Lag Screws

Lag screws are your go-to for pulling wood tight and keeping it there in structural repairs, decking and framing. Grab Power-Thread star drive when you want no pre-drill speed, flush or dome heads and underhead serrations to fight loosening. For standard installs, choose carbon steel, hot-dip galvanized for outdoor corrosion or 18-8 stainless in wet areas.

139 results

Hex Head Lag Screws

Star Drive Power-Thread+ Universal Lag Screws

Star Drive Power-Thread High Performance Lag Screws

Galvanized Hex Head Lag Screws

18-8 Stainless Steel Hex Head Lag Screws - Fine Thread (SAE)

Hex Head Lag Screws

Hex head lag screws made from carbon steel with zinc plating and sharp gimlet points. Coarse lag threads and hex heads provide secure, high‑pullout holding for wood and heavy timber, while zinc finish helps resist corrosion for general construction and structural fastening.

Diameter: 1/4"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1"	50	436408	Log in to view price
1/4" x 1" Hex Head Lag Screw - 50 Pack Item #: 436408 Package Weight: 0.8 lbs View Product Details Log in to Order
1-1/4"	50	436410	Log in to view price
1/4" x 1-1/4" Hex Head Lag Screw - 50 Pack Item #: 436410 Package Weight: 0.8 lbs View Product Details Log in to Order
1-1/2"	50	436412	Log in to view price
1/4" x 1-1/2" Hex Head Lag Screw - 50 Pack Item #: 436412 Package Weight: 1 lbs View Product Details Log in to Order
2"	50	436416	Log in to view price
1/4" x 2" Hex Head Lag Screw - 50 Pack Item #: 436416 Package Weight: 1.2 lbs View Product Details Log in to Order
2-1/2"	50	436420	Log in to view price
1/4 x 2-1/2 Hex Head Lag Screw - 50 Pack Item #: 436420 Package Weight: 1.5 lbs View Product Details Log in to Order
3"	50	436424	Log in to view price
1/4" x 3" Hex Head Lag Screw - 50 Pack Item #: 436424 Package Weight: 1.8 lbs View Product Details Log in to Order
3-1/2"	50	436428	Log in to view price
1/4" x 3-1/2" Hex Head Lag Screw - 50 Pack Item #: 436428 Package Weight: 2 lbs View Product Details Log in to Order
4"	50	436432	Log in to view price
1/4" x 4" Hex Head Lag Screw - 50 Pack Item #: 436432 Package Weight: 2.3 lbs View Product Details Log in to Order
5"	25	436440	Log in to view price
1/4" x 5" Hex Head Lag Screw - 25 Pack Item #: 436440 Package Weight: 1.5 lbs View Product Details Log in to Order
6"	25	436448	Log in to view price
1/4" x 6" Hex Head Lag Screw - 25 Pack Item #: 436448 Package Weight: 1.7 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1"	50	436508	Log in to view price
5/16" x 1" Hex Head Lag Screw - 50 Pack Item #: 436508 Package Weight: 1.2 lbs View Product Details Log in to Order
1-1/2"	50	436512	Log in to view price
5/16" x 1-1/2" Hex Head Lag Screw - 50 Pack Item #: 436512 Package Weight: 1.6 lbs View Product Details Log in to Order

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Star Drive Power-Thread+ Universal Lag Screws

Star Drive Power-Thread+ lag screws made from case-hardened steel with corrosion-resistant finish, flat head and corkscrew tip. Serrated under-head and Power-Thread star recess provide secure, flush installs; ideal for structural and ACQ-treated wood. Note: Torx® is a Registered Trademark of Acument Intellectual Properties.

Diameter: #6

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1-1/2"	100	438830	Log in to view price
#6 x 1-1/2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438830 Package Weight: 0.4 lbs View Product Details Log in to Order

Diameter: #8

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1-1/4"	100	438831	Log in to view price
#8 x 1-1/4" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438831 Package Weight: 0.4 lbs View Product Details Log in to Order
1-1/2"	100	438832	Log in to view price
#8 x 1-1/2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438832 Package Weight: 0.5 lbs View Product Details Log in to Order
2"	100	438833	Log in to view price
#8 x 2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438833 Package Weight: 0.6 lbs View Product Details Log in to Order

Diameter: #9

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1-1/2"	100	438834	Log in to view price
#9 x 1-1/2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438834 Package Weight: 0.6 lbs View Product Details Log in to Order
1-3/4"	100	438835	Log in to view price
#9 x 1-3/4" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438835 Package Weight: 0.7 lbs View Product Details Log in to Order
2"	100	438836	Log in to view price
#9 x 2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438836 Package Weight: 0.8 lbs View Product Details Log in to Order
2-1/2"	100	438837	Log in to view price
#9 x 2-1/2" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438837 Package Weight: 1 lbs View Product Details Log in to Order
2-3/4"	100	438838	Log in to view price
#9 x 2-3/4" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438838 Package Weight: 1.1 lbs View Product Details Log in to Order
3-1/8"	100	438839	Log in to view price
#9 x 3-1/8" Star Drive Power-Thread+ Lag Screw - 100 Pack Item #: 438839 Package Weight: 1.2 lbs View Product Details Log in to Order

Diameter: #10

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
2-1/2"	50	438840	Log in to view price
#10 x 2-1/2" Star Drive Power-Thread+ Lag Screw - 50 Pack Item #: 438840 Package Weight: 0.7 lbs View Product Details Log in to Order
2-3/4"	50	438841	Log in to view price
#10 x 2-3/4" Star Drive Power-Thread+ Lag Screw - 50 Pack Item #: 438841 Package Weight: 0.7 lbs View Product Details Log in to Order

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Star Drive Power-Thread High Performance Lag Screws

Power-Thread high-performance lag screws with star drive recesses made from case-hardened steel with corrosion-resistant coating. Dome head with serrated underhead and corkscrew tip provides countersink and no pre-drilling for faster installation.

Diameter: #10

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1-1/2"	50	437747	Log in to view price
#10 x 1-1/2" Power-Thread Lag Screw - 50 Pack Item #: 437747 Package Weight: 0.5 lbs View Product Details Log in to Order
2"	50	437748	Log in to view price
#10 x 2" Power-Thread Lag Screw - 50 Pack Item #: 437748 Package Weight: 0.6 lbs View Product Details Log in to Order
2-3/4"	50	437749	Log in to view price
#10 x 2-3/4" Power-Thread Lag Screw - 50 Pack Item #: 437749 Package Weight: 0.8 lbs View Product Details Log in to Order
3-1/8"	50	437750	Log in to view price
#10 x 3-1/8" Power-Thread Lag Screw - 50 Pack Item #: 437750 Package Weight: 22.4 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
2-1/2"	25	437751	Log in to view price
5/16" x 2-1/2" Power-Thread Lag Screw - 25 Pack Item #: 437751 Package Weight: 0.8 lbs View Product Details Log in to Order
3-1/8"	25	437752	Log in to view price
5/16" x 3-1/8" Power-Thread Lag Screw - 25 Pack Item #: 437752 Package Weight: 0.9 lbs View Product Details Log in to Order
4"	25	437753	Log in to view price
5/16" x 4" Power-Thread Lag Screw - 25 Pack Item #: 437753 Package Weight: 1.1 lbs View Product Details Log in to Order
5"	25	437754	Log in to view price
5/16" x 5" Power-Thread Lag Screw - 25 Pack Item #: 437754 Package Weight: 1.3 lbs View Product Details Log in to Order
6"	25	437755	Log in to view price
5/16" x 6" Power-Thread Lag Screw - 25 Pack Item #: 437755 Package Weight: 1.6 lbs View Product Details Log in to Order

Diameter: 3/8"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
4"	25	437756	Log in to view price
3/8" x 4" Power-Thread Lag Screw - 25 Pack Item #: 437756 Package Weight: 1.4 lbs View Product Details Log in to Order
6"	25	437757	Log in to view price
3/8" x 6" Power-Thread Lag Screw - 25 Pack Item #: 437757 Package Weight: 2.1 lbs View Product Details Log in to Order
7"	10	437758	Log in to view price
3/8" x 7" Power-Thread Lag Screw - 10 Pack Item #: 437758 Package Weight: 1 lbs View Product Details Log in to Order

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Galvanized Hex Head Lag Screws

Hex head lag screws made from carbon steel with hot-dip galvanized finish and sharp gimlet point. Hex head drive provides strong wrench engagement and coarse threads for wood and structural fastening. Corrosion-resistant coating helps extend service life.

Diameter: 1/4"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1"	50	4316408	Log in to view price
1/4" x 1" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316408 Package Weight: 0.8 lbs View Product Details Log in to Order
1-1/2"	50	4316412	Log in to view price
1/4" x 1-1/2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316412 Package Weight: 1 lbs View Product Details Log in to Order
2"	50	4316416	Log in to view price
1/4" x 2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316416 Package Weight: 1.4 lbs View Product Details Log in to Order
2-1/2"	50	4316420	Log in to view price
1/4" x 2-1/2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316420 Package Weight: 1.7 lbs View Product Details Log in to Order
3"	50	4316424	Log in to view price
1/4" x 3" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316424 Package Weight: 1.8 lbs View Product Details Log in to Order
3-1/2"	50	4316428	Log in to view price
1/4" x 3-1/2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316428 Package Weight: 2.2 lbs View Product Details Log in to Order
4"	50	4316432	Log in to view price
1/4" x 4" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316432 Package Weight: 2.4 lbs View Product Details Log in to Order
5"	25	4316440	Log in to view price
1/4" x 5" Galvanized Hex Head Lag Screw - 25 Pack Item #: 4316440 Package Weight: 1.6 lbs View Product Details Log in to Order
6"	25	4316448	Log in to view price
1/4" x 6" Galvanized Hex Head Lag Screw - 25 Pack Item #: 4316448 Package Weight: 1.9 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1"	50	4316508	Log in to view price
5/16" x 1" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316508 Package Weight: 1.3 lbs View Product Details Log in to Order
1-1/2"	50	4316512	Log in to view price
5/16" x 1-1/2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316512 Package Weight: 1.7 lbs View Product Details Log in to Order
2"	50	4316516	Log in to view price
5/16" x 2" Galvanized Hex Head Lag Screw - 50 Pack Item #: 4316516 Package Weight: 1.9 lbs View Product Details Log in to Order

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18-8 Stainless Steel Hex Head Lag Screws - Fine Thread (SAE)

A selection of 18-8 stainless steel hex head lag screws with gimlet tips and fine SAE threads. Hex head design provides strong wrench engagement and the stainless construction resists corrosion for outdoor or structural fastening. Suitable for wood and heavy timber applications.

Diameter: 1/4"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1"	25	3310408	Log in to view price
1/4" x 1" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310408 Package Weight: 0.4 lbs View Product Details Log in to Order
1-1/4"	25	3310410	Log in to view price
1/4" x 1-1/4" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310410 Package Weight: 0.5 lbs View Product Details Log in to Order
1-1/2"	25	3310412	Log in to view price
1/4" x 1-1/2" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310412 Package Weight: 0.6 lbs View Product Details Log in to Order
2"	25	3310416	Log in to view price
1/4" x 2" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310416 Package Weight: 0.7 lbs View Product Details Log in to Order
2-1/2"	25	3310420	Log in to view price
1/4" x 2-1/2" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310420 Package Weight: 0.8 lbs View Product Details Log in to Order
3"	25	3310424	Log in to view price
1/4" x 3" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310424 Package Weight: 1 lbs View Product Details Log in to Order
3-1/2"	25	3310428	Log in to view price
1/4" x 3-1/2" 18-8 Stainless Steel Hex Head Lag Screw - 25 Pack Item #: 3310428 Package Weight: 1.1 lbs View Product Details Log in to Order
4"	25	3310432	Log in to view price
1/4" x 4" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310432 Package Weight: 1.3 lbs View Product Details Log in to Order
5"	25	3310440	Log in to view price
1/4" x 5" 18-8 Stainless Steel Hex Head Lag Screw - 25 Pack Item #: 3310440 Package Weight: 1.5 lbs View Product Details Log in to Order

Diameter: 5/16"

Length	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1-1/2"	25	3310512	Log in to view price
5/16" x 1-1/2" 18-8 Stainless Steel Hex Head Lag Screw - 25 Pack Item #: 3310512 Package Weight: 0.8 lbs View Product Details Log in to Order
2"	25	3310516	Log in to view price
5/16" x 2" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310516 Package Weight: 1.1 lbs View Product Details Log in to Order
2-1/2"	25	3310520	Log in to view price
5/16" x 2-1/2" 18-8 Stainless Steel (SAE) Hex Head Lag Screw - 25 Pack Item #: 3310520 Package Weight: 1.2 lbs View Product Details Log in to Order