FASTENAL 13123-00352 Lock Nut Nyloc Zinc 3/4 GR2

( Brand: Fastenal ), ( Manufacturer Part Number: 13123-00352 ), ( Part Type: Lock )

Review FASTENAL Lock Nut 3/4 Gr2 Nyloc Zinc fits 2010

The **Fastenal 13123-00352 Lock Nut (3/4" - 10 Gr 2 Nyloc Zinc)** is a high-performance, self-locking fastener designed to provide reliable, vibration-resistant security for critical mechanical assemblies. Engineered with a **3/4-inch (19 mm) nominal thread size**, this nut is specifically rated for **Grade 2 steel**, ensuring compatibility with standard bolts and studs while delivering consistent torque and clamping force. The **Nyloc (nylon insert) design** embeds itself into the threads of the mating bolt upon installation, creating a friction-based lock that prevents loosening due to shock, vibration, or cyclic loading making it an ideal choice for automotive, industrial machinery, agricultural equipment, and heavy-duty applications where fastener security is paramount. Constructed from **zinc-plated steel**, this nut offers enhanced corrosion resistance in moderate to mildly corrosive environments, extending the lifespan of assemblies exposed to moisture, humidity, or mild chemical exposure. Its **hex head** provides a robust grip for wrenches, while the **smooth, unthreaded underside** ensures a clean, unobstructed surface for mounting on flat or slightly tapered surfaces. Whether securing structural components, machinery frames, or critical connections in demanding industrial settings, this lock nut combines durability, ease of installation, and long-term reliability to minimize maintenance and downtime.

**Pros and Cons of Buying Fastenal Part Number 13123-00352 (Lock Nut, 3/4" - 10 GR2, Nyloc, Zinc Plated)**

1. **Reliable Locking Mechanism** The Nyloc design ensures the nut stays securely fastened, reducing the risk of loosening due to vibration or torque fluctuations. This is particularly useful in automotive, industrial, or mechanical applications where components are subject to movement.

2. **Zinc Plating for Corrosion Resistance** The zinc coating helps protect the nut from rust and oxidation, extending its lifespan in outdoor or humid environments. This is beneficial for outdoor machinery, marine applications, or areas with high moisture exposure.

3. **Standardized Sizing** The 3/4" - 10 thread size is widely compatible with common bolts and studs, making it easy to source replacements or use in pre-existing assemblies without modification.

4. **Cost-Effective for Bulk Purchases** Fastenal offers competitive pricing, especially when buying in bulk, which can be advantageous for large-scale projects or frequent replacements.

5. **Easy Availability** As a stocked part from Fastenal, it is readily accessible through their extensive network of distribution centers, reducing lead times compared to specialty suppliers.

6. **Durable Material** The steel construction with zinc plating provides sufficient strength for moderate to heavy-duty applications, though it may not be ideal for extreme loads or high-temperature environments.

7. **No Additional Tools Required** Unlike some locking nuts that require special installation tools, the Nyloc design can typically be installed with standard wrenches or sockets.

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1. **Limited High-Temperature Resistance** While zinc-plated nuts are generally durable, they may not perform well in prolonged exposure to high temperatures (above 200 F/93 C), where other coatings (e.g., cadmium or stainless steel) might be preferable.

2. **Not Ideal for Extreme Loads** Although suitable for many applications, this nut is not designed for ultra-high-stress environments (e.g., heavy machinery, aerospace, or critical structural applications). For such cases, specialized fasteners like stainless steel or alloy nuts may be necessary.

3. **Potential for Over-Tightening Damage** The Nyloc design relies on the deformation of the locking lugs. Over-tightening can strip the threads or damage the lugs, rendering the nut ineffective. Proper torque specifications must be followed.

4. **Zinc Plating Limitations** While zinc plating offers corrosion resistance, it is not as robust as stainless steel or other coatings in highly corrosive environments (e.g., saltwater, industrial chemicals). For such conditions, alternative materials may be required.

5. **Compatibility with Certain Bolts** Some high-strength or coated bolts (e.g., cadmium-plated or stainless steel) may not pair optimally with zinc-plated Nyloc nuts due to potential galvanic corrosion or friction differences. Testing may be needed in mixed-material assemblies.

6. **Fastenal s Pricing May Vary** While generally competitive, prices can fluctuate based on demand, regional pricing, or bulk discounts. Always check current pricing before ordering, especially for large quantities.

7. **Potential for Counterfeit Parts** As a widely available part, there is a risk of purchasing counterfeit or low-quality replicas, particularly from unauthorized sellers. Purchasing directly from Fastenal or authorized distributors mitigates this risk.

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Fastenal part number **13123-00352 (3/4" - 10 GR2 Nyloc, Zinc)** is a practical and cost-effective choice for general-purpose applications where vibration resistance and moderate corrosion protection are required. Its Nyloc design ensures secure fastening, and the zinc plating provides adequate protection in most environments. However, it is not suitable for extreme temperatures, high-stress applications, or highly corrosive conditions without additional considerations.

For **standard mechanical, automotive, or light industrial use**, this nut is a reliable and accessible option. For **high-temperature, high-load, or corrosive environments**, alternative materials (e.g., stainless steel, alloy, or cadmium-plated nuts) should be considered.

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- **Buy from Fastenal** if you need a quick, reliable, and widely available solution for general applications where vibration resistance and basic corrosion protection are priorities.

- **Verify compatibility** with your bolts, especially if using high-strength or coated fasteners, to avoid potential issues like galvanic corrosion or improper locking.

- **Check torque specifications** to avoid over-tightening, which could compromise the nut s locking mechanism.

- **Consider alternatives** (e.g., stainless steel or alloy nuts) if your application involves extreme temperatures, heavy loads, or highly corrosive conditions.

- **Purchase in bulk** if you frequently replace this part, as Fastenal often offers discounts for larger quantities.

For most users, this part will meet expectations without issues, provided it is used within its intended specifications.

Details:

Designed specifically for trucks, trailers, and buses. Manufactured following strict OE standards to work like the original component. Made of high-quality components for durability, reliability, and performance. Fastenal 13123-00352 Lock Nut 3/4 10 Gr2 Nyloc Zinc: Part Number: Manufacturer.

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Engineered using the latest technology to ensure product lasts longer in service.

part #: 1312300352 price

• $15.78

specifications ouboaen:

• for years: 2010
• brand: Fastenal
• mpn: 13123-00352
• part type: Lock

shipping ouboaen:

• service: Standard
• type: Fixed
• cost: $0.00
• transit: 4-9 Days
• class: Standard

offer ouboaen:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 5
• sold: 0
• started: May 27, 2026

seller ouboaen:

• rating: 99.5%
• city: Los Angeles, California
• # reviews: 71070

returns ouboaen:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

general ouboaen:

• Boat Parts > Outboard Engines Components > Other
• condition: New

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• credit card: Mastercard
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