The Lyn-Tron Metric Round Thumb Nut is precision-engineered in the USA to deliver reliable hand-tightening for a variety of applications. Designed with a knurled, easy-grip surface, this nut allows for tool-free installation and removal, making it ideal for equipment panels, enclosures, and assemblies requiring frequent access or adjustment.

Manufactured under the trusted Lyn-Tron brand, this thumb nut features high-quality materials and tight tolerances to ensure strength, durability, and a clean fit on metric-threaded components. Whether used in electronics, industrial machinery, or prototyping, it provides a dependable fastening solution with a professional finish.

As part of OneMonroe’s extensive line of fasteners and precision hardware, the Lyn-Tron Metric Round Thumb Nut reflects our commitment to American-made quality and engineering excellence.

Unit of Measure
Items
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Metric Round Thumb Nut
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Metric Round Thumb Nut
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Metric Round Thumb Nut
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Metric Round Thumb Nut
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Metric Round Thumb Nut
Material N/A Brass
OD N/A 6 mm N/A 8 mm N/A 10 mm N/A 10 mm N/A 13 mm
Head Diameter N/A 6 mm N/A 8 mm N/A 10 mm N/A 10 mm N/A 13 mm
Washer Dia N/A 5 mm N/A 6 mm N/A 9 mm N/A 9 mm N/A 11 mm
Female Thread N/A M2.5x0.45 N/A M3X0.5 N/A M3.5x0.6 N/A M4X0.7 N/A M5X0.8
OAL N/A 6 mm N/A 6 mm N/A 7 mm N/A 7 mm N/A 9 mm
Head Length N/A 3 mm N/A 3 mm N/A 3 mm N/A 3 mm N/A 4 mm
Washer Length N/A 3 mm N/A 3 mm N/A 4 mm N/A 4 mm N/A 5 mm
Part Description N/A M2.5X0.45 Female Thread, Brass Metric Round Thumb Nut N/A M3X0.5 Female Thread, Brass Metric Round Thumb Nut N/A M3.5X0.6 Female Thread, Brass Metric Round Thumb Nut N/A M4X0.7 Female Thread, Brass Metric Round Thumb Nut N/A M5X0.8 Female Thread, Brass Metric Round Thumb Nut