Ever found yourself overwhelmed by the sheer number of hex nut manufacturers in the USA? You’re not alone. Choosing the right supplier can make or break your project, affecting everything from reliability to cost and turnaround time. That’s why we’ve done the heavy lifting for you—comparing the top U.S. factories side by side. Discover which manufacturers deliver the quality, consistency, and service your business deserves. Ready to make your sourcing decision easier? Let’s dive in and find your perfect match!

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Decker

Product Details:
Decker specializes in the manufacturing and global sourcing of various types of nuts and fasteners, including assembly wheels, flange nuts, weld nuts (flange, hex, round, square), guardrail nuts, structural nuts, cold-formed components, and pipe/drain plugs.

Application Scenarios:
– Automotive industry applications
– Structural engineering or construction uses
– Agricultural equipment and machinery

Pros:
– Wide range of specialty and standard fastener products
– Capabilities in both manufacturing and global sourcing
– Focus on quality standards, including IATF 16949-2016 and ISO-14001:2015

Cons:
– No detailed technical specifications or product dimensions provided
– Limited information on product customization options or specific engineering

Heavy Hex Nuts and Domestic Nuts – Dyson Corp.

Product Details:
Dyson Corp. manufactures heavy hex nuts and a wide selection of domestic nuts, including jam nuts, flange nuts, square nuts, D-Loc nuts, locking nuts, coupler nuts, custom nuts, nylon inserted nuts, cap nuts, and slotted nuts. All products are made in-house using domestically-poured steel and various materials, guaranteeing 100% American-made parts. Custom manufacturing for large diameter and specialized nuts is available.

Technical Parameters:
– Diameters from 1” through 26”
– Meets ASTM A194 and ASTM A563 standards
– Threads: UN, UNC, UNR, UNF (available in left or right hand)
– Materials: Alloy, Stainless, Nitronic, Inconel, Monel, Titanium, Brass, Bronze,

Application Scenarios:
– Infrastructure and construction projects
– Hydropower installations
– Oil and gas industry applications
– Bridge and other high-strength structural applications

Pros:
– 100% American-made from USA-poured or DFARS-compliant materials
– Manufactured in-house for consistency and quality control
– Custom large-diameter nuts and special nut types available per customer
– D-Loc nuts provide high resistance to liquid penetration and vibration

Cons:
– No mention of international production or sourcing options for customers
– Limited information on delivery times or inventory lead time

MRL Manufacturing Corp.

Product Details:
MRL Manufacturing Corp. produces hex nuts, round nuts, cap (acorn) nuts, and internal threaded parts, specializing in stainless steel, steel, brass, and aluminum parts. The company serves only distributors and offers both standard and custom ordered components, including cross-referencing part numbers and manufacturing from prints, samples, or designs.

Technical Parameters:
– Manufactures products from stainless steel, steel, brass, and aluminum
– Capable of producing special order parts from customer prints, samples, or
– Cross-reference availability for part numbers from major manufacturers

Application Scenarios:
– Aerospace component assemblies
– Military equipment manufacturing
– Electronic device construction
– General commercial hardware distribution

Pros:
– Over 20 years of experience in quality part manufacturing
– Ability to produce custom and special order parts
– Supports cross-referencing part numbers from leading manufacturers
– Prompt and diverse customer service communication options

Cons:
– Sells exclusively to distributors, not direct to end-users
– Limited public technical detail/specifications available online

Stanlok | Custom Manufacturing of Nuts & Pins

Product Details:
Stanlok manufactures a range of industrial locknuts, lockwashers, and related fastening solutions designed for heavy-duty applications to secure bearings, shafts, and other components. Their products are used to prevent loosening of mechanical assemblies under vibration and heavy loads.

Technical Parameters:
– Available in standard and custom sizes to fit shaft diameters from small to
– Made from high-grade steel and other durable materials
– Designed to fit various thread profiles and standards, such as metric and inch
– Products include self-locking features via mechanical means like lockwashers,

Application Scenarios:
– Securing bearings on rotating shafts in heavy machinery
– Use in gear assemblies and mechanical power transmission systems
– Industrial equipment subjected to vibration, such as pumps, conveyors, and

Pros:
– Provides reliable locking under high-vibration and heavy-load conditions
– Wide variety of locknut types and sizes for diverse industrial needs
– Custom manufacturing options for specialized applications
– Enhances safety by reducing risk of fastener loosening and equipment failure

Cons:
– May require special tools or precise installation procedures
– Possibly higher cost compared to standard fastening solutions

America’s leading supplier of high-precision fasteners

Product Details:
High-precision fasteners, including products and services related to fasteners and bolting, forging and heat treatment, specialized coating and plating, 24-hour hotshot cover, and specialist technical support.

Technical Parameters:
– High-precision manufacturing
– Specialized coating and plating options
– Forging and heat treatment processes
– 24-hour emergency response service

Application Scenarios:
– Oil & gas industry
– Power generation facilities
– LNG, petrochemical, and process gas sectors
– Industrial and infrastructure projects

Pros:
– Wide industry coverage across critical sectors
– Offer of fast, 24/7 emergency delivery and support
– Technical support for specialized requirements
– Advanced manufacturing like forging, heat treatment, and coating available

Cons:
– Specific product technical specifications not detailed on this page
– Limited immediately visible detail about product range or certifications

Custom Fasteners Manufacturer | National Bolt and Nut Corp.

Product Details:
National Bolt & Nut Corporation manufactures high-quality, custom fasteners such as bolts, nuts, washers, screws, sockets, and screw machine products in both standard and non-standard sizes. Product offerings include anchor bolts, carriage bolts, flange bolts, hex head cap screws, metric bolts, custom nuts (hex, square, flange, etc.), and washers (USS, SAE, lock, beveled, etc.). Available in various materials and finishes, products cater to diverse industrial needs.

Technical Parameters:
– Materials: steel, stainless steel, brass, nylon, Monel, Hastelloy, copper,
– Finishes: zinc, galvanized, black oxide, hot dipped galvanized
– Head types: hex, bent, round, carriage, T-head, countersunk
– Manufacturing capabilities: milling, drilling, tapping, flattening, turning,

Application Scenarios:
– Construction industry for structural and wood-to-wood connections
– Mining industry for surface and underground operations under heavy loads
– Transportation sector for railroad, tractor-trailer, and vehicle manufacturing
– Petrochemical and alternative energy sectors requiring corrosion-resistant

Pros:
– Wide range of standard and custom fasteners with immediate delivery
– ISO certified, A2LA accredited quality control and material/lot traceability
– 24-hour emergency turnaround services available
– Expert assistance and fast custom quotes with reliable delivery

Cons:
– Limited information on cons; possible complexity or longer lead times for
– No explicit mention of international shipping or support

Hex Nuts manufactured and supplied by HASM North America

Product Details:
HASM North America manufactures and supplies a wide range of fasteners, particularly hex nuts, along with bolts, screws, studs, washers, and anchors. Their products are available in multiple specialty alloys, including A-286, Hastelloy, Inconel, Duplex and Super Duplex stainless steels, and Monel, among others.

Technical Parameters:
– Products offered in various high-performance alloys (e.g., A-286, Hastelloy
– Product types include hex nuts, heavy hex nuts, cap nuts, bolts, screws, studs,
– Specialty fasteners suited for metric and imperial applications
– Range of head types and threading options for screws and bolts

Application Scenarios:
– Industrial and engineering applications requiring corrosion-resistant and
– Projects in chemical processing, petrochemical, marine, and power generation
– Use in extreme environments such as high temperatures, high pressures, or

Pros:
– Wide selection of fastener types and engineered alloy materials
– Suitable for demanding applications requiring high performance and corrosion
– Availability of both standard and specialty, metric and imperial fasteners

Cons:
– Highly specialized product range may not suit general-purpose or cost-sensitive
– Lack of detailed technical specifications or certifications provided on the

Heavy Hex Nut Manufacturer | KD Fasteners, Inc.®

Product Details:
KD Fasteners, Inc.® is a manufacturer and supplier of heavy hex nuts as well as other standard fasteners including bolts, nuts, and rivets. Their product range includes heavy hex nuts for industrial and structural applications.

Technical Parameters:
– Heavy hex nut construction (no detailed specs such as sizes or materials
– Variety of standard fastener types offered including bolts (anchor, carriage,
– Customized and standard options possibly available across fastener lines

Application Scenarios:
– Industrial and structural bolting applications
– Construction requiring heavy-duty nuts and bolts

Pros:
– Wide product selection covering numerous fastener types (bolts, nuts, rivets)
– Specialized in heavy hex nuts suitable for demanding applications

Cons:
– No specific technical details, certifications, or dimensional data in the
– No information on customization, lead times, or materials

Hex Nut & Locking Nuts Manufacturer – MW Components

Product Details:
MW Components manufactures a wide range of hex nuts, locking nuts, and fasteners. Their catalog includes standard and custom options, with products such as API B7 studs & nuts, bolts, screws, captive screws & assemblies, washers, and more. The nuts are used for fastening applications and are offered in various materials, sizes, and configurations.

Technical Parameters:
– Available in standard and custom sizes
– Types include hex nuts, locking nuts, API B7 studs & nuts
– Compatible with various bolts, studs, and fasteners
– Various material and finish options offered

Application Scenarios:
– Industrial manufacturing
– Construction and infrastructure projects
– Machinery and equipment assembly
– OEM and custom engineering applications

Pros:
– Wide range of product types and custom manufacturing options
– USA made and compliant with relevant certifications
– Supports both standard and specialized applications

Cons:
– Website functionality may be limited on unsupported browsers
– No detailed technical specifications provided on the main page

Structural Nuts – Unytite, Inc.

Product Details:
Unytite is a leading manufacturer of structural bolts and heavy hex nuts, producing all structural products in the USA with the highest rated material. Their heavy hex nuts are commonly specified for high temperature or high pressure industrial applications and are thicker across flats than standard finished hex nuts of the same size. Product lines include ASTM A563 DH Heavy Hex Nut, ASTM A563 DH3 Heavy Hex Nut, and ASTM A194 Heavy Hex Nut, available in several sizes and finishes.

Technical Parameters:
– ASTM A563 DH Heavy Hex Nut: Size 1/2″–2″, Finish options: Plain/Black,
– ASTM A563 DH3 Heavy Hex Nut: Size 5/8″–2″, Finish options: Plain/Black
– ASTM A194 Heavy Hex Nut: Size 5/8″–2″, Finish options: Plain/Black, Hot Dip
– Heavy hex nuts are thicker across flats than finished hex nuts of the same

Application Scenarios:
– High temperature industrial environments
– High pressure applications
– Structural steel construction
– Use in automotive and heavy equipment manufacturing

Pros:
– Manufactured with top-rated, domestically sourced materials
– Higher strength design compared to finished hex nuts
– Wide range of sizes and finish options to suit diverse environments
– Strict quality assurance with ISO certification and U.S.-based production

Cons:
– Heavier and bulkier than standard finished hex nuts, which may not be suitable
– Limited size range (from 1/2″ or 5/8″ up to 2″ as specified)

Comparison Table

Company	Product Details	Pros	Cons	Website
Decker	Decker specializes in the manufacturing and global sourcing of various types of	Wide range of specialty and standard fastener products Capabilities in both	No detailed technical specifications or product dimensions provided Limited	www.deckernut.com
Heavy Hex Nuts and Domestic Nuts – Dyson Corp.	Dyson Corp. manufactures heavy hex nuts and a wide selection of domestic nuts,	100% American-made from USA-poured or DFARS-compliant materials Manufactured	No mention of international production or sourcing options for customers	www.dysoncorp.com
MRL Manufacturing Corp.	MRL Manufacturing Corp. produces hex nuts, round nuts, cap (acorn) nuts, and	Over 20 years of experience in quality part manufacturing Ability to produce	Sells exclusively to distributors, not direct to end-users Limited public	www.mrl-mfg.com
Stanlok	Custom Manufacturing of Nuts & Pins	Stanlok manufactures a range of industrial locknuts, lockwashers, and related	Provides reliable locking under high-vibration and heavy-load conditions Wide	May require special tools or precise installation procedures Possibly higher
America’s leading supplier of high-precision fasteners	High-precision fasteners, including products and services related to fasteners	Wide industry coverage across critical sectors Offer of fast, 24/7 emergency	Specific product technical specifications not detailed on this page Limited	www.ameribolt.com
Custom Fasteners Manufacturer	National Bolt and Nut Corp.	National Bolt & Nut Corporation manufactures high-quality, custom fasteners	Wide range of standard and custom fasteners with immediate delivery ISO	Limited information on cons; possible complexity or longer lead times for
Hex Nuts manufactured and supplied by HASM North America	HASM North America manufactures and supplies a wide range of fasteners,	Wide selection of fastener types and engineered alloy materials Suitable for	Highly specialized product range may not suit general-purpose or cost-sensitive	hasmnorthamerica.com
Heavy Hex Nut Manufacturer	KD Fasteners, Inc.®	KD Fasteners, Inc.® is a manufacturer and supplier of heavy hex nuts as well as	Wide product selection covering numerous fastener types (bolts, nuts,	No specific technical details, certifications, or dimensional data in the
Hex Nut & Locking Nuts Manufacturer – MW Components	MW Components manufactures a wide range of hex nuts, locking nuts, and	Wide range of product types and custom manufacturing options USA made and	Website functionality may be limited on unsupported browsers No detailed	www.mwcomponents.com
Structural Nuts – Unytite, Inc.	Unytite is a leading manufacturer of structural bolts and heavy hex nuts,	Manufactured with top-rated, domestically sourced materials Higher strength	Heavier and bulkier than standard finished hex nuts, which may not be suitable	www.unytiteusa.com

Frequently Asked Questions (FAQs)

How can I find reliable hex nut manufacturers in the USA?
Start by searching industry directories, trade associations, and online B2B marketplaces. Attending trade shows or using recommendations from industry contacts can also help. Always review company profiles, certifications, and client feedback to gauge reliability.

What certifications should I look for in a hex nut manufacturer?
Look for manufacturers ISO 9001 certified for quality management. If your application is specialized, check for relevant industry certifications like ASTM, SAE, or automotive and aerospace standards that ensure product reliability.

How do I compare prices between different manufacturers?
Request quotes from several manufacturers, making sure to specify quantities, materials, sizes, and additional services like plating or packaging. Compare not just the price per unit but also shipping, payment terms, and lead times.

What should I ask about minimum order quantities (MOQs) and lead times?
Ask each manufacturer about their minimum order requirements and average production lead times for your specific hex nuts. Make sure their capacity aligns with your needs, whether you need small prototype runs or large-scale production.

Why is local manufacturing important when choosing a supplier?
Choosing a USA-based manufacturer can reduce shipping costs and lead times, improve communication, and ensure compliance with local quality and labor standards. It can also make it easier to visit facilities or resolve issues quickly.