🔩 50% OFF! 🔥Nut & Bolt Thread Checker Kit – Quick Inspection for Fixed Bolts & Threaded Holes
🔩 50% OFF! 🔥Nut & Bolt Thread Checker Kit – Quick Inspection for Fixed Bolts & Threaded Holes
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Identify Metric & Imperial Threads With Less Guesswork
A compact thread-checking system designed to help identify bolt, nut and threaded-hole sizes for workshop, automotive, maintenance and DIY applications.
Check Thread Size Faster & Match Fasteners More Confidently
Match Unknown Fasteners More Easily
Clearly marked gauge sizes help identify thread diameter and pitch when checking replacement bolts, nuts, threaded holes and other compatible fasteners. The etched markings are designed for quick visual reference during repeated workshop use.
Check Bolts, Nuts & Threaded Holes
Male and female gauge elements allow the set to be used for checking both external bolt threads and compatible internal threads in nuts or threaded openings, reducing the need for separate identification tools.
Choose A Set For Common Workshop Fasteners
Available in 26-piece and 44-piece configurations, with set options covering a selection of commonly used metric and imperial thread sizes for automotive, equipment, household and workshop tasks.
Made For Regular Toolbox & Workshop Use
The set uses aluminum, steel and plastic components depending on the selected model, providing a practical balance of durability, structure and organized storage for repeated identification work.
Quick Size Reference While You Work
Clearly displayed size labels help speed up identification, while the compact arrangement keeps multiple thread gauges organized and accessible at the workbench, garage or jobsite.
Useful For Fastener Identification Across Multiple Jobs
Automotive
Identify common nuts and bolts during repairs.
Machinery
Check replacement fastener sizing.
Home Repair
Match unknown household fasteners.
Workshop
Keep thread sizes easier to identify.
Parts Sorting
Organize loose fasteners by thread size.
DIY Projects
Reduce trial-and-error when replacing hardware.
Find The Correct Fit Without Forcing It
1. Clean The Thread
Remove dirt, oil buildup, rust flakes or debris that could interfere with the fit.
2. Choose A Likely Gauge
Start with a gauge that appears close to the fastener's approximate diameter and thread spacing.
3. Thread It Gently
Engage the fastener by hand. A correct match should turn smoothly without excessive force or binding.
4. Read The Marked Size
Once a smooth fit is confirmed, use the marked gauge size as the thread identification reference.
Specifications
Choose The Configuration That Fits Your Toolbox
Blue-Red 44-Piece Set – Perforated
Silver-Black 26-Piece Set
Blue-Red 26-Piece Set
Blue-Red 44-Piece Set
Silver-Black 44-Piece Set
- Clean the fastener threads before testing to improve fit and identification accuracy.
- Do not force a bolt, nut or threaded hole onto a gauge. Resistance can indicate an incorrect diameter, pitch or thread standard.
- Begin threading by hand and stop immediately if the parts bind or cross-thread.
- This tool is intended for thread identification and is not designed to determine thread wear, deformation or structural damage.
- Thread coverage varies by selected 26-piece or 44-piece set. Confirm the included sizes before ordering if a specific thread is required.
- Wipe oil, grease and moisture from the gauges after use.
- Store the set in its case in a dry environment to help reduce corrosion and keep sizes organized.
- Actual colors and component arrangement may vary slightly by selected model and display settings.
Beware of Counterfeit & Imitation Products
Please purchase only from the official Alaskatag @ store.
Unauthorized sellers may use similar product images or descriptions while supplying products that differ in thread-size coverage, gauge materials, markings, component count, storage case, finish, packaging or after-sales support.
OUR GUARANTEE
OUR GUARANTEE

✈️ Insured Fast Shipping: Each order includes real-time tracking details and insurance coverage in the unlikely event that a package gets lost or stolen in transit.
👍 Money-Back Guarantee: If your items arrive damaged or become defective within 30 days of normal usage, we will gladly issue a replacement or refund.
📞 24/7 Customer Support: We have a team of live reps ready to help and answer any questions you have within a 24-hour time frame, 7 days a week.
🔒 Safe & Secure Checkouts: We use state-of-the-art SSL Secure encryption to keep your personal and financial information 100% protected.