boards, stair rails, deck posts, and fencing
Wafer head and star drive support structural wood fastening applications
3X black coating for exterior or interior use with pressure-treated lumber
Type 17 point helps start quickly in wood

STX

316 Stainless Steel Multi-purpose Wood Screw

316 stainless steel multi-purpose wood screw for coastal construction, salt spray exposure, laminated beams, girders, fencing, and decking
Robertson drive with flat head and nibs supports wood fastening applications
Stainless steel construction supports exterior or interior use in harsh environments
Type 17 point helps start quickly in wood

SFS

316 Stainless Steel Finish Wood Screw

316 stainless steel finish wood screw for coastal construction, salt spray exposure, wood framing, decking, rails, fencing, doors, and windows
Robertson drive with finish head supports clean fastening in wood applications
Stainless steel construction supports exterior or interior use in harsh environments
Type 17 point helps start quickly in wood

SCTX

316 Stainless Steel Construction Lag Screw

316 stainless steel construction lag screw for coastal construction, salt spray exposure, laminated beams, girders, ledger boards, deck posts, and fencing
Round washer head and star drive support heavy wood fastening
Stainless steel construction supports use in harsh exterior environments
Type 17 point helps start quickly in wood

FSRT

Finish Screw With Reverse Thread

Finish screw with reverse thread for cabinetry, finish and trim, door installation, remodelling, and composite-compatible applications
Bronze coating with white head supports finished trim work
Reverse thread helps reduce surface disturbance in compatible materials
Star drive and Type 17 point support controlled installation

RWH

Round Washer Head Wood Screw

Round washer head wood screw for garage door weather trim, weather seal, door sweeps, screen moulding, soffit, fascia, and light-duty construction
Broad washer head helps provide bearing surface for trim and light construction applications
Star drive with Type 17 point supports practical installation in wood
3X bronze coating and V-notches support exterior or interior use with pressure-treated lumber

FHD

Wood to Steel Self-Drilling Screw

Wood-to-steel self-drilling screw for truck beds, trailers, docks, and wall liners
Flat head and star drive support fastening wood to metal
Self-drilling point with wings helps prepare wood before engaging steel
3X bronze coating for exterior or interior use with pressure-treated lumber

FS

Finish Wood Screw

Finish wood screw for cabinetry, finish and trim, door installation, remodelling, and interior or exterior construction
Small finish head helps create a cleaner installed appearance
Star drive with Type 17 point supports controlled installation in wood
3X bronze coating and aggressive knurl support practical finish fastening

CD

Composite Deck Screw

Composite deck screw for composite deck boards, fascia, railing, trim boards, and wood siding
Colour-matched options support a cleaner finished deck surface
Flat undercut head with dual thread design for composite and trim applications
Star drive and Type 17 point support practical jobsite installation

CON

Concrete / Masonry Screw

Concrete and masonry screw for fastening into concrete, brick, block, and similar substrates
Drillcrete concrete screw assortment includes hex washer head and flat head options
3X silver and 3X blue finish options support common concrete fastening needs
Diamond point and corrosion resistant coating support interior or exterior use

BL

Black Log Timber Lag Screw

Black log timber lag screw for log construction, timber frames, laminated beams, ledger boards, and landscape timbers
Hex washer head with hex drive for heavy wood fastening
3X black coating for exterior or interior use with pressure-treated lumber
Type 17 point helps start quickly in wood

Mountain Tested Durability for Every Connection

Big Timber exterior screws are built to handle demanding conditions. Rugged coatings, reliable drive systems, and quality‑controlled production give retailers confidence in a line that performs for pros and keeps returns low.

Color-Coded so Pros Can Grab the Right Box Fast

When contractors are moving quickly, they need packaging that keeps up. Big Timber’s color‑coded labels make it easy for pros to spot the right screw at a glance, helping them get back to work and helping your shelves move product.

Reliability Measured by Results

Stock a fastener line that performs for pros and makes your job easier — dependable supply, packaging that sells, and construction screws built to meet real‑world demands.

Reliable Supply

98% on-time fulfillment.

Retail-Ready Packaging

Efficient to stock, easy to merchandise, and designed to move.

Engineered for Performance

Rugged, corrosion-resistant, mountain-tested construction screws

Partner Support

POS displays, seasonal programs, and easy onboarding.

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