NATIONAL CNA-38357 Big Pin Tube Hro Socket 6-PIN Jr. 6C6 6D6

( Brand: National ), ( Manufacturer Part Number: CNA-38357 ), ( Model: 6-PIN ), ( Type: Tube Socket ), ( Country Of Origin: United States )

Review NATIONAL 6-pin Big Pin Tube Sockets Hro Jr. 6c6 6d6

The **National CNA-38357 6-Pin Big Pin Tube Sockets** are a precision-engineered, high-quality replacement component designed specifically for vintage and modern tube-based audio and radio equipment, particularly those utilizing the **6C6GT, 6D6GT, and 6V6GT** (and similar) tube types. These sockets are meticulously crafted to ensure a secure, reliable, and interference-free connection between the tube s **six large "big pin" bases** and the chassis or circuit board, making them an essential upgrade for collectors, restorers, and enthusiasts working on classic amplifiers, transmitters, and communication gear from the mid-20th century, including the **HRO 1935 series** and other high-end tube rigs.

Constructed from **durable brass or high-grade metal alloy**, these sockets feature a robust, **solder-lug design** that allows for a strong, long-lasting connection to the circuit, reducing the risk of loose contacts or signal degradation. The **6-pin configuration** accommodates the larger pin spacing of these power tubes, ensuring proper alignment and preventing accidental misinsertion a common issue with aftermarket or generic replacements. Each pin is **gold-plated or nickel-plated** (depending on the variant) to minimize corrosion, improve conductivity, and enhance durability, especially in environments where humidity or dust may be a concern. The socket s **threaded mounting holes** (typically **#10-32 or M4/M5**, depending on the model) allow for precise installation, ensuring a snug fit within the chassis while maintaining easy access for tube replacement.

Beyond their functional superiority, these sockets are designed with **retro aesthetics in mind**, often featuring a **clean, vintage-inspired finish** that complements the classic look of restored equipment. They are fully compatible with **standard tube holders** and **base adapters**, making them versatile for a wide range of applications, from **Hammond-style amplifiers** to **custom-built tube rigs**. Whether used in **audio amplifiers, transmitters, or experimental setups**, the CNA-38357 ensures a **clean, stable signal path** while reducing the risk of arcing or intermittent connections that can plague inferior or poorly designed sockets. For those seeking **authenticity, reliability, and performance** in their tube-based projects, these sockets represent an ideal blend of **craftsmanship and functionality**, making them a trusted choice among hobbyists and professionals alike.

**Pros and Cons of buying a National CN-A38357 6-Pin Big Pin Tube Sockets for HRO 1935 (6C6/6D6)**

1. **Compatibility and Fit:** These sockets are specifically designed for the HRO 1935 tube, which is a variant of the 6C6/6D6. The big pin configuration ensures a secure and proper fit, reducing the risk of misalignment or damage during insertion or removal. This is particularly important for tubes with delicate pins, as improper handling can lead to bent pins or socket damage.

2. **Durability and Quality:** National Semiconductor (now part of Texas Instruments) is a well-known brand in electronics, and their tube sockets are generally built to last. The CN-A38357 model is likely constructed with sturdy materials, including metal contacts and a reinforced socket body, which helps prevent wear over time. This can be beneficial for hobbyists or restorers who frequently handle tubes.

3. **Easy Installation and Removal:** The big pin design simplifies the process of inserting and removing the tube, as the larger pins are less likely to get misaligned or stuck compared to smaller pin sockets. This can save time and frustration, especially for beginners or those working with limited space.

4. **Compatibility with Other Tubes:** While primarily designed for the 6C6/6D6, these sockets may also work with other tubes in the same pin configuration (e.g., some 6V6 or 6L6 variants with similar pinouts). This versatility can be useful if you have multiple tube types in your collection or project.

5. **Availability and Support:** As a widely recognized brand, National s sockets are easier to find in electronics stores, online marketplaces, or through specialty tube suppliers. Additionally, if you encounter issues, there may be more resources or customer support available compared to lesser-known brands.

6. **Prevents Damage to Tubes:** Using the correct socket reduces the risk of damaging the tube s pins during handling. Incorrect sockets or DIY solutions (like bent wire leads) can bend or break pins, rendering the tube unusable. Proper sockets ensure gentle and controlled insertion.

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1. **Cost:** Compared to generic or no-name tube sockets, National s sockets may be more expensive. For hobbyists on a tight budget, this could be a significant drawback, especially if you need multiple sockets for different tubes.

2. **Potential Overkill for Occasional Use:** If you only use the HRO 1935 tube occasionally (e.g., in a single amplifier or radio project), investing in a dedicated socket may not be cost-effective. In such cases, a universal tube socket or a generic 6-pin socket might suffice, though they may not fit as securely.

3. **Limited Use Beyond the 6C6/6D6:** While the socket may work with some similar tubes, it is not universally compatible with all 6-pin tubes. For example, tubes like the 6V6 or 6L6 may have different pin configurations or voltage requirements, so this socket won t be interchangeable without verification.

4. **Availability of Alternatives:** There are other high-quality tube socket manufacturers (e.g., JJ Electronics, Radio Shack, or Chinese brands like "Tung-Sol" or "Sylvania-style" sockets) that offer similar or even better options at lower prices. Researching alternatives could yield a more budget-friendly solution without sacrificing quality.

5. **Potential for Counterfeit Products:** When purchasing online (especially from third-party sellers on platforms like Amazon or eBay), there is a risk of receiving counterfeit or low-quality replicas. Always buy from reputable sellers with good reviews and verify the product s authenticity before purchasing.

6. **Space Constraints:** If your chassis or circuit board has limited space, the size of the National socket (even though it s designed for big pins) might not fit neatly. You may need to modify the mounting or use a different orientation, which could complicate installation.

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The **National CN-A38357 6-pin big pin tube sockets** are a solid choice for anyone working with the HRO 1935 (6C6/6D6) tube, particularly if you prioritize durability, ease of use, and compatibility. The secure fit and brand reliability make them ideal for serious hobbyists, restorers, or professionals who frequently handle tubes. However, the higher cost and limited compatibility with other tube types may not justify the purchase for casual users or those with tight budgets.

If you are certain about the socket s fit and need a high-quality, long-lasting solution, this is a recommended option. For budget-conscious buyers or those with occasional use, exploring alternatives (e.g., JJ Electronics sockets or universal tube sockets) could be a more practical approach.

- You frequently work with the HRO 1935 tube and want a reliable, long-lasting socket.

- You value ease of use and want to minimize the risk of tube or socket damage.

- You are willing to pay a premium for a trusted brand.

- You are on a tight budget and can find a similarly rated socket from another manufacturer (e.g., JJ Electronics or Tung-Sol).

- You plan to use the socket only occasionally and are open to generic or universal options.

- You need to verify compatibility with other tubes before committing to the purchase.

Always cross-reference the socket s pinout with your tube s specifications to ensure a perfect match. If possible, consult with experienced tube enthusiasts or forums (e.g., Audiokarma, Gearslutz) for additional insights.

Details:

Offered are 6 white ceramic tube sockets for the National HRO Jr. Offered as is due to age. Each is marked CNA-38357. The sockets have clean wiring lugs-one or two is cut off, but each has enough lug remaining to use in a radio.

All are in good condition. Suitable for many other HRO model's from the mid 1930's.

part #: cna38357 price

• $54.99

specifications tubesocketvintagego:

• brand: National
• mpn: Cna-38357
• model: 6-pin
• type: Tube Socket
• country of origin: United States

payments tubesocketvintagego:

• other
• cash
• wallet: Google-pay
• credit card: Discover

returns tubesocketvintagego:

• paid by: Buyer
• policy: Returns Accepted
• time: 14 Days
• method: Money back

offer tubesocketvintagego:

• best offers: True
• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: March 2, 2026

shipping tubesocketvintagego:

• service: USPS Priority Mail, USPS Ground Advantage
• transit: 3-8 Days
• carrier: USPS
• cost: $13.30
• class: Expedited, Standard
• type: Calculated

general tubesocketvintagego:

• condition: Used
• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets

seller tubesocketvintagego:

• city: Lake Winola, Pennsylvania
• # reviews: 7998
• rating: 99.8%

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