Nut and Bolt Thread Checker Set, 44 Male and Female Bolt Size Finder Gauges, 23 Standard and 21 Metric, Aluminum Alloy
Nut and Bolt Thread Checker Set, 44 Male and Female Bolt Size Finder Gauges, 23 Standard and 21 Metric, Aluminum Alloy
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Nut and Bolt Thread Checker Set, 44 Male and Female Bolt Size Finder Gauges, 23 Standard and 21 Metric, Aluminum Alloy
Never Guess Bolt Sizes Again! The Ultimate Portable Thread Checker
Looking for a different set size?
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Our Bolt Size Finder: Easy Access in Tight Spaces
Unlike bulky wall-mounted gauges, our 44-piece bolt size finder features fully removable gauges! Perfect for quick thread checks in cramped workshops, under car hoods, or behind plumbing fixtures. Slip it in your pocket and go!
Bolt Size Finder Complete Size Coverage (23 Standard + 21 Metric)
US STANDARD (Silver)
| 1-12 | 1-8 | 3/4-16 | 3/4-10 |
| 5/8-18 | 5/8-11 | 9/16-18 | 9/16-12 |
| 1/2-20 | 1/2-13 | 7/16-20 | 7/16-14 |
| 3/8-24 | 3/8-16 | 5/16-24 | 5/16-18 |
| 1/4-28 | 1/4-20 | 10/32 | 10/24 |
| 8/32 | 6/40 | 6/32 |
METRIC (Black)
| M3-0.5 | M4-0.7 | M5-0.8 | M6-1.0 |
| M7-1.0 | M8-1.0 | M8-1.25 | M10-1.0 |
| M10-1.25 | M10-1.5 | M12-1.25 | M12-1.5 |
| M12-1.75 | M14-1.5 | M14-2.0 | M16-1.5 |
| M16-2.0 | M20-1.5 | M20-2.5 | M24-2.0 |
| M24-3.0 |
US STANDARD (Red)
| 1-12 | 1-8 | 3/4-16 | 3/4-10 |
| 5/8-18 | 5/8-11 | 9/16-18 | 9/16-12 |
| 1/2-20 | 1/2-13 | 7/16-20 | 7/16-14 |
| 3/8-24 | 3/8-16 | 5/16-24 | 5/16-18 |
| 1/4-28 | 1/4-20 | 10/32 | 10/24 |
| 8/32 | 6/40 | 6/32 |
METRIC (Blue)
| M3-0.5 | M4-0.7 | M5-0.8 | M6-1.0 |
| M7-1.0 | M8-1.0 | M8-1.25 | M10-1.0 |
| M10-1.25 | M10-1.5 | M12-1.25 | M12-1.5 |
| M12-1.75 | M14-1.5 | M14-2.0 | M16-1.5 |
| M16-2.0 | M20-1.5 | M20-2.5 | M24-2.0 |
| M24-3.0 |
Built Like a Tank - Lasts for Years
Forged from aerospace-grade aluminum alloy with laser-etched markings that WON'T fade. Survives oil, grease, and job site drops. The hexagonal design provides a perfect grip, even with oily hands.
Our Bolt Size Finder Kit No More Lost Gauges! Smart Storage
Custom-cut foam case keeps every bolt size finder securely nested. Fits in gloveboxes, tool belts, or toolbox drawers. Never waste time hunting for sizes again!
Where Pros Use This Bolt Size Finder
- Automotive Identify stripped bolts during repairs
- Plumbing Match pipe threads in tight crawl spaces
- Woodworking Size threaded inserts for furniture
- HVAC Service units with mixed standard/metric fasteners
- Metalworking Verify threads before machining
"My most reached-for tool!" - Mike K. (Verified Buyer)
Why Choose Our Bolt Size Finder Kit?
44 Gauges in 1 Compact Case
Laser-Etched Precision Markings
Foam Protection Against Damage
SAE + Metric in One Solution
Frequently Asked Questions ( Bolt Size Finder )
Q1: What sizes are included in the Bolt Size Finder?
A1: The Bolt Size Finder includes 23 US standard sizes and 21 metric sizes, covering a wide range of thread sizes for all your automotive, plumbing, woodworking, and metalworking needs.
Q2: Can I use the Bolt Size Finder for both standard and metric bolts?
A2: Yes, our Bolt Size Finder includes both US standard (SAE) and metric gauges, making it perfect for a variety of applications across different industries.
Q3: Is the Bolt Size Finder durable enough for rough job site conditions?
A3: Absolutely! It's made from aerospace-grade aluminum alloy, designed to withstand drops, oil, grease, and rough handling on job sites, ensuring long-lasting performance.
Q4: How do I store the Bolt Size Finder?
A4: The Bolt Size Finder comes with a custom-cut foam case that securely holds all the gauges, keeping them organized and protected. It fits easily into gloveboxes, tool belts, or toolbox drawers for convenient storage.
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