Machine Screw Nuts

Machine Screw Nuts thread onto bolts and studs to lock an assembly together and hold it under load. Choosing the right nut style and grade keeps a joint tight under load, vibration, and changing conditions. South Coast Fasteners stocks Machine Screw Nuts in a full range of sizes, grades, and finishes, with fast 3-5 day shipping. Popular options include carbon steel machine screw nuts, stainless steel machine screw nuts, and zinc plated machine screw nuts.

Product Name	Diameter 1	Thread Pitch	Width	Height	Thread	Material	Finish
2.06200	10-32 x 11/32" x 1/8" Hex Machine Screw Nuts (Small Pattern), Fine, Low Carbon Steel, Plain	332125	10	32	11/32"	1/8"	Fine	Fine	Plain	View Details
2.86200	10-24 Hex Machine Screw Nuts, Coarse, Stainless Steel 18-8	764036	10	24			Coarse	Stainless Steel 18-8		View Details
2.98500	10-32 Hex Machine Screw Nuts, Fine, Stainless Steel 18-8	764042	10	32			Fine	Stainless Steel 18-8		View Details
4.64600	12-24 x 7/16" x 5/32" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Plain	332080	12	24	7/16"	5/32"	Coarse	Coarse	Plain	View Details
6.13800	12-24 Hex Machine Screw Nuts, Coarse, Stainless Steel 18-8	764038	12	24			Coarse	Stainless Steel 18-8		View Details
99.25000	#2-56 x 3/16" x 1/16" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325040	#2	56	3/16"	1/16"	Coarse	Coarse	Zinc Cr+3	View Details
2.04600	#2-64 x 3/16" x 1/16" Hex Machine Screw Nuts, Fine, Low Carbon Steel, Zinc Cr+3	325258	#2	64	3/16"	1/16"	Fine	Fine	Zinc Cr+3	View Details
1.61900	#3-48 x 3/16" x 1/16" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325060	#3	48	3/16"	1/16"	Coarse	Coarse	Zinc Cr+3	View Details
12.15500	#3-56 x 3/16" x 1/16" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325260	#3	56	3/16"	1/16"	Coarse	Fine	Zinc Cr+3	View Details
66.90000	#4-40 x 1/4" x 3/32" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325080	#4	40	1/4"	3/32"	Coarse	Coarse	Zinc Cr+3	View Details
105.15000	#4-40 x 3/16" x 1/16" Hex Machine Screw Nuts (Extra Small Pattern), Coarse, Low Carbon Steel, Zinc Cr+3	325090	#4	40	3/16"	1/16"	Coarse	Coarse	Zinc Cr+3	View Details
2.55400	#5-40 x 5/16" x 7/64" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325100	#5	40	5/16"	7/64"	Coarse	Coarse	Zinc Cr+3	View Details
4.16900	#5-44 x 5/16" x 7/64" Hex Machine Screw Nuts, Fine, Low Carbon Steel, Zinc Cr+3	325261	#5	44	5/16"	7/64"	Fine	Fine	Zinc Cr+3	View Details
1.72300	#6-32 x 5/16" x 7/64" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325120	#6	32	5/16"	7/64"	Coarse	Coarse	Zinc Cr+3	View Details
16.46000	#6-32 x 1/4" x 3/32" Hex Machine Screw Nuts (Extra Small Pattern), Coarse, Low Carbon Steel, Zinc Cr+3	325130	#6	32	1/4"	3/32"	Coarse	Coarse	Zinc Cr+3	View Details
3.46200	#6-40 x 5/16" x 7/64" Hex Machine Screw Nuts, Fine, Low Carbon Steel, Zinc Cr+3	325263	#6	40	5/16"	7/64"	Fine	Fine	Zinc Cr+3	View Details
2.04600	#8-32 x 11/32" x 1/8" Hex Machine Screw Nuts, Coarse, Corse, Low Carbon Steel, Zinc Cr+3	325140	#8	32	11/32"	1/8"	Coarse	Coarse	Zinc Cr+3	View Details
17.38000	#8-32 x 1/4" x 3/32" Hex Machine Screw Nuts (Extra Small Pattern), Coarse, Low Carbon Steel, Zinc Cr+3	325145	#8	32	1/4"	3/32"	Coarse	Coarse	Zinc Cr+3	View Details
16.15000	#8-32 x 5/16" x 7/64" Hex Machine Screw Nuts (Extra Small Pattern), Coarse, Low Carbon Steel, Zinc Cr+3	325150	#8	32	5/16"	7/64"	Coarse	Coarse	Zinc Cr+3	View Details
2.30800	#10-24 x 3/8" x 1/8" Hex Machine Screw Nuts, Coarse, Low Carbon Steel, Zinc Cr+3	325160	#10	24	3/8"	1/8"	Coarse	Coarse	Zinc Cr+3	View Details

Showing 21-40 of 56 Results

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Showing 21-40 of 56 Results

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Materials and Finishes

Choose Machine Screw Nuts by grade and finish, with carbon steel for general work, alloy for strength, and stainless for corrosion resistance, plus zinc and hot-dip galvanized options for the outdoors. Pair them with screws, environmental, and Bolts 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.

Machine Screw Nuts Industry Applications

Machine Screw Nuts earn a place in shops, on jobsites, and on production floors. Manufacturing and marine & offshore fasten sheet metal, ductwork, and housings with them, while construction mate them with tapped holes and nuts. Pan, flat, and round heads in Phillips and slotted, including self-tapping and self-drilling points.

Frequently Asked Questions

What materials and finishes are machine screw nuts available in?

Choose Machine Screw Nuts by grade and finish, with carbon steel for general work, alloy for strength, and stainless for corrosion resistance, plus zinc and hot-dip galvanized options for the outdoors. Common options include flat head machine screws and stainless steel machine screws.

What are machine screw nuts used for?

Machine Screw Nuts are specified across manufacturing, marine and offshore, and construction, from structural framing and heavy equipment to machinery and general repair.

How do I choose the right machine screw nuts?

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?

South Coast Fasteners stocks fasteners, PPE, hand tools, cutting tools, abrasives, and industrial supplies at competitive pricing, with fast shipping and a team that works the products daily. We also stock Flat Washers.