Top 8 Thread Checker Metric – Structural Bolts

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1. S&W Manufacturing

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Nut & Bolt Thread Checker Metric

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S&W Manufacturing #ad - Thread sizes are permanently stamped on each gauge. Metric gauges are black oxide. Accurate and easy-to-use thread verifier for both nuts and bolts. Each included size has a nut and bolt checker on the same gauge. Wire cable with loop for convenient hanging.
BrandS&W Manufacturing #ad
ManufacturerS&W #ad
Height1.38 Inches
Length36.38 Inches
Weight0.75 Pounds
Width1.06 Inches
Part NumberSWTC-M21
ModelSWTC-M21

2. CKE

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14 Inch & 12 Metric, 26 Male/Female Gauges, CKE Nut & Bolt Thread Checker Inch & Metric

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CKE #ad - Black oxide for metric size - includes 12 metric sizes part numbers: m4x07, m12x1. 5, m8x1. 25, m10x1. 0, m6x1. 0, m8x1. 0, m7x1. 0, m5x08, m10x1. 25, m12x1. 25, m10x1. 5, m12x1. 75. The individual gauges rotate freely on the wire cable for fast thread verification.

The thread checker is especially well suited for distinguishing between similar inch and metric threads. Each individual gauge features a male threaded stud on one end and a female threaded hole on the other. Feature - the inch & metric thread checker is an accurate and easy-to-use thread identifier for both nuts and bolts. Zinc plated for inch size - includes 14 inch size part numbers: 6-32, 1/4-28, 10-32, 1/4-20, 8-32, 10-24, 7/16-14, 3/8-16, 7/16-20, 5/16-24, 1/2-13, 3/8-24, 5/16-18, 1/2-20.

Fast size finder - thread sizes are permanently stamped onto each gauge. Conveniently assembled onto a wire loop, it's the perfect portable solution! Upgrade to double-sided printing size! Nut & bolt thread checker - each size has a nut and bolt checker on the same gauge 26 male/female gauges - 14 inch & 12 metric.
BrandCKE #ad
ManufacturerCKE #ad

3. Thread Checker

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Nut and Bolt Thread Checker Complete SAE/Inch and Metric Set Packs

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Thread Checker #ad - Each included size has a nut and bolt checker on the same gauge. Thread sizes are permanently stamped on each gauge. 23 of the most common saE and 21 of the most common metric sizes, see description.
BrandThread Checker #ad
ManufacturerThread Checker #ad
Part NumberSWTC-M21
ModelSWTC-M21

4. Thread Checker

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Nut & Bolt Thread Checker Inch & Metric, Original Version SWTC-26

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Thread Checker #ad - Thread sizes are permanently Stamped Onto Each Gauge Inch In Red, Metric In White. The individual gauges rotate Freely On The Wire Cable For Fast Thread Verification. Inch gauges are clear zinc Plated, Metric Gauges Are Black Oxide. 26 male/female gauges - 14 Inch & 12 Metric. Each size has a nut and bolt checker on the same Gauge.
BrandThread Checker #ad
ManufacturerThread Checker #ad
Height1 inches
Length6 inches
Weight0.31 Pounds
Width4 inches
Part NumberNA
ModelSWTC-26

5. tenluno

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23 Inch & 21 Metric Sizes, tenluno Thread Checker Nut & Bolt SWTC-44 Bundle Thread Checker Nut and Bolt Checker 44 MaleFemale Thread Identifier Gauges

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tenluno #ad - 23 inch sizes part number : 6-32, 3/4-10, 1/4-20, 3/8-16, 5/8-18, 7/16-14, 7/16-20, 1/2-20, 3/4-16, 9/16-12, 5/16-18, 10-32, 1-8, 5/16-24, 8-32, 1/4-28, 6-40, 10-24, 1/2-13, 9/16-18, 3/8-24, 5/8-11, 1-12. Easy to easy to carry, a good toolcarry, easy to measure, easy to measure, a good tool.21 metric sizes part number : m3x05, m14x1. 5, m20x2. 5, m16x2. 0, m8x1. 25, m5x08, m12x1. 25, m10x1. 5, m16x1. 5, m6x1. 0, m12x1. 75, m12x1. 5, m14x2. 0, m20x1. 5, m8x1. 0, m10x1. 0, m10x1. 25, m24x2. 0, m7x1. 0, m4x07, m24x3. 0
Brandtenluno #ad
Manufacturertenluno #ad
Part Number0128

6. Screw Chek'r

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Made In USA, Screw Chek'r Metric Screw Thread Size Gauge No. 2 8MM to 14MM 1/8 Inch Heavy Gauge Steel Screw Checker, 02130, chrome

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Screw Chek'r #ad - Package weight: 0227 kg. Product Type: Tools. Package Quantity: 1. Country of Origin: United States.
BrandScrew Chek'r #ad
ManufacturerRuelle #ad
Height0.08 Inches
Length4 Inches
Weight0.5 Pounds
Width5 Inches
Part Number02130
Model02130

7. Screw Chek'r

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Made In USA, Screw Chek'r SAE/Inch Screw Checker No. 4 to 1/2 1/8 Inch Heavy Gauge Steel Screw Checker

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Screw Chek'r #ad - Proudly made in the U. S. A. This tool gives all the information needed to properly identify machine screws, pocket sized tool. Comes with a Protective Plastic Carrying Case.

Do it yourselfers, wood screws, sheet metal screws, bolts, handymen, and even cotter pins and rivets. Identifies diameter, pitch, size, and length, with a tap drill chart for sizes ranging from No. Say goodbye to frustration with this easy to use, and mechanics can save time and money by accurately identifying different types of screws the first time. Made from high quality 1/8 inch Heavy Gauge Satin Chrome Plated Steel. This tool can also be used to straighten bent screws and clean dirty or rusty threads. 4 through 1/2 inch in the UNC and UNF pitches.
BrandScrew Chek'r #ad
ManufacturerRuelle #ad
Weight0.9 Pounds
Part Number2140
Model02140

8. Thread Detective

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Jumbo Size, Metric and SAE/Inch Combination Set, Thread Detective Thread Identifier

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Thread Detective #ad - Inch thread identifiers contain nut and bolt sizes of: 5/8-11, 3/4-10, 3/4-16, 1-8, 5/8-18, 1-12. Metric thread identifiers contain nut and bolt sizes of m4x1. 5, m16x2. 0, m20x2. 5, m16x1. 5, m14x2. 0, m20x1. 5, m24x2. 0 and m24x3. 0 .
BrandThread Detective #ad
ManufacturerInnovative Components #ad
Height13.02 Inches
Length10 Inches
Weight1.99 Pounds
Width1.55 Inches
Part NumberSPPPOA017730