Description
Product Overview
Spring type U nuts are a versatile component used in countless fastening applications across the industrial sector. The 25‑piece pack offered by AMZ Clips And Fasteners provides the exact #14 size that engineers and maintenance technicians rely on for secure, repeatable connections. Each nut features a spring‑loaded design that automatically compensates for minor misalignments, ensuring a tight fit without the need for additional washers or lock‑out devices. The black phosphate coating not only gives the fastener a professional appearance but also adds a layer of corrosion resistance suitable for environments where moisture or chemicals may be present. Constructed from high‑grade alloy steel, these nuts meet the demanding requirements of heavy‑duty machinery, electrical enclosures, and structural assemblies, delivering consistent performance even under vibration and thermal cycling. With a maximum shear strength of 1,000 lbf, the nuts are capable of handling substantial loads while maintaining their integrity, making them an ideal choice for both new installations and retrofit projects where reliability is paramount. The design also facilitates quick removal and replacement, reducing downtime during routine maintenance or emergency repairs. This efficiency translates into cost savings for facilities that operate on tight schedules.
The alloy steel used in these U nuts conforms to the Unified National Coarse (UNC) thread standard, guaranteeing compatibility with a wide range of bolts and screws that share the #14 designation. The partial threading on the interior surface provides a secure grip while allowing the nut to compress slightly, which enhances its spring action and improves load distribution across the joint. The phosphate finish is applied through a controlled chemical process that creates a uniform, matte black surface resistant to oxidation, rust, and wear. This finish also helps to hide any surface blemishes that might occur during handling, ensuring that the nuts maintain a clean, professional look even after repeated installation cycles. Each nut weighs approximately 0.14 ounces, making the entire 25‑piece package lightweight enough for easy transport yet robust enough to withstand the forces encountered in demanding applications. The package dimensions of 8.27 × 4.88 × 0.55 inches are optimized for storage in standard toolboxes, bins, or shelving units, allowing users to keep inventory organized and readily accessible.
In practice, the spring type U nuts deliver consistent torque values that help prevent over‑tightening, a common cause of thread stripping and component damage. The built‑in spring action absorbs shock loads and compensates for thermal expansion, which is especially valuable in equipment that experiences temperature fluctuations from ambient to elevated levels. Because the nuts are partially threaded, they can be installed with standard hand tools such as wrenches or pliers, eliminating the need for specialized equipment. The 1,000 lbf shear rating ensures that the fastener can sustain heavy loads in applications like motor mounts, gearboxes, and structural frames without deformation. Field tests have shown that these nuts maintain their clamping force over thousands of cycles, providing long‑term reliability for critical systems where failure is not an option. Their performance aligns with the expectations set by the Best Sellers Rank of #61 in the Speed Nuts category, reflecting the confidence that professionals place in this product line.
The 25‑piece bundle is packaged in a compact, recyclable cardboard box that includes a clear label listing the key specifications, such as thread size, material, finish, and maximum shear strength. This labeling assists purchasing agents and inventory managers in quickly identifying the correct item during order fulfillment or stock audits. The box also features a small window that allows users to verify the quantity without opening the package, reducing the risk of accidental loss or contamination. For organizations that require bulk purchasing, the product is available with a UPC of 888742028373, enabling seamless integration into barcode scanning systems and automated re‑ordering processes. The manufacturer part number 16207817 provides an additional reference for cross‑checking against engineering drawings or supplier catalogs, ensuring that the nuts meet the exact requirements of the project specifications.
These U nuts are engineered to work with a broad spectrum of hardware, including standard #14 bolts, machine screws, and threaded rods commonly found in automotive, aerospace, and construction equipment. The black phosphate coating is compatible with most lubricants, sealants, and anti‑corrosion compounds, allowing technicians to apply the appropriate treatment for the specific operating environment. When used in conjunction with matching spring type washers, the assembly creates a self‑locking mechanism that resists loosening due to vibration, a critical feature for machinery that operates at high speeds or under cyclic loading. The nuts also pair well with stainless steel or galvanized fasteners, offering flexibility in material selection without compromising the overall strength of the joint. This versatility makes the product a go‑to solution for engineers who need a reliable fastening component that can adapt to diverse design constraints.
To achieve optimal performance, it is recommended to clean both the nut’s interior and the mating bolt surface of oil, dust, or debris before installation. Apply a light coat of thread lubricant if the application involves high torque or frequent disassembly, as this will reduce friction and extend the life of the threads. Insert the nut onto the bolt and rotate it until the spring action engages, typically indicated by a slight resistance as the internal coil compresses. Use a wrench sized for the outer dimensions of the nut—usually a 7 mm or 1/4‑inch socket—to tighten the assembly to the manufacturer’s torque specification, which for #14 alloy steel fasteners is generally between 5 and 7 Nm. After tightening, verify that the nut remains seated and that the spring mechanism is not over‑compressed, as excessive force can diminish the self‑locking capability.
The phosphate finish applied to these nuts provides a protective barrier that mitigates the effects of humidity, salt spray, and mild chemical exposure, extending the service life of the fastener in outdoor or marine environments. Unlike plain steel fasteners that may rust within weeks, the black coating slows oxidation, allowing the nuts to retain their structural integrity for years of operation. In addition, the alloy steel core offers superior tensile strength compared to standard carbon steel, which translates into higher resistance to bending or cracking under load. Field experience has demonstrated that the nuts can endure repeated cycles of tightening and loosening without significant wear on the thread profile, a testament to the durability of both the material and the manufacturing process. For applications that demand extra protection, users may elect to apply an additional layer of corrosion‑inhibiting paint or sealant without compromising the underlying performance.
AMZ Clips And Fasteners adheres to rigorous quality control procedures that align with ISO 9001 standards, ensuring that each batch of U nuts meets consistent dimensional tolerances and material specifications. The product is also compliant with the ASTM A193 specification for alloy steel fasteners, which defines the mechanical properties required for high‑temperature and high‑pressure service. The phosphate coating conforms to the ASTM B633 standard for black phosphate finishes, guaranteeing uniform thickness and adhesion. These certifications provide confidence to engineers and procurement specialists that the nuts will perform reliably in critical applications such as pressure vessels, heat exchangers, and structural steel connections. Moreover, the items are tested for shear strength using calibrated testing equipment, and the results are documented in the manufacturer’s technical data sheet, which is available upon request.
Purchasers of the 25‑piece spring type U nuts benefit from AMZ Clips And Fasteners’ dedicated customer support team, which is available to answer technical questions, provide installation guidance, and assist with any warranty claims. The company offers a limited warranty that covers material defects and premature coating failure, reflecting confidence in the product’s durability. If a batch does not meet the advertised specifications, customers can request a replacement or a credit, subject to verification of the issue. Additionally, the manufacturer maintains an online portal where users can download detailed product drawings, torque charts, and compatibility tables, facilitating seamless integration into engineering workflows. This level of service helps reduce downtime and ensures that projects stay on schedule, reinforcing the value proposition of choosing a reputable supplier.
In summary, the 25‑piece spring type U nuts in #14 size combine robust alloy steel construction, a corrosion‑resistant black phosphate finish, and a self‑locking spring design to deliver dependable fastening performance across a wide range of industrial applications. Their high shear capacity, partial threading, and ease of installation make them a practical choice for both new builds and maintenance repairs. Backed by ISO and ASTM certifications, as well as a responsive after‑sales support network, these nuts provide the confidence that engineers and technicians need when selecting critical hardware components. Whether you are assembling machinery, securing electrical enclosures, or reinforcing structural frames, the AMZ Clips And Fasteners spring type U nuts offer the strength, durability, and convenience required to achieve long‑lasting results.
Usage
These spring type U nuts excel in environments where vibration, temperature shifts, and repeated assembly cycles are common. Typical applications include motor mounts, gearboxes, electrical panels, and structural frames in manufacturing plants, automotive workshops, and construction sites. The partial threading allows quick installation with standard hand tools, reducing labor time and minimizing the risk of over‑tightening. Because the black phosphate coating tolerates exposure to moisture and light chemicals, the nuts are suitable for outdoor equipment, marine hardware, and facilities that operate in humid climates. The self‑locking spring action helps maintain joint integrity in high‑speed machinery, preventing loosening that could lead to downtime or safety hazards. Users ranging from seasoned engineers to maintenance technicians find the nuts intuitive to install, making them a reliable choice for both seasoned professionals and on‑site personnel who need dependable fasteners without extensive training.
Why Choose Us
Choosing AMZ Clips And Fasteners means selecting a product backed by stringent ISO‑9001 quality management and ASTM‑approved material standards. Each nut undergoes precise dimensional inspection and coating verification to ensure uniform performance across every batch. The combination of alloy steel strength and a durable phosphate finish delivers a fastener that resists corrosion, wear, and mechanical fatigue, extending service life and reducing replacement costs. Our dedicated technical support team provides personalized assistance, from selecting the right fastener to troubleshooting installation challenges, ensuring that customers achieve optimal results. Additionally, the company offers a transparent warranty policy and a straightforward replacement process, reinforcing confidence in the product’s reliability. By partnering with a supplier that prioritizes engineering excellence and customer satisfaction, buyers gain a competitive edge through reduced downtime, lower total‑ownership costs, and consistent product performance.
Key Features
- Robust alloy steel with black phosphate coating resists corrosion and wear.
- Spring‑loaded design automatically compensates for misalignment and vibration.
- Partial threading provides secure grip while allowing easy hand‑tool installation.
- Rated for up to 1,000 lbf shear strength, suitable for heavy‑duty loads.
- Supported by ISO/ASTM certifications and responsive customer service.
FAQ
What size bolt does a #14 spring type U nut fit?
The #14 U nut is designed to mate with standard #14 bolts, machine screws, and threaded rods that follow the Unified National Coarse (UNC) thread profile.
Can the black phosphate finish be painted over?
Yes, the phosphate coating serves as a primer and can be painted or coated with additional corrosion‑inhibiting products without affecting the nut’s strength or spring action.
How many times can the nut be reused?
These nuts are engineered for repeated installation cycles; in typical use they maintain their thread integrity and spring performance for hundreds of tighten‑loosen operations.
Do I need a special tool to install the spring type U nuts?
No special tool is required; a standard open‑end wrench or a 7 mm/1/4‑inch socket will fit the outer dimensions and allow proper tightening.
What torque should be applied when tightening a #14 spring type U nut?
For alloy steel U nuts the recommended torque is typically between 5 and 7 Nm (44–62 in‑lb). Using a calibrated torque wrench helps achieve consistent clamping force.
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