A workshop measuring tool, DOYFAY Thread Checker, designed for quick, reliable identification of nut and bolt thread sizes. Confident repairs and organised hardware bins reduce wasted trips and mismatched fasteners. Will the accuracy and durability suit a busy garage or professional bench?
⚡ At a Glance
- • Thread Coverage: Includes a wide set of metric and imperial thread sizes, listed for direct matching
- • Best for: Repairsmen, engineers and DIY enthusiasts who need fast, reliable size identification
- • Not ideal for: Users who need digital readouts or micrometre-level measurement accuracy
An anodised 6061 aluminium board carries laser-printed graduations and SUS304 support pillars for robust use. Pre-drilled mounting holes and non-slip feet make the gauge easy to access and keep organised.
Fast, accurate matching, with 34 metric and imperial thread sizes
Metric sizes range from 4 mm x 0.7 up to 14 mm x 2.0, and imperial sizes cover 6-32 coarse through 1/2-20 fine, each size labelled for quick slot matching. Clearly marked slots allow direct trial of nuts and bolts rather than needing calipers.
Spend less time guessing sizes at the bench, and match hardware on the first try to avoid incorrect purchases and wasted effort.
Workshop-grade longevity, with 6061 aluminium and SUS304 supports
Main board made from 6061 aluminium with an anodised finish, supported by SUS304 pillars and a solid 5 mm thick back plate for rigidity. Laser-printed graduations use a high-contrast black-on-white scheme to maintain legibility.
Durable all-metal construction withstands knocks and repeated use, keeping the measurement reference reliable for years rather than months.
Accessible storage and placement, with mounting holes and non-slip feet
Two pre-drilled holes allow wall mounting, while four non-slip support feet enable stable placement on benches or inside toolboxes. The flat, board-style format suits both wall-mounted organisation and portable bench use.
Keep common sizes within easy reach and avoid rummaging through mixed hardware, speeding up routine repairs and parts sorting.
✨ The 4 Key Reasons for DOYFAY Thread Checker
- Laser-printed graduations - High contrast markings make size reading fast and reliable
- All-metal construction - Robust materials withstand workshop knocks and repeated use
- Wall-mountable layout - Pre-drilled holes allow permanent placement for quick access
- Compact ruler board - Saves bench space while organising a wide spread of fasteners
📋 Technical Details at a Glance
- Category: Thread checker, nut and bolt gauge
- Size Coverage: 34 nut and bolt thread sizes, metric and imperial
- Metric threads: 4 mm x 0.7; 5 mm x 0.8; 6 mm x 1.0; 7 mm x 1.0; 8 mm x 1.0; 8 mm x 1.25; 10 mm x 1.0; 10 mm x 1.25; 10 mm x 1.5; 12 mm x 1.25; 12 mm x 1.5; 12 mm x 1.75; 14 mm x 1.5; 14 mm x 2.0
- Imperial threads: 6-32 COARSE; 8-32 COARSE; 10-24 COARSE; 10-32 FINE; 1/4-20 COARSE; 1/4-28 FINE; 5/16-18 COARSE; 5/16-24 FINE; 3/8-16 COARSE; 3/8-24 FINE; 7/16-14 COARSE; 7/16-20 FINE; 1/2-13 COARSE; 1/2-20 FINE
- Material: 6061 aluminium with anodised surface
❓ Frequently Asked Questions
Q: What thread sizes are covered?
A: Metric sizes include 4 mm x 0.7 through 14 mm x 2.0, and imperial sizes run from 6-32 coarse up to 1/2-20 fine, with each slot labelled for matching nuts and bolts.
Q: Is the build sturdy enough for a busy workshop?
A: 6061 aluminium with an anodised surface, SUS304 support pillars and a 5 mm thick back plate create an all-metal construction noted by users for durability.
Q: Can the gauge be mounted or stored on a bench?
A: Two pre-drilled holes allow wall mounting, while four non-slip support feet enable stable placement on benches or inside toolboxes.
🏆 Our Verdict
Ideal for tradespeople and hobbyists who need fast, reliable matching of metric and imperial fasteners. Anodised aluminium construction, SUS304 supports and laser-printed graduations make accuracy and durability the main selling points. Long-term value comes from reduced mistakes and a better organised workshop, keeping hardware matched and ready for use.
