Structural, Lag & Construction Screws

Structural, lag and construction screws: structural wood screws, washer-head lag screws, timber screws and multi-material construction screws in hex, Torx and star drives, up to 10 in. long. Brands include SPAX (PowerLags, Multi-Material), FastenMaster (HeadLok, FlatLok, LogHog), GRK Fasteners, Grip-Rite and Simpson Strong-Tie.

Structural screws are used in place of lag bolts for ledgers, posts and timber work. For structural connections, follow the maker's spacing and load tables. Part of Screws.

FastenMaster TimberLOK No. 10 X 8 in. L Hex Epoxy Coarse Wood Screws 12 pk

FastenMaster TimberLOK No. 10 X 8 in. L Hex Epoxy Coarse Wood Screws 12 pk

Regular price $21.53 USD

Regular price Sale price $21.53 USD
Unit price per
MSRP $28.49
FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 250 pk

FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 250 pk

Regular price $164.08 USD

Regular price Sale price $164.08 USD
Unit price per
MSRP $222.99
FastenMaster LedgerLok No. 14 X 5 in. L Hex Epoxy Coarse Wood Screws 12 pk

FastenMaster LedgerLok No. 14 X 5 in. L Hex Epoxy Coarse Wood Screws 12 pk

Regular price $20.39 USD

Regular price Sale price $20.39 USD
Unit price per
MSRP $28.49
SPAX Multi-Material No. 8 Label X 2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 2 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 8 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster TimberLOK No. 10 X 4 in. L Hex Epoxy Coarse Wood Screws 50 pk

FastenMaster TimberLOK No. 10 X 4 in. L Hex Epoxy Coarse Wood Screws 50 pk

Regular price $41.48 USD

Regular price Sale price $41.48 USD
Unit price per
MSRP $51.49
SPAX Multi-Material No. 6 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster TimberLOK No. 10 X 4 in. L Hex Epoxy Coarse Wood Screws 12 pk

FastenMaster TimberLOK No. 10 X 4 in. L Hex Epoxy Coarse Wood Screws 12 pk

Regular price $17.08 USD

Regular price Sale price $17.08 USD
Unit price per
MSRP $23.99
SPAX Multi-Material No. 8 Label X 1-1/2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 1-1/2 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 6 Label X 1/2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 1/2 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 6 Label X 3/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 3/4 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 6 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 8 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster LedgerLok 3-5/8 in. L Hex Epoxy Coarse Wood Screws 12 pk

FastenMaster LedgerLok 3-5/8 in. L Hex Epoxy Coarse Wood Screws 12 pk

Regular price $20.07 USD

Regular price Sale price $20.07 USD
Unit price per
MSRP $25.99
SPAX Multi-Material No. 6 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 8 Label X 3/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 3/4 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 50 pk

FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 50 pk

Regular price $47.19 USD

Regular price Sale price $47.19 USD
Unit price per
MSRP $59.49
GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter 5/16, 50 pk

GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter 5/16, 50 pk

Regular price $1.68 USD

Regular price Sale price $1.68 USD
Unit price per
MSRP $2.03
$1.68 per pack · $84.00 per case of 50
SPAX Multi-Material No. 8 Label X 2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 2 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 6 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 5/8 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 8 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 6 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 6 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 8 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster TimberLok No. 10 X 2-1/2 in. L Galvanized Coarse Wood Screws 50 pk

FastenMaster TimberLok No. 10 X 2-1/2 in. L Galvanized Coarse Wood Screws 50 pk

Regular price $25.73 USD

Regular price Sale price $25.73 USD
Unit price per
MSRP $32.49
SPAX Multi-Material No. 8 Label X 1-1/2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 8 Label X 1-1/2 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
SPAX Multi-Material No. 10 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 Label X 1 in. L Unidrive Flat Head Serrated Construction Screws

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
GRK Fasteners 3/8 in. X 10 in. L Star Hex Head W-Cut Structural Screws (Sold Each, Box of 25)

GRK Fasteners 3/8 in. X 10 in. L Star Hex Head W-Cut Structural Screws (Sold Each, Box of 25)

Regular price $3.11 USD

Regular price Sale price $3.11 USD
Unit price per
MSRP $7.22
$3.11 per box · $77.75 per case of 25
GRK Fasteners 5/16 in. X 8 in. L Star Hex Head W-Cut Structural Screws

GRK Fasteners 5/16 in. X 8 in. L Star Hex Head W-Cut Structural Screws

Regular price $2.85 USD

Regular price Sale price $2.85 USD
Unit price per
MSRP $4.40
$2.85 each · $71.25 per pack of 25
GRK Fasteners 3/8 in. X 12 in. L Star Hex Head W-Cut Structural Screws 20 pk

GRK Fasteners 3/8 in. X 12 in. L Star Hex Head W-Cut Structural Screws 20 pk

Regular price $3.69 USD

Regular price Sale price $3.69 USD
Unit price per
MSRP $8.12
$3.69 per pack · $73.80 per case of 20
FastenMaster ThruLok No. 14 each X 7 in. L Hex Galvanized Coarse Wood Screws 1 pk

FastenMaster ThruLok No. 14 each X 7 in. L Hex Galvanized Coarse Wood Screws 1 pk

Regular price $89.93 USD

Regular price Sale price $89.93 USD
Unit price per
MSRP $100.99
GRK Fasteners 5/16 in. X 5-1/8 in. L Star Hex Head W-Cut Structural Screws 50 pk

Sold out

GRK Fasteners 5/16 in. X 5-1/8 in. L Star Hex Head W-Cut Structural Screws 50 pk

Regular price $65.43 USD

Regular price Sale price $65.43 USD
Unit price per
MSRP $78.48

Sold out
FastenMaster ThruLok No. 14 each X 6-1/4 in. L Hex Galvanized Coarse Wood Screws 1 pk

FastenMaster ThruLok No. 14 each X 6-1/4 in. L Hex Galvanized Coarse Wood Screws 1 pk

Regular price $81.13 USD

Regular price Sale price $81.13 USD
Unit price per
MSRP $93.49
FastenMaster FlatLOK Torx Ttap No. 40 X 2 in. L Driver Bit Steel 2 pc

FastenMaster FlatLOK Torx Ttap No. 40 X 2 in. L Driver Bit Steel 2 pc

Regular price $9.01 USD

Regular price Sale price $9.01 USD
Unit price per
MSRP $11.99
GRK Fasteners 5/16 in. X 3-1/8 in. L Star Hex Head W-Cut Structural Screws 100 pk

GRK Fasteners 5/16 in. X 3-1/8 in. L Star Hex Head W-Cut Structural Screws 100 pk

Regular price $76.43 USD

Regular price Sale price $76.43 USD
Unit price per
MSRP $92.61
$76.43 per pack · $152.86 per case of 2
Simpson Strong-Tie Strong-Drive No. 5 Sizes X 3 in. L Star Low Profile Head Bold Structural Screws

Simpson Strong-Tie Strong-Drive No. 5 Sizes X 3 in. L Star Low Profile Head Bold Structural Screws

Regular price $26.87 USD

Regular price Sale price $26.87 USD
Unit price per
Simpson Strong-Tie Strong-Drive No. 2 Sizes X 4 in. L Star Hex Washer Head Serrated Structural Screw

Simpson Strong-Tie Strong-Drive No. 2 Sizes X 4 in. L Star Hex Washer Head Serrated Structural Screw

Regular price $44.04 USD

Regular price Sale price $44.04 USD
Unit price per