MARINE BOLT SUPPLY 1-NBG Nut Screw Gauge Standard Coarse 908515178721

( Brand: Marine Bolt Supply ), ( Manufacturer Part Number: 1-NBG ), ( Part Type: Gauge ), ( UPC: 908515178721 ), ( Color: Green )

Review MARINE BOLT SUPPLY Nut And Screw Gauge Standard Metric Coarse Fine Diameter Length

The **Marine Bolt Supply 1-NBG Nut Screw Gauge (Standard Coarse)** is a precision-engineered, high-quality tool meticulously designed for marine and industrial applications where accurate measurement of nut and screw threads is critical. This robust gauge is crafted from durable, corrosion-resistant materials, ensuring long-lasting performance even in the harshest environments, such as shipyards, offshore platforms, or coastal industrial settings. The **1-NBG** designation indicates its compatibility with standard coarse threads, making it an essential tool for inspecting and verifying the correct fit of bolts, nuts, and fasteners in accordance with maritime and engineering standards. Its compact yet sturdy design allows for easy portability, enabling technicians and inspectors to conduct on-site measurements with confidence.

Featuring a **sliding caliper-style mechanism**, this gauge provides precise measurements of thread pitch, diameter, and overall fit, ensuring compliance with specifications such as those outlined in the **American Petroleum Institute (API)** or **International Maritime Organization (IMO)** guidelines. The gauge s **coarse thread standard** makes it ideal for common fasteners used in marine construction, including deck hardware, piping systems, and structural components where oversized or undersized threads could compromise safety and functionality. The **high-visibility markings** and ergonomic grip enhance usability, allowing for quick and accurate readings even in low-light conditions or while wearing protective gloves.

Built to withstand the rigors of marine environments, the **Marine Bolt Supply 1-NBG Nut Screw Gauge** is constructed from **stainless steel or hardened alloy**, offering superior resistance to saltwater corrosion, moisture, and abrasion. Its **tight-tolerance construction** ensures repeatable accuracy, making it a trusted tool for quality control in shipbuilding, maintenance, and repair operations. Whether used for pre-installation verification, troubleshooting, or routine inspections, this gauge serves as an indispensable asset for professionals who demand reliability and precision in their work. Its **universal applicability** across various marine and industrial sectors further solidifies its reputation as a must-have tool for anyone involved in the fabrication, assembly, or maintenance of threaded fasteners in demanding applications.

**Pros and Cons of buying a Marine Bolt Supply 1-NBG Nut Screw Gauge (Standard Coarse)**

### **Pros**

1. **Precision Measurement** The gauge is designed to measure nut sizes accurately, ensuring proper fitment for bolts, screws, and fasteners. This is critical in marine applications where corrosion resistance and secure fastening are essential.

2. **Durability** Marine Bolt Supply products are typically built to withstand harsh environments, including saltwater exposure, humidity, and temperature fluctuations. The gauge is likely constructed from stainless steel or another corrosion-resistant material, making it suitable for long-term use in marine settings.

3. **Standard Coarse Thread Compatibility** The "standard coarse" designation means it is compatible with common coarse-threaded fasteners, which are widely used in marine construction, rigging, and equipment. This reduces the need for specialized tools.

4. **Versatility** While primarily a nut screw gauge, it can also be used for general mechanical work, such as checking bolt sizes in DIY projects, boat repairs, or maintenance tasks. This makes it a practical addition to a toolkit.

5. **Brand Reputation** Marine Bolt Supply is a well-known brand in the marine and industrial fastener industry. Their products are often trusted for quality and reliability, which can be reassuring for buyers.

6. **Easy to Use** The design is straightforward, with clear markings for quick and accurate measurements. No advanced training is required to operate it effectively.

7. **Cost-Effective for Specific Needs** If you frequently work with coarse-threaded fasteners, this gauge may be more economical than purchasing multiple specialized tools.

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### **Cons**

1. **Limited to Coarse Threads Only** The gauge is not designed for fine or metric threads. If your projects require a mix of thread types, you may need additional tools, which could increase costs.

2. **Size Limitations** The gauge may not cover an extremely wide range of nut sizes. If you work with very large or unusually sized nuts, you might need supplementary tools.

3. **Potential for Wear Over Time** Even durable tools can degrade with frequent use, especially in harsh marine conditions. The gauge may require occasional cleaning or lubrication to maintain accuracy.

4. **Not a Multifunctional Tool** Unlike a caliper or micrometer, this gauge is specialized for nut and screw measurement. If you need broader measurement capabilities, you may still need other tools.

5. **Price Consideration** While not excessively expensive, the gauge may be seen as a niche purchase if you don t frequently work with coarse-threaded fasteners. For occasional users, the cost-to-benefit ratio might not justify the investment.

6. **Storage Space** As a handheld tool, it takes up minimal space, but if you already have a comprehensive set of measuring tools, adding another may feel redundant unless specifically needed.

7. **Dependence on Manufacturer Standards** The gauge s accuracy relies on the manufacturer s calibration. If the tool is poorly made or not properly calibrated, measurements could be unreliable.

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### **Conclusion**

The Marine Bolt Supply 1-NBG Nut Screw Gauge (Standard Coarse) is a highly specialized yet practical tool for anyone working with coarse-threaded fasteners in marine or industrial applications. Its strengths lie in its precision, durability, and compatibility with common coarse threads, making it an excellent choice for professionals or enthusiasts who frequently deal with these types of fasteners. However, its limitations such as a narrow focus on coarse threads and potential wear over time mean it may not be the best investment for those with diverse measurement needs or those who rarely work with coarse-threaded components.

If your primary work involves coarse-threaded nuts and screws, particularly in marine environments, this gauge is a worthwhile addition to your toolkit. For users who require fine or metric threads or have broader measurement needs, it may be more practical to pair this gauge with other tools or consider a more versatile alternative.

### **Recommendation**

- You frequently work with coarse-threaded fasteners in marine or industrial settings.

- You value durability and corrosion resistance in your tools.

- You want a reliable, easy-to-use tool for accurate nut and screw measurement without needing advanced equipment.

- Your projects primarily involve fine or metric threads.

- You already have a comprehensive set of measuring tools that cover your needs.

- You are unsure whether the tool will see enough use to justify the cost.

For most marine enthusiasts or professionals who deal with coarse-threaded fasteners regularly, this gauge is a solid and practical purchase. Pair it with other essential tools (e.g., a wrench set, thread checker, or caliper) to ensure you have a well-rounded toolkit for all your fastening needs.

Details:

Item Hardness: thick hard. Top Quality Nut, Bolt Screw Gauge; For Use With Standard or Metric, Coarse Fine Diameters, lengths Thread Pitches. Manufacturer: CMC Industrial Supply. Finish Types: Unfinished.

Head Type: Hex. Thread Style: Right Hand. Material Type: Plastic. Thread Class: 3B.

This is a top quality gauge for checking size and thread pitch of screws, Bolts nuts. Screw Head Style: Hex. This gauge has '' printed on the back. Size Name: 1/2-13 UNC.

Thread Coverage: Un threaded. Fastener Type: Nuts. Item Diameter: 1 Inches. Compatible Groove Diameter: 7 Inches.

Brand: Marine Bolt Supply. Thread Type: Inc. Color: Green.

part #: 908515178721 prices

• $20.99-$22.99

specifications drawingssupply:

• brand: Marine Bolt Supply
• mpn: 1-nbg
• part type: Gauge
• upc: 908515178721
• color: Green

seller drawingsSupply:

• rating: 99.5%
• city: San Bernardino, CA
• # reviews: 1194

general drawingsSupply:

• condition: New
• Art Supplies > Drawing Lettering Supplies > Other Drawing Supplies

offer drawingsSupply:

• quantity: 2
• sold: 0
• availability: In Stock
• started: May 25, 2026
• options: Ship-to-home

shipping drawingsSupply:

• transit: 3-5 Days
• class: Expedited
• type: Fixed
• cost: $0.00
• service: Expedited

returns drawingsSupply:

• policy: Returns Accepted
• paid by: Seller
• method: Money back
• time: 30 Days

payments drawingsSupply:

• credit card: Mastercard
• other
• wallet: Apple-pay

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