Unbrako 3/8 X 1.1/4 Inch Socket Set Screws (Allen/Grub Screws) - Inch, (Pack of 10)

The Unbrako 3/8" x 1-1/4 Inch Socket Set Screws (Allen/Grub Screws) are precision-crafted, high-strength fasteners made for a wide variety of mechanical, automotive, industrial, and DIY applications. These headless screws, also known as grub screws, are designed to sit flush with the surface once installed, providing a low-profile, unobtrusive fastening solution. Made from hardened steel or alloy steel, these screws offer exceptional durability and resistance to wear, making them ideal for environments with moderate to heavy mechanical stress.

At 3/8" in diameter and 1-1/4" in length, these screws are suited for applications that require a strong, reliable grip without protruding fasteners. The coarse threads ensure excellent holding power, especially in materials subject to vibration or dynamic forces. The hex (Allen) drive provides a secure method of tightening the screws, reducing the risk of slipping or damaging the fastener during installation.

Product Features:

• Size and Length: The 3/8" diameter and 1-1/4" length offer the perfect combination of strength and length for medium-duty applications. The 1-1/4" length ensures enough thread engagement for a secure hold, while the 3/8" diameter provides the strength needed for a variety of fastening tasks.
• Material: Constructed from hardened steel or alloy steel, these screws deliver superior tensile strength, wear resistance, and durability. Hardened steel ensures the screws can withstand high stress, while alloy steel offers added resistance to fatigue, making them suitable for demanding environments.
• Hex (Allen) Drive: The hex (Allen) drive provides a more secure fit during installation compared to traditional slot or Phillips head screws. This design minimizes the risk of slippage and stripping, making installation easier and more precise. Ideal for use with Allen wrenches or hex keys, the hex drive is perfect for tight spaces where a standard screwdriver might not fit.
• Headless (Grub) Design: These headless screws are designed to sit flush with the surface after installation, offering a clean, low-profile finish. The headless design allows the screws to be used in applications where protruding screw heads might interfere with other components or machinery.
• Coarse Threads: The coarse threads on these screws provide superior gripping power, ensuring that they stay securely in place, even in environments subject to vibration or mechanical stress. Coarse threads also help to create a strong hold in softer or thicker materials, which is ideal for heavy-duty applications.
• Pack Size: The 100-piece bulk pack is perfect for large projects, maintenance, and repairs. This quantity ensures that you have a sufficient supply of high-quality screws for ongoing work, whether in an industrial setting, for automotive applications, or for general repairs.
• Corrosion Resistance: These screws are available with a protective coating such as black oxide or zinc plating, providing resistance to rust and corrosion. This makes them suitable for use in harsh environments, such as outdoor, marine, or industrial settings where exposure to moisture, chemicals, or other elements is common.

Applications:

The Unbrako 3/8" x 1-1/4 Inch Socket Set Screws are versatile fasteners that can be used in a variety of industries and applications:

• Mechanical Equipment: These screws are ideal for securing components in mechanical assemblies, such as gears, bearings, pulleys, shafts, flywheels, and other rotating machinery parts. The coarse threads ensure a tight grip, preventing loosening due to vibration or dynamic forces.
• Automotive Applications: The flush, low-profile design makes these screws perfect for securing automotive parts such as engine components, clutch assemblies, transmission systems, brakes, and suspension parts. The coarse threads provide excellent holding power even in high-vibration automotive environments.
• Industrial Machinery: These screws are frequently used in industrial applications where machinery components need to be secured. The coarse threads provide reliable hold in environments subject to mechanical stress or vibration, making them ideal for securing parts in motors, gearboxes, conveyors, and other heavy-duty industrial systems.
• Electronics and Electrical Equipment: The headless, low-profile design makes these screws ideal for securing components in electrical enclosures, circuit boards, connectors, and other electronics where space is limited and protruding screw heads would be problematic. The coarse threads ensure a secure and stable connection in these sensitive applications.
• DIY Projects and Home Repairs: Whether you're working on home improvement projects, machinery repairs, or custom builds, these screws provide a durable, reliable fastening solution. Their flush design makes them ideal for use in tight or restricted spaces, such as appliances, furniture, home improvement, and more.

Advantages:

• Strength and Durability: Made from hardened steel or alloy steel, these screws are built to last, providing high tensile strength and wear resistance. They can handle the demands of heavy-duty mechanical and industrial applications.
• Low-Profile, Headless Design: The headless design allows these screws to sit flush with the surface after installation, making them ideal for applications where space is tight or where a smooth surface is required for functionality or aesthetics.
• Coarse Threads for Superior Grip: The coarse threads ensure that these screws stay securely in place, even in environments where vibration, stress, or movement is present. This makes them perfect for use in machinery, automotive applications, and other high-vibration environments.
• Easy Installation with Hex Drive: The hex (Allen) drive makes installation easier and more secure. The Allen wrench or hex key allows for precise control when tightening the screws, minimizing the risk of slippage or damage to the screw.
• Corrosion-Resistant Coating: Available with black oxide or zinc plating, these screws offer protection against rust and corrosion, extending their lifespan and making them suitable for use in outdoor or industrial environments where exposure to moisture is common.
• Bulk Pack Value: The 100-piece pack ensures that you have an ample supply of screws for your projects, reducing the need for frequent reordering and providing excellent value for large projects, repairs, or maintenance.

Specifications:

• Diameter: 3/8" (0.375 inches)
• Length: 1-1/4" (1.250 inches)
• Drive Type: Hex (Allen)
• Thread Type: Coarse threads
• Material: Hardened steel, alloy steel, or stainless steel (depending on variant)
• Finish: Black oxide, zinc plating, or plain steel (varies by model)
• Quantity: 100 pieces per pack

Conclusion:

The Unbrako 3/8" x 1-1/4 Inch Socket Set Screws offer a secure, reliable fastening solution for a variety of mechanical, automotive, industrial, and DIY applications. Their headless design, coarse threads, and hex drive ensure a secure, flush fit that provides excellent holding power. Made from hardened steel or alloy steel, these screws are built to withstand mechanical stress, vibration, and wear, making them ideal for demanding environments. Whether used in machinery, automotive systems, or electrical assemblies, these screws offer the durability and performance needed to keep components securely in place. The 100-piece bulk pack offers great value, making them perfect for large-scale projects or ongoing maintenance.

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