Unbrako 5/16 X 1.3/4 Inch Socket Set Screws (Allen/Grub Screws) - Inch, (Pack of 10)

The Unbrako 5/16" x 1.3/4 Inch Socket Set Screws (also known as Allen/Grub Screws) are high-quality, precision-engineered fasteners designed for a wide range of mechanical, automotive, industrial, and DIY applications. These headless screws provide a low-profile, flush fit, making them perfect for use in confined spaces or areas where a protruding screw head could cause interference. Made from hardened steel or alloy steel, these screws are designed to deliver excellent strength, durability, and resistance to wear, making them a reliable choice for securing components under high stress or vibration.

The 5/16" diameter and 1.3/4" length provide the right balance of strength and length for medium-duty applications that require a secure fastening without excessive protrusion. The coarse threads ensure a firm grip, while the hex (Allen) drive makes for easy installation and removal using an Allen wrench or hex key. These screws are widely used in mechanical assemblies, automotive systems, and industrial machinery, offering a versatile, dependable fastening solution.

Product Features:

• Size and Length: The 5/16" diameter and 1.3/4" length offer a solid and reliable fastening solution for medium-duty applications. The 1.3/4" length ensures that the screw has enough engagement for secure fastening, while the 5/16" diameter provides strength and stability, especially in applications that require a firm hold.
• Material: These screws are made from hardened steel or alloy steel, offering excellent strength and wear resistance. The hardened steel provides high tensile strength, while alloy steel enhances fatigue resistance, making these screws ideal for demanding applications where long-lasting durability is required.
• Hex (Allen) Drive: The hex drive allows for precise and easy installation with an Allen wrench or hex key. This type of drive reduces the risk of slippage or stripping during installation, providing better torque control and ensuring the screw is securely fastened.
• Headless (Grub) Design: These screws are headless, meaning they do not have a protruding head. Once installed, the screw sits flush with the surface, providing a smooth finish. This design makes the screws ideal for use in tight spaces or when clearance is required. The low-profile nature of these screws ensures that they won't interfere with surrounding components or machinery.
• Coarse Threads: The coarse threads offer a secure and strong grip, particularly when used in softer materials like aluminum, plastic, or wood. Coarse threads engage quickly and firmly, ensuring that the screw stays in place even in high-vibration or dynamic environments.
• Bulk Pack Size: The 200-piece pack offers excellent value, making these screws ideal for large-scale projects, routine maintenance, or high-volume repairs. Whether you’re working on a mechanical assembly, automotive system, or an industrial machine, the bulk quantity ensures that you have a steady supply of screws on hand for multiple tasks.
• Corrosion Resistance: Some versions of these screws come with a protective coating, such as black oxide or zinc plating, enhancing their resistance to rust and corrosion. This makes them ideal for use in outdoor, industrial, or marine environments where exposure to moisture or harsh chemicals is common.

Applications:

The Unbrako 5/16" x 1.3/4 Inch Socket Set Screws are highly versatile and suitable for a wide range of applications:

• Mechanical Assemblies: These screws are perfect for securing components such as gears, bearings, shafts, flywheels, and pulleys in machinery. The coarse threads ensure a tight, secure grip, while the headless design prevents interference with rotating parts.
• Automotive Applications: These screws are commonly used in engines, brake systems, suspension components, transmissions, and other automotive systems. The low-profile design is ideal for areas where space is limited and a smooth, flush fit is necessary.
• Industrial Machinery: Whether used in motors, pumps, gearboxes, conveyors, or other industrial equipment, these screws are designed to perform under stress and vibration. Their robust construction ensures that they stay securely fastened even in high-torque environments.
• Electrical and Electronic Systems: The flush, headless design makes these screws suitable for use in electrical enclosures, circuit boards, and connectors where space is limited, and a smooth, non-interfering surface is essential.
• DIY and Home Improvement Projects: These screws are also ideal for custom builds, appliance repairs, home renovation projects, or any other DIY applications where a low-profile, secure fastening solution is required.

Advantages:

• Strength and Durability: Made from hardened steel or alloy steel, these screws are designed to withstand high mechanical stresses, wear, and vibration. The coarse threads provide a firm, reliable grip, ensuring that the screw remains securely in place over time.
• Low-Profile Design: The headless design allows the screw to sit flush with the surface, offering a smooth and unobtrusive finish. This is particularly important when space is tight, or interference with surrounding components must be avoided.
• Coarse Threads for Secure Fastening: The coarse threads provide a strong, reliable grip, even in softer materials. They are ideal for applications requiring a secure hold and resistance to loosening over time.
• Easy Installation with Hex Drive: The hex (Allen) drive allows for precise, easy installation using an Allen wrench or hex key, reducing the risk of slippage or stripping. The drive type is perfect for confined spaces, where traditional screwdrivers may not fit.
• Corrosion Resistance: Many versions of these screws come with a protective coating such as black oxide or zinc plating, providing enhanced corrosion resistance and extending the lifespan of the fasteners in harsh environments.
• Bulk Pack Savings: The 200-piece pack offers great value, providing a large quantity of screws for big projects, regular maintenance, or industrial tasks without the need for frequent reordering.

Specifications:

• Diameter: 5/16" (0.3125 inches)
• Length: 1.3/4" (1.75 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: 200 pieces per pack

Conclusion:

The Unbrako 5/16" x 1.3/4 Inch Socket Set Screws are versatile, durable, and reliable fasteners designed for a variety of applications, including mechanical equipment, automotive systems, industrial machinery, and DIY projects. With their coarse threads for secure gripping and headless design for a flush fit, these screws provide a high-performance solution for securing components in high-stress or confined environments. Made from hardened steel or alloy steel, these screws offer exceptional durability and resistance to wear. The 200-piece pack provides excellent value, ensuring you have a steady supply of screws for large-scale projects or routine maintenance tasks. Whether you're working on machinery, automotive repairs, or electronic systems, these screws offer the strength and reliability needed for secure fastening.

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