Precision fasteners serve as critical components across a wide range of industrial and manufacturing settings. National Bolt & Nut Corp provides custom made screws that meet specific performance demands and dimensional requirements. With decades of experience and a wide variety of manufacturing capabilities, we support customers in applications that require precision, durability, and consistent quality.

Custom Cap Screws Built for Application-Specific Needs

Cap screws are externally threaded fasteners typically used with nuts and tapped holes. They are widely applied in machinery, structural assemblies, and equipment builds. These fasteners offer a solid shank and consistent threading, making them well-suited for precise and secure installation.

Several types of custom made screws are available, each selected based on the project’s requirements:

• Socket Head Cap Screws feature a recessed hex drive and cylindrical head. These are used where space is limited and high torque is required.
• Hex Head Cap Screws offer a six-sided head for easy wrench tightening. They are common in construction and automotive assemblies.
• Button Head Cap Screws provide a lower profile and are often chosen when clearance is an issue.
• Flat Head Cap Screws sit flush with the surface when installed, ideal for applications where a smooth finish is necessary.
• Shoulder Screws, also known as stripper bolts, include an unthreaded shoulder and serve as pivots or guides in mechanical systems.

Our custom socket head cap screws are manufactured to meet performance standards while aligning with tight design parameters. Whether you require corrosion resistance, heat tolerance, or a specific coating, we offer a wide selection of materials and finishes, including stainless steel, alloy steel, Monel, and Teflon-coated options.

Small Screws for Precision Assemblies

Small screws may appear simple, but their function is anything but minor. These fasteners are widely used in compact, high-precision assemblies, from electronics and instrumentation to medical devices and aerospace components.

Common types of custom screws include:

• Machine Screws, which are uniformly threaded and work well in tapped holes or with nuts.
• Micro Screws, often less than 0.06 inches in diameter, ideal for watches, cameras, and circuit boards.
• Set Screws, headless and fully threaded, used to secure components inside other parts.
• Self-Tapping Screws, which cut threads into softer materials like plastics or thin metal.

These screws are produced with tight tolerances, clean finishes, and consistent sizing to meet demanding requirements. We manufacture small custom made screws using materials such as stainless steel, brass, aluminum, nylon, and specialty alloys. Each screw is crafted for performance within miniature designs, helping improve longevity and assembly integrity.

Manufacturing Capabilities and Quality Standards

From fast turnarounds to high-volume production, National Bolt & Nut Corp delivers fasteners that match both the technical demands and timelines of our customers. We maintain ISO 9001:2015 certification and follow thorough inspection practices, including dimensional checks and material verification. Each custom screw is produced with consistency and reliability in mind.

Request a Quote for Custom Fasteners

We offer full support through the design and quoting process. Whether you need a custom socket head cap screw for an industrial machine or a precision small screw for an electronic device, our team provides responsive service and expert insight. Emergency production is available for time-sensitive orders.

Contact us today to request a quote or learn more about our custom made screws and fastening solutions.

With the ability to tap" their own mating threads, tapping screws are ideal for applications where you do not have rear access to install a nut or you are unable to tap a hole. National Bolt & Nut offers a large assortment of both pan head crossed recessed tapping screws and hex washer head tapping screws.

Designed for steel applications, our line of tapping screws feature thread forming locking threads and possess a clear zinc finish. However, additional finish options are also available upon request. Our tapping screws may also be constructed from a variety materials, depending on your application requirements.

Click on a product listing below or contact our company for more information about our premium line of tapping screws. You may also use our handy information request form to inquire after further details."

Socket screws feature a number of different head types and sizes, and are fastened using a hex head socket wrench matching the slot size. National Bolt & Nut Corporation’s selection of socket screws includes flat head and button head configurations when a low-profile appearance is desired, as well as longer socket heads for when fastener visibility is more important. We also carry headless socket set screws, and rotating socket head shoulder screws constructed from alloy steel.

All of our socket screw products, from flat heads to set screws, meet ANSI B18.3 size specifications. We offer a number of options for fine or coarse threads, as well as plain or custom finishes. In addition, we can source and manufacture from other materials upon customer request. Drill down for thread sizing options, and contact National Bolt with any further questions on our socket screw inventory.

As an integral part of our full line of fastener products, and critical to any building or structural application, National Bolt & Nut Corporation’s selection of washers is available to meet your industrial requirements. Important due to their ability to both spread load distribution and prevent fastener slippage, washer selection should be carried out with as much care as any other component. Our washer options include flat, helical spring lock, structural, and beveled washers. In addition, we offer metric and standard options, as well as washers meeting either USS or SAE standards.

Our standard washers are typically constructed from hardened alloy steel, with the exception of beveled washers, which are produced with medium carbon steel. However, other material selections are available based upon your application. We also feature washers meeting ASTM and DIN standards, and can aid in product selection. Contact us for more information.

Offering an extensive inventory of premium rods, rivets, and pins, National Bolt & Nut Corporation is pleased to serve your fastener needs. Our rods, rivets, and pins are suitable for temporary or permanent applications, with varying styles and fastening mechanisms. Product selections include dowel pins, cotter pins, threaded rods, and rivets. Our threaded rods possess the highest fastening strength in this product family, suitable for mechanical, automotive, and other applications.

Dowel pins, cotter pins, and rivets are better-suited when temporary fastening is the only requirement. Cotter pins, or split pins, feature a butterfly-type design, with an extended prong for easier separation. When ultra-precise alignment of fastened components is a priority, dowel pins are the right choice, and are typically used in furniture and hanging applications. All of our rods, rivets, and pins are available in varying sizes, materials, and finishes, and conform to ANSI B18.8.2 specifications. For more information, please contact us today.