Hex locknuts M4 1pc

Inside Diameter x Outside Diameter x Thickness(3mm x 7mm x 3mm)

DASQUA High Precision 6 Inch/150mm Electronic Micrometer Digital Caliper With Large LCD Screen & Easy Inch And Millimeter Conversion.
Surfaces of beam ground (Parallelism less than 0.015, 20% better than normal) to ensure smooth movement throughout
With fractional function. Special glass grating adapted. Silky smooth movement through.
Larger size digital screen for easy reading ( Digit Size: 11.5mm )
Measuring Range:  0~150 mm / 0~6’’- Accuracy:  ±0.02 mm / 0.001’’
Resolution/Reading: 0.01 mm / 0.0005’’ / 1/128’’. Hardened stainless steel body for long life.
Absolute function. Strictly made in accordance with DIN862
IP54 protection against water, oil, dust or any other liquid.