Lag Bolts

Lag Bolts are externally threaded fasteners used to make strong, serviceable connections in metal, wood, and machinery. Buying from a stocked distributor means you can match the exact diameter, length, grade, and finish to the job instead of settling for what is on the shelf. South Coast Fasteners keeps Lag Bolts in stock and ready to ship, with fast 3-5 day shipping. Popular options include carbon steel lag bolts, stainless steel lag bolts, and galvanized lag bolts.

Product Name	Diameter 1	Thread Pitch	Length	Thread	Material	Finish
8.92300	1/4-10 x 1" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485106	1/4"	10	1"	Coarse	Low Carbon Steel	Plain	View Details
10.38500	1/4-10 x 1 1/8" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485109	1/4"	10	1 1/8"	Coarse	Low Carbon Steel	Plain	View Details
9.72300	1/4-10 x 1 1/4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485112	1/4"	10	1 1/4"	Coarse	Low Carbon Steel	Plain	View Details
5.66900	1/4-10 x 1 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485118	1/4"	10	1 1/2"	Coarse	Low Carbon Steel	Plain	View Details
0.00000	1/4-10 x 1 3/4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485124	1/4"	10	1 3/4"	Coarse	Low Carbon Steel	Plain	View Details
7.26150	1/4-10 x 2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485126	1/4"	10	2"	Coarse	Low Carbon Steel	Plain	View Details
16.18500	1/4-10 x 2 1/4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485130	1/4"	10	2 1/4"	Coarse	Low Carbon Steel	Plain	View Details
8.50000	1/4-10 x 2 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485136	1/4"	10	2 1/2"	Coarse	Low Carbon Steel	Plain	View Details
19.16900	1/4-10 x 2 3/4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485142	1/4"	10	2 3/4"	Coarse	Low Carbon Steel	Plain	View Details
10.16150	1/4-10 x 3" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485144	1/4"	10	3"	Coarse	Low Carbon Steel	Plain	View Details
11.82300	1/4-10 x 3 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485156	1/4"	10	3 1/2"	Coarse	Low Carbon Steel	Plain	View Details
15.56150	1/4-10 x 4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485164	1/4"	10	4"	Coarse	Low Carbon Steel	Plain	View Details
0.00000	1/4-10 x 4 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485167	1/4"	10	4 1/2"	Coarse	Low Carbon Steel	Plain	View Details
0.00000	1/4-10 x 5" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485170	1/4"	10	5"	Coarse	Low Carbon Steel	Plain	View Details
0.00000	1/4-10 x 5 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485173	1/4"	10	5 1/2"	Coarse	Low Carbon Steel	Plain	View Details
19.13100	1/4-10 x 6" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain	485176	1/4"	10	6"	Coarse	Low Carbon Steel	Plain	View Details
8.75000	1/4-10 x 1" Hex Head Lag Screws, Coarse, Low Carbon Steel, Zinc Cr+3	486106	1/4"	10	1"	Coarse	Low Carbon Steel	Zinc Cr+3	View Details
12.53880	1/4-10 x 1 1/8" Hex Head Lag Screws, Coarse, Low Carbon Steel, Zinc Cr+3	486109	1/4"	10	1 1/8"	Coarse	Low Carbon Steel	Zinc Cr+3	View Details
7.17250	1/4-10 x 1 1/4" Hex Head Lag Screws, Coarse, Low Carbon Steel, Zinc Cr+3	486112	1/4"	10	1 1/4"	Coarse	Low Carbon Steel	Zinc Cr+3	View Details
6.64600	1/4-10 x 1 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Zinc Cr+3	486118	1/4"	10	1 1/2"	Coarse	Low Carbon Steel	Zinc Cr+3	View Details

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Materials and Finishes

Lag Bolts come in grades matched to the load, from carbon steel through high-strength alloy and corrosion-resistant stainless, with finishes from plain and zinc through hot-dip galvanized for outdoor and washdown service. Pair them with lag screws, screws, and Grade 2 to round out the assembly.

How to Choose

Size it first with diameter, thread pitch, and length. From there, pick the grade that handles the load and a finish that matches where it will live, moving to alloy or stainless for high-stress or wet conditions.

Lag Bolts Industry Applications

Lag Bolts are specified across the trades. Cabinetry and automotive reach for them on heavy wood connections, while marine & offshore and petrochemical drive them into framing, ledgers, and timber. Plain, zinc, and hot-dip galvanized cover interior framing through wet, exterior, and ground-contact work.

Frequently Asked Questions

What is a lag bolt?

A lag bolt, also called a lag screw, is a heavy hex-head fastener with coarse, sharp threads and a gimlet point that drives directly into wood or into masonry anchors. It carries far more load than an ordinary wood screw.

What materials and finishes are lag bolts available in?

Lag Bolts come in grades matched to the load, from carbon steel through high-strength alloy and corrosion-resistant stainless, with finishes from plain and zinc through hot-dip galvanized for outdoor and washdown service. Common options include stainless steel lag bolts and galvanized lag bolts.

What are lag bolts used for?

Lag Bolts see daily use across cabinetry, automotive, marine and offshore, and petrochemical, from structural framing and heavy equipment to machinery and general repair.

Can I order in bulk or request a quote?

Yes. Stock covers small orders and full production runs. Reach out for a quote or product help.

Why Choose South Coast Fasteners?

We are a single source for fasteners, PPE, hand tools, cutting tools, abrasives, and industrial supplies, priced to compete and shipped fast by a crew that uses this gear every day. We also stock Grade 5, Finished Hex Nuts, and Flat Washers.