Square Head Bolts

Square Head Bolts provide reliable, removable fastening across structural, industrial, and general assembly work. Ordering from a distributor that carries deep stock means matching the exact size, grade, and finish to the job, not making do with the closest thing on the rack. South Coast Fasteners stocks Square Head Bolts in a full range of sizes, grades, and finishes, with fast 3-5 day shipping.

Product Name	Diameter 1	Thread Pitch	Length	Thread	Material	Finish
0.00000	1/4-20 x 3/4" (FT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730006	1/4"	20	3/4" (FT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 1" (FT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730008	1/4"	20	1" (FT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 1 1/4" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730010	1/4"	20	1 1/4" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 1 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730012	1/4"	20	1 1/2" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730015	1/4"	20	2" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 2 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730017	1/4"	20	2 1/2" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 3" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730019	1/4"	20	3" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 3 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730021	1/4"	20	3 1/2" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 4" (PT) Square Head Bolts, Coarse, A-307 Grade A, Zinc Cr+3	730023	1/4"	20	4" (PT)	Coarse	A-307 Grade A	Zinc Cr+3	View Details
0.00000	1/4-20 x 3/4" (FT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747006	1/4"	20	3/4" (FT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 1" (FT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747008	1/4"	20	1" (FT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 1 1/4" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747010	1/4"	20	1 1/4" (PT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 1 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747012	1/4"	20	1 1/2" (PT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747015	1/4"	20	2" (PT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 2 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747017	1/4"	20	2 1/2" (PT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 3" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747019	1/4"	20	3" (PT)	Coarse	A-307 Grade A	Plain	View Details
33.46200	1/4-20 x 3 1/2" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747021	1/4"	20	3 1/2" (PT)	Coarse	A-307 Grade A	Plain	View Details
37.76900	1/4-20 x 4" (PT) Square Head Bolts, Coarse, A-307 Grade A, Plain	747023	1/4"	20	4" (PT)	Coarse	A-307 Grade A	Plain	View Details
0.00000	1/4-20 x 3/4" (FT) Square Head Machine Bolts, Coarse, A-307 Grade A, Hot Dip Galvanize	733006	1/4"	20	3/4" (FT)	Coarse	A-307 Grade A	Hot Dip Galvanize	View Details
0.00000	1/4-20 x 1" (FT) Square Head Bolts, Coarse, A-307 Grade A, Hot Dip Galvanize	733008	1/4"	20	1" (FT)	Coarse	A-307 Grade A	Hot Dip Galvanize	View Details

Showing 1-20 of 374 Results

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Showing 1-20 of 374 Results

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Materials and Finishes

Square Head Bolts run from general-purpose carbon steel up to high-strength alloy and stainless, finished anywhere from plain and zinc to hot-dip galvanized for wet or outdoor work. Pair them with Finished Hex Nuts and Flat Washers to round out the assembly.

How to Choose

Start with the diameter, thread pitch, and length your assembly needs, then choose a grade that carries the working load and a finish suited to the environment. Step up to alloy or stainless when strength or corrosion resistance is critical.

Square Head Bolts Industry Applications

Square Head Bolts earn a place in shops, on jobsites, and on production floors. Marine & offshore and petrochemical bolt machinery and steel assemblies with them, while construction specify them for serviceable, high-strength joints. Heavy hex and standard patterns, sized to the diameter, length, and grade the connection calls for.

Frequently Asked Questions

What materials and finishes are square head bolts available in?

Square Head Bolts run from general-purpose carbon steel up to high-strength alloy and stainless, finished anywhere from plain and zinc to hot-dip galvanized for wet or outdoor work.

What are square head bolts used for?

Square Head Bolts are specified across marine and offshore, petrochemical, and construction, from structural framing and heavy equipment to machinery and general repair.

How do I choose the right square head bolts?

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?

Beyond fasteners, we carry PPE, hand tools, cutting tools, abrasives, and industrial supplies, all stocked at competitive prices and backed by fast shipping and people who know the products.