ARP TLX-ARP640-0750-CL360A70 Bolt Oxide 661317368827 12POINT 1/4-20 0.750

( Brand: Arp ), ( Manufacturer Part Number: TLX-ARP640-0750-CL360A70 ), ( Type: Automotive ), ( Features: Easy Installation ), ( Item Height: 4.000 ), ( Item Length: 0.120 ), ( Item Weight: 0.1200 ), ( Item Width: 6.000 ), ( Fitment Type: Direct Replacement ), ( Generic Keywords 1: See Notes ), ( Intended Use: Automobiles ), ( Housing Color: Black ), ( Manufacturer Warranty: 1 Year ), ( UPC: 661317368827 )

Review ARP 12point Bolt 1/4-20 0.750 Black Oxide fits 750

The **ARP TLX-ARP640-0750-CL360A70** is a high-performance, precision-engineered **12-point bolt** designed for demanding industrial, automotive, and mechanical applications where reliability, durability, and consistent performance are critical. This bolt features a **1/4-20 UNC (Unified National Coarse) thread**, ensuring a secure and repeatable fit in threaded holes or components, while its **0.750-inch shank length** provides ample engagement depth to prevent loosening under vibration or dynamic loads. The **12-point drive system** delivers superior torque distribution, reducing cam-out and minimizing wear on both the bolt and the corresponding socket or wrench, making it ideal for high-torque applications where traditional hex bolts may struggle. The **CL360A70 designation** indicates a **black oxide finish**, which enhances corrosion resistance, improves grip in wet or oily environments, and offers a slightly higher coefficient of friction compared to untreated steel, further securing the bolt in place. Engineered from **high-strength alloy steel**, this bolt is heat-treated to achieve an optimal balance of strength, toughness, and fatigue resistance, ensuring it can withstand repeated stress cycles without deformation or failure. Its **smooth, precision-machined threads** and **consistent dimensional tolerances** guarantee a tight, leak-proof seal in applications such as engine mounts, suspension components, or heavy-duty machinery, where even minor inconsistencies could lead to operational failures. Whether used in automotive tune-ups, industrial assembly, or custom fabrication projects, this bolt exemplifies ARP s commitment to performance-driven hardware, offering a robust alternative to standard fasteners where extra security and longevity are required.

The **ARP TLX-ARP640-0750-CL360A70** is a **12-point bolt with a 1/4-20 thread, 0.750" shank diameter, and a CL360A70 finish (black oxide coating)**. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying This Bolt**

1. **High-Strength Material**

- The bolt is likely made from **high-strength steel** (e.g., Grade 5 or Grade 8), which provides excellent load-bearing capacity for structural and mechanical applications. This ensures durability under heavy loads and repeated stress cycles.

2. **Black Oxide Coating (CL360A70)**

- The black oxide finish offers **corrosion resistance**, making it suitable for outdoor or humid environments where rust could be an issue. It also provides a **non-reflective, matte surface**, which can be beneficial in applications where glare is undesirable.

- The coating is **self-lubricating** to some extent, reducing friction and wear during assembly and disassembly.

3. **12-Point Drive**

- A **12-point drive** (hex socket) allows for **easier tightening and loosening** compared to a standard 6-point bolt, as it distributes torque more evenly and reduces the risk of rounding the drive. This is particularly useful in tight spaces or when working with limited torque tools.

4. **Standard Threading (1/4-20 UNC)**

- The **1/4-20 UNC (Unified National Coarse)** thread is a **common standard**, meaning it is widely available and compatible with most standard hardware and tools. This reduces the risk of compatibility issues in most applications.

5. **Precision-Machined Dimensions**

- The **0.750" shank diameter** and **specific length (640 mm, or 25.2 inches)** suggest it is designed for **high-precision applications**, such as **industrial machinery, automotive, or aerospace components**. The tight tolerances ensure a proper fit in pre-drilled holes.

6. **Versatile Applications**

- **Heavy machinery and equipment**

- **Automotive and truck suspensions**

- **Agricultural machinery**

- **Marine applications (if properly sealed)**

- **Structural frameworks and rigging**

- **Custom fabrication projects**

7. **Long-Lasting Performance**

- The combination of **high-strength steel and black oxide coating** suggests this bolt is designed for **long-term use**, even in demanding conditions. It is less likely to fail prematurely due to corrosion or fatigue.

8. **Easy to Source Replacements**

- Since it follows standard dimensions, finding replacement bolts should not be difficult, even if the original supplier is unavailable.

---

### **Cons of Buying This Bolt**

1. **Potential Overkill for Light-Duty Applications**

- If the bolt is being used in a **low-stress environment** (e.g., light furniture, non-structural fixtures, or decorative projects), a **lower-grade bolt (e.g., Grade 2 or Grade 5 with a simpler finish)** would suffice. This could lead to **unnecessary cost** without added benefit.

2. **Black Oxide Coating May Not Be Ideal for All Environments**

- While the black oxide coating provides **moderate corrosion resistance**, it is **not as protective as galvanizing, zinc plating, or stainless steel** in **extreme conditions** (e.g., saltwater, high humidity, or chemical exposure). In such cases, a **different finish (e.g., hot-dip galvanized or stainless steel)** might be more appropriate.

- The coating can **wear off** over time, especially in abrasive environments, exposing the underlying steel to rust.

3. **Length May Be Impractical for Some Uses**

- At **640 mm ( 25.2 inches)**, this bolt is **extremely long**. While useful for **large-scale industrial or structural applications**, it may be **cumbersome or impractical** for smaller projects, leading to **wasted material or difficulty in handling**.

- If the application requires **shorter bolts**, purchasing multiple shorter lengths would be more cost-effective.

4. **Cost Considerations**

- High-strength bolts with specialized coatings (like black oxide) are generally **more expensive** than standard bolts. If budget is a constraint, a **lower-grade bolt with a simpler finish** may be a more economical choice for non-critical applications.

- The **bulk purchase cost** may also be higher due to the specialized nature of the part.

5. **Potential for Misuse in Non-Structural Roles**

- If this bolt is used in a **non-load-bearing or decorative role**, its **over-engineered strength** is wasted. In such cases, a **cheaper, standard bolt** would be sufficient, and the extra strength could lead to **premature wear or difficulty in installation** (e.g., over-tightening).

6. **Thread Stripping Risk in Soft Materials**

- While the **1/4-20 thread** is standard, if the bolt is used in **soft metals (e.g., aluminum, soft steel) or non-metallic materials (e.g., plastic, wood)**, the **sharp threads** could **strip the hole** if over-tightened or if the material is not pre-drilled properly.

7. **Limited Availability of Exact Matching Parts**

- While the **1/4-20 thread and 12-point drive** are common, the **specific combination of length, diameter, and coating** may not be stocked by all suppliers. This could lead to **longer lead times** or the need to order from specialized distributors.

8. **Potential for Misalignment in Large Assemblies**

- Due to its **length**, this bolt may be prone to **misalignment** in large assemblies unless properly guided. This could lead to **uneven stress distribution** or **premature failure** if not installed correctly.

---

### **Conclusion**

The **ARP TLX-ARP640-0750-CL360A70 bolt** is an **excellent choice for high-stress, industrial, or structural applications** where **corrosion resistance, strength, and precision** are critical. Its **12-point drive, black oxide coating, and standard threading** make it reliable for **heavy machinery, automotive, marine, or large-scale fabrication projects**.

However, it may be **overkill for light-duty or decorative uses**, where a **simpler, cheaper bolt** would suffice. Additionally, its **extreme length (640 mm)** could be impractical for smaller applications, and the **black oxide coating may not be sufficient for extreme corrosion environments**.

If you are working on a **large-scale industrial project, automotive suspension, or structural framework**, this bolt is a **strong, durable, and well-suited option**. For **smaller, lower-stress applications**, consider a **shorter, lower-grade bolt** to save cost and reduce unnecessary complexity.

---

### **Recommendation**

- You need a **high-strength, corrosion-resistant bolt** for **industrial, automotive, or structural applications**.

- The **length (640 mm) and diameter (0.750")** are necessary for your project.

- You require a **12-point drive** for easier torque application in tight spaces.

- The **black oxide coating** is sufficient for your environmental conditions (non-extreme corrosion).

- Your application is **low-stress** (e.g., furniture, light fixtures, or decorative work).

- You need **shorter bolts** (consider purchasing multiple shorter lengths instead).

- Your environment involves **extreme corrosion** (e.g., saltwater, chemicals), in which case **galvanized, stainless steel, or cadmium-plated bolts** may be better.

- You are working with **soft materials** (e.g., aluminum, plastic) where thread stripping could be an issue (pre-drill holes carefully or use a **fine-thread bolt** if needed).

- For **corrosion resistance in harsh environments:** **Stainless steel (Grade 304/316) or hot-dip galvanized bolts**.

- For **lower-stress applications:** **Grade 5 or Grade 8 bolts with a simpler finish (e.g., zinc plating)**.

- For **shorter lengths:** **ARP or equivalent bolts in standard lengths (e.g., 300 mm, 500 mm)**.

- For **easier installation:** **Hex head bolts with a 6-point drive** (if 12-point is unnecessary).

In summary, this bolt is a **premium choice for demanding applications** but may not be the most cost-effective or practical for simpler tasks. Always match the bolt to the **specific requirements of your project**.

Details:

Made from the highest quality materials. Whats more, you can't beat the gorgeous looks of Raps specially polished stainless steel fasteners, and their ability to resist rust. Built to outperform and outlast the competition. Factory Sealed - Brand new in box.

Supplier Title: ARP 1/4-20 x 0.750 12pt Black Oxide Bolts. They re truly maintenance free!, PRODUCT INFO: - ARP 1/4-20 x 0.750 12pt Black Oxide Bolts, MANUFACTURER PART NUMBER: Part Number: 640-0750,: SAE Bolt Kit, 8740 Chrome Molly, 1/4 -20, UHL, Socket Size: 5/16 12pt, Torque Value: 12 ft-lbs 16.3 NM, Maintenance Parts For OTHER. They re truly maintenance free!, PRODUCT INFO: - ARP 1/4-20 x 0.750 12pt Black Oxide Bolts, MANUFACTURER PART NUMBER: Part Number: 640-0750,: SAE Bolt Kit, 8740 Chrome Molly, 1/4 -20, 0.750: FEATURES Bolts. PRODUCT OVERVIEW: - Now you can use premium quality ARP stainless steel or chrome Molly fasteners to install most anything on a car, boat trailer.

part #: 661317368827 price

• $29.47

specifications otruckbedaccessories:

• brand: Arp
• mpn: Tlx-arp640-0750-cl360a70
• type: Automotive
• features: Easy Installation
• item height: 4.000
• item length: 0.120
• item weight: 0.1200
• item width: 6.000
• fitment type: Direct Replacement
• generic keywords 1: See Notes
• intended use: Automobiles
• housing color: Black
• manufacturer warranty: 1 Year
• upc: 661317368827

offer otruckbedaccessories:

• quantity: 4
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: April 16, 2026

seller otruckbedaccessories:

• # reviews: 157878
• rating: 99.7%
• city: Arlington, TX

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• cost: $0.00
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• type: Fixed
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• condition: New
• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories

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