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Bfcm Special Jfast 3140msf - 5/16-18x2 1/2 Slotted Flat Machine Screw Fully Threaded Zinc, Case Quantity: 800 Family Size [m5RUaDEG]

$57.99 $185.99 -69%

JFAST 3140MSF Machine ScrewThe JFAST 3140MSF Machine Screw is a versatile and high-quality fastener designed for a wide range of applications. Crafted with precision, this fully threaded screw features a flat head and slotted drive style, making it e

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Bfcm Special Jfast 3140msf - 5/16-18x2 1/2 Slotted Flat Machine Screw Fully Threaded Zinc, Case Quantity: 800 Family Size [m5RUaDEG]

JFAST 3140MSF Machine Screw

The JFAST 3140MSF Machine Screw is a versatile and high-quality fastener designed for a wide range of applications. Crafted with precision, this fully threaded screw features a flat head and slotted drive style, making it easy to install and remove. With a size of 5/16-18 and a length of 2 1/2 inches, it is perfect for securing parts in machinery, furniture, and other industrial or DIY projects. The zinc finish not only enhances its durability but also provides excellent corrosion resistance.

Key Features:

  • Flat Head: The screw features a flat head design, which allows for flush installation and is ideal for concealed fastening.
  • Slotted Drive: The slotted drive style ensures compatibility with a wide range of screwdrivers, making it easy to tighten and loosen.
  • Full Thread: The fully threaded design provides increased strength and reduces the need for additional inserts or washers.
The zinc finish on the screw adds an extra layer of protection against rust and corrosion, ensuring long-lasting performance even in harsh environments.

Product Specifications

The JFAST 3140MSF Machine Screw is made from high-quality steel, known for its strength and durability. With a head diameter ranging from 0.556 to 0.597 inches and a head height of 0.165 to 0.191 inches, it offers a secure fit and reliable fastening. The screw is fully threaded, extending the entire length, which provides maximum holding power. The material is treated with zinc to enhance its resistance to corrosion, making it suitable for use in outdoor and indoor applications alike.

Practical Uses and Benefits

Whether you are an engineer, mechanic, or DIY enthusiast, the JFAST 3140MSF Machine Screw is an essential tool in your inventory. Its versatility makes it ideal for various applications, including metalworking, woodworking, and automotive repairs. The screw's strength and durability ensure that it can withstand heavy loads and harsh conditions. By choosing this product, you are investing in a high-quality fastener that will provide years of reliable service. Its convenient case quantity of 800 pieces ensures that you always have the screws on hand when you need them, saving you time and effort.

What Our Customers Say

February 5, 2026

Absolutely no complaints!

I'm happy with my online product and its very great order.

- Rhoda L..

February 5, 2026

Absolutely no complaints!

An excellent build, and it feels very, very solid.

- Elain D..

February 5, 2026

Absolutely no complaints!

A very well-conceived and a very useful product.

- Tudur V..

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