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.

Hampton 3/8 in. X 5 in. L Zinc-Plated Steel Lag Thread Eyebolt Nut Included

Hampton 3/8 in. X 5 in. L Zinc-Plated Steel Lag Thread Eyebolt Nut Included

Regular price $1.09 USD

Regular price Sale price $1.09 USD
Unit price per

$1.09 each · $10.90 per pack of 10
Hampton 2-5/8 in. X 4 in. L Zinc-Plated Steel Lag Thread Eyebolt

Hampton 2-5/8 in. X 4 in. L Zinc-Plated Steel Lag Thread Eyebolt

Regular price $0.69 USD

Regular price Sale price $0.69 USD
Unit price per

$0.69 each · $6.90 per pack of 10
Hillman Power Pro 5/16 in. X 6 in. L Star Steel Lag Screw 1 pk

Hillman Power Pro 5/16 in. X 6 in. L Star Steel Lag Screw 1 pk

Regular price $1.65 USD

Regular price Sale price $1.65 USD
Unit price per
MSRP $2.29
$1.65 per pack · $66.00 per case of 40
Hampton 3/8 in. X 4-1/2 in. L Zinc-Plated Steel Lag Thread Eyebolt

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Hampton 3/8 in. X 4-1/2 in. L Zinc-Plated Steel Lag Thread Eyebolt

Regular price $1.00 USD

Regular price Sale price $1.00 USD
Unit price per

$1.00 each · $10.00 per pack of 10

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GRK Fasteners No. 10 in. X 2-1/2 in. L Star Hex Head W-Cut Structural Screws

GRK Fasteners No. 10 in. X 2-1/2 in. L Star Hex Head W-Cut Structural Screws

Regular price $17.65 USD

Regular price Sale price $17.65 USD
Unit price per
MSRP $21.25
GRK Fasteners 5/16 in. X 3-1/8 in. L Star Hex Head W-Cut Structural Screws 25 pk

GRK Fasteners 5/16 in. X 3-1/8 in. L Star Hex Head W-Cut Structural Screws 25 pk

Regular price $23.05 USD

Regular price Sale price $23.05 USD
Unit price per
MSRP $27.79
GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter .3125, 100 pk

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GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter .3125, 100 pk

Regular price $71.93 USD

Regular price Sale price $71.93 USD
Unit price per
MSRP $87.28
$71.93 per pack · $143.86 per case of 2

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GRK Fasteners 5/16 in. X 6 in. L Star Hex Head W-Cut Structural Screws — Diameter 5/16

GRK Fasteners 5/16 in. X 6 in. L Star Hex Head W-Cut Structural Screws — Diameter 5/16

Regular price $2.76 USD

Regular price Sale price $2.76 USD
Unit price per
MSRP $3.33
$2.76 each · $110.40 per pack of 40
Simpson Strong-Tie Strong-Drive No. 5 Sizes X 5 in. L Star Low Profile Head Bold Structural Screws — Model SDWS22500DB-R50

Simpson Strong-Tie Strong-Drive No. 5 Sizes X 5 in. L Star Low Profile Head Bold Structural Screws — Model SDWS22500DB-R50

Regular price $38.69 USD

Regular price Sale price $38.69 USD
Unit price per
GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter .3125, 25 pk

GRK Fasteners 5/16 in. X 4 in. L Star Hex Head W-Cut Structural Screws — Diameter .3125, 25 pk

Regular price $22.80 USD

Regular price Sale price $22.80 USD
Unit price per
MSRP $27.50
SPAX PowerLags 5/16 in. X 5 in. L Washer High Corrosion Resistant Carbon Steel Lag Screw 1 pk

SPAX PowerLags 5/16 in. X 5 in. L Washer High Corrosion Resistant Carbon Steel Lag Screw 1 pk

Regular price $1.80 USD

Regular price Sale price $1.80 USD
Unit price per
MSRP $2.49
$1.80 per pack · $45.00 per case of 25
Simpson Strong-Tie Strong-Drive No. 9 Sizes X 6 in. L Star Truss Head Standard Structural Screws

Simpson Strong-Tie Strong-Drive No. 9 Sizes X 6 in. L Star Truss Head Standard Structural Screws

Regular price $45.89 USD

Regular price Sale price $45.89 USD
Unit price per
Grip-Rite No. 9 wire X 2-1/2 in. L Star Flat Head Coarse Construction Screws — 85 pk

Grip-Rite No. 9 wire X 2-1/2 in. L Star Flat Head Coarse Construction Screws — 85 pk

Regular price $4.53 USD

Regular price Sale price $4.53 USD
Unit price per
MSRP $8.99
SPAX PowerLag 5/16 in. X 6 in. L T-40 Washer Head Serrated Structural Screws

SPAX PowerLag 5/16 in. X 6 in. L T-40 Washer Head Serrated Structural Screws

Regular price $20.24 USD

Regular price Sale price $20.24 USD
Unit price per
MSRP $26.89
SPAX PowerLags 1/4 in. X 6 in. L Washer High Corrosion Resistant Carbon Steel Lag Screw 1 pk

SPAX PowerLags 1/4 in. X 6 in. L Washer High Corrosion Resistant Carbon Steel Lag Screw 1 pk

Regular price $2.12 USD

Regular price Sale price $2.12 USD
Unit price per
MSRP $2.39
$2.12 per pack · $106.00 per case of 50
FastenMaster Headlok 4.5 in. L Torx Ttap T30 Coarse Structural Wood Screws 50 pk

FastenMaster Headlok 4.5 in. L Torx Ttap T30 Coarse Structural Wood Screws 50 pk

Regular price $42.24 USD

Regular price Sale price $42.24 USD
Unit price per
MSRP $52.99
SPAX Multi-Material No. 9 Label X 3 1/4 in. L T-20+ Flat Head Serrated Construction Screws

SPAX Multi-Material No. 9 Label X 3 1/4 in. L T-20+ Flat Head Serrated Construction Screws

Regular price $15.87 USD

Regular price Sale price $15.87 USD
Unit price per
MSRP $19.09
SPAX Multi-Material No. 8 in. X 2-1/2 in. L Phillips/Square Flat Head Serrated Construction Screws

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

Regular price $3.52 USD

Regular price Sale price $3.52 USD
Unit price per
MSRP $4.79
FastenMaster Headlok 6 in. L Torx Ttap T30 Coarse Structural Wood Screws 12 pk

FastenMaster Headlok 6 in. L Torx Ttap T30 Coarse Structural Wood Screws 12 pk

Regular price $20.63 USD

Regular price Sale price $20.63 USD
Unit price per
MSRP $24.99
SPAX Multi-Material No. 10 Label X 3-1/2 in. L T-20+ Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 Label X 3-1/2 in. L T-20+ Flat Head Serrated Construction Screws

Regular price $15.87 USD

Regular price Sale price $15.87 USD
Unit price per
MSRP $19.09
SPAX PowerLag 5/16 in. X 4 in. L T-40 Washer Head Serrated Structural Screws

SPAX PowerLag 5/16 in. X 4 in. L T-40 Washer Head Serrated Structural Screws

Regular price $13.32 USD

Regular price Sale price $13.32 USD
Unit price per
MSRP $21.09
SPAX PowerLag 1/4 in. X 2-1/2 in. L T-30 Washer Head Serrated Structural Screws

SPAX PowerLag 1/4 in. X 2-1/2 in. L T-30 Washer Head Serrated Structural Screws

Regular price $12.04 USD

Regular price Sale price $12.04 USD
Unit price per
MSRP $16.39
SPAX PowerLags 1/4 in. X 4 in. L T-30 Washer Head Serrated Structural Screws

SPAX PowerLags 1/4 in. X 4 in. L T-30 Washer Head Serrated Structural Screws

Regular price $27.76 USD

Regular price Sale price $27.76 USD
Unit price per
MSRP $39.69
SPAX Multi-Material No. 10 in. X 2-1/2 in. L T-20+ Wafer Head Serrated Construction Screws

SPAX Multi-Material No. 10 in. X 2-1/2 in. L T-20+ Wafer Head Serrated Construction Screws

Regular price $15.87 USD

Regular price Sale price $15.87 USD
Unit price per
Grip-Rite No. 8 in. X 2 in. L Star Flat Head Coarse Construction Screws

Grip-Rite No. 8 in. X 2 in. L Star Flat Head Coarse Construction Screws

Regular price $5.88 USD

Regular price Sale price $5.88 USD
Unit price per
MSRP $8.99
$5.88 each · $70.56 per pack of 12
Grip-Rite No. 9 in. X 3 in. L Star Flat Head Coarse Construction Screws — 72 pk

Grip-Rite No. 9 in. X 3 in. L Star Flat Head Coarse Construction Screws — 72 pk

Regular price $5.92 USD

Regular price Sale price $5.92 USD
Unit price per
MSRP $8.99
SPAX PowerLag 1/4 in. X 4 in. L T-30 Washer Head Serrated Structural Screws

SPAX PowerLag 1/4 in. X 4 in. L T-30 Washer Head Serrated Structural Screws

Regular price $12.75 USD

Regular price Sale price $12.75 USD
Unit price per
MSRP $19.79
SPAX PowerLag 5/16 in. X 5 in. L T-30 Washer Head Serrated Structural Screws

SPAX PowerLag 5/16 in. X 5 in. L T-30 Washer Head Serrated Structural Screws

Regular price $18.11 USD

Regular price Sale price $18.11 USD
Unit price per
MSRP $24.49
SPAX Multi-Material No. 10 Label X 2-1/2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 Label X 2-1/2 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
FastenMaster HeadLok 4-1/2 in. L Torx Ttap Coarse Structural Wood Screws — Model FMHLGMTT412-12

FastenMaster HeadLok 4-1/2 in. L Torx Ttap Coarse Structural Wood Screws — Model FMHLGMTT412-12

Regular price $17.67 USD

Regular price Sale price $17.67 USD
Unit price per
MSRP $23.49
SPAX Multi-Material No. 10 Label X 1-1/4 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 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. 10 Label X 1-1/2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 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
GRK Fasteners 5/16 in. X 6 in. L Star Hex Head W-Cut Structural Screws

GRK Fasteners 5/16 in. X 6 in. L Star Hex Head W-Cut Structural Screws

Regular price $80.96 USD

Regular price Sale price $80.96 USD
Unit price per
MSRP $97.14
FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 12 pk

FastenMaster TimberLOK No. 10 X 6 in. L Hex Epoxy Coarse Wood Screws 12 pk

Regular price $18.57 USD

Regular price Sale price $18.57 USD
Unit price per
MSRP $25.99
SPAX Multi-Material No. 10 Label X 2 in. L Unidrive Flat Head Serrated Construction Screws

SPAX Multi-Material No. 10 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
FastenMaster TimberLOK No. 10 X 10 in. L Hex Epoxy Coarse Wood Screws

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

Regular price $24.52 USD

Regular price Sale price $24.52 USD
Unit price per
MSRP $30.99