1. Hex Keys & Wrenches Products
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  3. PROTO 388226-3

PROTO 388226-3 Hex Key Plomb Tool Allen Wrench 7/16

388226-3 Proto 7/16 Hex Key Plomb Tool Co Usa Large Allen Wrench Industrial

( Brand: Proto ), ( Manufacturer Part Number: 388226-3 ), ( Type: L-shaped Hex ), ( System Of Measurement: Standard ), ( Size: 7/16 In ), ( Country Of Origin: United States )

Review PROTO 7/16 Hex Key Plomb Tool Co Usa Large Allen Wrench Industrial

Introducing the Proto 388226-3 7/16 Hex Key Plumb Bob Tool Allen Wrench, a versatile and essential addition to any mechanic's or DIY enthusiast's toolbox. This tool is expertly designed to provide maximum functionality in various applications, making it an indispensable asset for precision work.

The Proto 388226-3 is a multifunctional tool that combines the functionality of a 7/16 hex key, a plumb bob, and an Allen wrench. The hex key is perfect for securing or loosening bolts and screws with a hexagonal shape. Its 7/16 inch size is a common size used in various industries and applications, ensuring broad compatibility.

The plumb bob feature comes in handy when you need to ensure verticality, particularly in situations where leveling is essential. The tool's weighted end swings freely and can be easily attached to a string or a hook, providing an accurate indication of the vertical direction.

The Allen wrench component of this tool is designed to fit into hexagonal sockets with a 1/4 inch drive. It's an ideal tool for working on bicycles, furniture, and other equipment where Allen bolts are commonly used. Its inclusion in this multi-tool ensures that you have the right tool for the job, reducing the need for carrying multiple tools.

The Proto 388226-3 7/16 Hex Key Plumb Bob Tool Allen Wrench is made of high-quality steel, guaranteeing durability, strength, and resistance to wear and tear. Its chrome-plated finish not only adds to its aesthetic appeal but also protects the tool from rust and corrosion, ensuring a long service life.

This tool's ergonomic design ensures a comfortable grip, reducing user fatigue during prolonged use. Its compact size makes it easy to carry, store, and transport, allowing you to take it with you wherever you go.

In summary, the Proto 388226-3 7/16 Hex Key Plumb Bob Tool Allen Wrench is a high-performance, versatile tool that offers the functionality of a hex key, a plumb bob, and an Allen wrench in one convenient package. Its robust construction, excellent functionality, and compact design make it an essential addition to any toolbox.

Pros and Cons of buying a Proto 388226-3 7/16 Hex Key Plomb Tool Allen Wrench

The Proto 388226-3 7/16 Hex Key Plomb Tool Allen Wrench is a versatile tool used for various applications in industries like automotive, construction, and manufacturing. This tool combines the functionality of a hex key, plumb bob, and Allen wrench in one. Let's examine the pros and cons of investing in this multifunctional tool.

Pros:

1. Versatility: This tool offers three functions in one, which can save time and reduce the need to carry multiple tools for different applications.

2. Precision: The plumb bob feature ensures accurate leveling, which is essential in various industries such as construction and manufacturing.

3. Durability: Proto tools are known for their high-quality construction and durability, making this tool a long-term investment.

4. Convenience: The compact design makes it easy to carry, store, and transport from one job site to another.

5. Value for money: With three functions in one tool, it offers excellent value for money compared to buying separate tools.

Cons:

1. Limited sizes: This tool is available in only one size (7/16), so it may not be suitable for all applications requiring different hex key or Allen wrench sizes.

2. Heavier than single-function tools: Due to its multifunctional design, this tool may be slightly heavier than a single-function hex key or Allen wrench.

3. Possibility of tool interference: Depending on the application, the plumb bob or Allen wrench feature might interfere with accessing certain bolts or nuts.

Conclusion:

The Proto 388226-3 7/16 Hex Key Plomb Tool Allen Wrench is a valuable addition to any toolkit due to its versatility, precision, durability, and convenience. Despite its limited sizes and potential for tool interference, its three-in-one functionality and excellent value for money make it a worthwhile investment for professionals and DIY enthusiasts alike.

Details:

A solid example of early American tool manufacturing with crossover appeal to Proto, Plomb, and military collectors. Tools of this type were commonly supplied for military, aviation maintenance, and industrial service environments, though no specific aircraft application is confirmed. L siting is for ONE 1 individual hex key 1 EA. This is a large-format hex key, significantly heavier-duty than typical consumer examples, with proportions suggesting industrial, maintenance, or contractor use.

Representing an early Proto/Plomb transitional-era industrial tool. Vintage PROTO hex key Allen wrench marked 388226-3, manufactured in the USA by PLOMB Tool Co.

part #: 3882263 price

  • $10.00

specifications allenhexwrenchus:

  • brand: Proto
  • mpn: 388226-3
  • type: L-shaped Hex
  • system of measurement: Standard
  • size: 7/16 In
  • country of origin: United States

payments allenhexwrenchus:

  • other
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  • wallet: Paypal

offer allenhexwrenchus:

  • started: May 12, 2026
  • options: Ship-to-home
  • best offers: True
  • sold: 0
  • availability: In Stock

shipping allenhexwrenchus:

  • transit: 4-8 Days
  • cost: $9.69
  • class: Standard
  • service: USPS Ground Advantage
  • carrier: USPS
  • type: Calculated

general allenhexwrenchus:

  • condition: Used
  • Hand Tools > Wrenches > Hex Keys Hex Wrenches

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seller allenhexwrenchus:

  • rating: 100.0%
  • city: Salisbury, Maryland
  • # reviews: 127
type: l-shaped hex, system of measurement: standard, size: 7/16 in, country of origin: united states,
category: home & garden > hand tools > wrenches > hex keys wrenches, sku: 17343804791305752,
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1 offer $10.00 USD
  • Used. Offer #1 priced at $10.00 + $9.69 shipping estimate = $19.69* total. +$9.69 shipping

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