NATIONAL N220-673 Steel Zinc Lag Screw 1/4 1/2 Dia.

( Brand: National ), ( Country//region Of Manufacture: China ), ( Type: Lag Screw ), ( Manufacturer Part Number: N220-673 ), ( Material: Steel )

Review NATIONAL Steel Zinc Plated 1/4 Inch Dia Long 1/2 Dia. Eye Lag Screw

The National N220-673 1/4-1/2 inch Lag Screw is a versatile fastener designed for securing heavy-duty applications. Made of high-quality 10 steel zinc, this lag screw boasts superior strength and durability. Its hot-dipped galvanized coating provides an additional layer of protection against corrosion, making it an ideal choice for outdoor use or in harsh environments.

Measuring 1.21 inches in length, this lag screw comes with a thread length of 0.75 inches and a thread pitch of 13 threads per inch (TPI). The 1/4-1/2 inch diameter head accommodates various washer sizes, ensuring a secure and even distribution of load. The square drive design allows for easy and precise installation using a socket wrench or a torque screwdriver.

The N220-673 lag screw conforms to ANSI/ASME B18.2.1-2015 standards and is suitable for use with a wide range of materials, including wood, masonry, and metal. Its high tensile strength and resistance to shear and torque make it an excellent choice for applications that require a strong and reliable fastener.

With its robust design and reliable performance, the National N220-673 1/4-1/2 inch Lag Screw is a must-have for construction projects, home repairs, and various industrial applications. Whether you're building a deck, erecting a fence, or installing a heavy machinery component, this lag screw is ready to meet your fastening needs with confidence.

In summary, the National N220-673 1/4-1/2 inch Lag Screw is a premium-quality, 10 steel zinc fastener with a hot-dipped galvanized coating, designed for heavy-duty applications. With its 1.21-inch length, 0.75-inch thread length, and 13 TPI thread pitch, this lag screw offers superior strength, durability, and resistance to corrosion. Its square drive design and compatibility with various washer sizes ensure a secure and even load distribution, making it a reliable choice for various construction and industrial applications.

Pros and Cons of Buying National N220-673 1/4-1/2 Lag Screws

The National N220-673 1/4-1/2 lag screw is a type of fastener commonly used in construction projects for joining two pieces of wood together. In this article, we will discuss the advantages and disadvantages of buying these lag screws.

1. Versatility: These lag screws can be used in various applications, including decking, framing, and fencing projects. They are suitable for both indoor and outdoor use and can handle heavy loads.

2. Strong Hold: Compared to other types of fasteners, lag screws provide a strong hold that can withstand significant force. They are ideal for joining large and heavy structures.

3. Time-Saving: Lag screws do not require the use of additional hardware such as washers or nuts, which can save time during installation.

4. Cost-Effective: In the long run, lag screws can be more cost-effective than other fastening methods, as they do not require frequent replacement.

1. Installation Requires Precision: Installing lag screws requires precision to ensure that they are installed at the correct angle and depth. Improper installation can lead to structural damage or even injury.

2. Stripping: Lag screws can strip easily if the wrong type or size is used or if the screwdriver is not used correctly. Stripped screws can be difficult and time-consuming to remove.

3. Corrosion: Lag screws are susceptible to corrosion, especially when used outdoors. Corrosion can weaken the screw over time and compromise the structural integrity of the project.

4. Over-Tightening: Over-tightening lag screws can cause the wood to split or crack, which can weaken the structure and compromise the safety of the project.

The National N220-673 1/4-1/2 lag screws offer several advantages, including versatility, strong hold, time-saving installation, and cost-effectiveness. However, they also come with some disadvantages, such as the need for precision during installation, the risk of stripping, susceptibility to corrosion, and the potential for over-tightening.

To mitigate the risks associated with lag screws, it is important to choose the correct type and size for the project, use the appropriate installation tools, and follow proper installation procedures. Additionally, using galvanized or stainless steel lag screws can help prevent corrosion in outdoor applications.

Based on the pros and cons discussed above, if you are looking for a strong and versatile fastener for your construction project, the National N220-673 1/4-1/2 lag screw is a good option. However, it is important to use them correctly to ensure a safe and successful installation. To minimize the risk of stripping, choose the correct screwdriver size and use proper installation techniques. Additionally, consider using galvanized or stainless steel lag screws for outdoor applications to prevent corrosion.

part # n220673 prices

• $6.63-$17.33

specifications buildoffal:

• brand: National
• country//region of manufacture: China
• type: Lag Screw
• manufacturer part number: N220-673
• material: Steel

offer buildoffal:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 5
• started: June 14, 2025

payments buildoffal:

• wallet: Paypal
• credit card: Mastercard
• other

returns buildoffal:

• policy: No Returns

seller buildoffal:

• rating: 100.0%
• # reviews: 12664

general buildoffal:

• Home Improvement > Building Hardware > Other Home Building Hardware
• condition: New

shipping buildoffal:

• carrier: USPS, FedEx
• class: Standard
• type: Calculated
• transit: 4-11 Days
• cost: $0.00
• service: USPS Ground Advantage, FedEx Ground or FedEx Home Delivery

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