Series 331 Spline Micrometer

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Series 331 Spline Micrometer

Series 331 Spline Micrometer

Series 331 Spline Micrometer

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Specification: 406-250-30

Features & Benefits

The digital Mitutoyo spline micrometer is ideal for measuring minor indents, slots, spline shafts and keyways on workpieces. The anvil and spindle each have reduced diameters to better measure internal features with high accuracy. A ratchet-stop mechanism provides uniform pressure on a workpiece for precise, repeatable measurements. Measurements are displayed on a coolant-proof, easy-to-read LCD display.

  • Available in Metric and Inch/Metric Models
  • IP65 protection permits use in environments exposed to cutting oil, coolant, dust, etc., for use on most shop floor environments
  • Ratchet mechanism provides an audible click to ensure measurement is being performed at a constant pre-set force
  • SPC output function allows for quick and easy data management in real time
  • Functions include Origin Set, Zero Setting, Data Hold, Function Lock, Data Output, and inch/mm conversion (on inch/metric models only)
  • Alarm: Low Voltage, Counting Value Composition Error
  • Carbide facing on the spindle and anvil resists wear to keep surfaces flatter with longer accuracy
  • Scale is laser etched on thimble for easier reading
  • Frame has a non-slip finish for better grip in shop environments
  • Includes a standard bar except for 0-25mm models
  • Supplied in fitted plastic case

SERIES 331 Technical Data

Technology: Digimatic
IP Rating: IP65
SPC Output:
Yes
Ratchet/Thimble: Ratchet Stop
Measuring Force: 5-10N
Measuring Faces: Carbide tipped 
Display: LCD
Battery:

SR44 (1 pc.) 938882

(Customer is required to provide their own batteries.)

Battery Life: Approx. 2.4 years under normal use
Optional Accessories: 05CZA662, 05CZA663


Product List

Order No.: Units: Range: Resolution: Accuracy: Mass: Graduation: Flatness: Parallelism: Remarks:
331-251-30 Metric 0-25mm 0.001mm ±2µm 330g 0.01mm 0.3µm 2µm or less Type A
331-252-30 Metric 25-50mm 0.001mm ±2µm 470g 0.01mm 0.3µm 2µm or less Type A
331-253-30 Metric 50-75mm 0.001mm ±2µm 625g 0.01mm 0.3µm 2µm or less Type A
331-254-30 Metric 75-100mm 0.001mm ±3µm 565g 0.01mm 0.3µm 3µm or less Type A
331-261-30 Metric 0-25mm 0.001mm ±2µm 330g 0.01mm 0.3µm 2µm or less Type B
331-262-30 Metric 25-50mm 0.001mm ±2µm 470g 0.01mm 0.3µm 2µm or less Type B
331-263-30 Metric 50-75mm 0.001mm ±2µm 625g 0.01mm 0.3µm 2µm or less Type B
331-264-30 Metric 75-100mm 0.001mm ±3µm 565g 0.01mm 0.3µm 3µm or less Type B
331-351-30 Metric, Inch 0-1" / 0-25.4mm 0.00005" / 0.001mm ±.0001" / ±2µm 330g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type A
331-352-30 Metric, Inch 1-2" / 25.4-50.8mm 0.00005" / 0.001mm ±.0001" / ±2µm 470g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type A
331-353-30 Metric, Inch 2-3" / 50.8-76.2mm 0.00005" / 0.001mm ±.0001" / ±2µm 625g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type A
331-354-30 Metric, Inch 3-4" / 76.2-101.6mm 0.00005" / 0.001mm ±.00015" / ±3µm 565g 0.01mm / 0.0001" 0.3µm 0.00012" or less / 3µm or less Type A
331-361-30 Metric, Inch 0-1" / 0-25.4mm 0.00005" / 0.001mm ±.0001" / ±2µm 330g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type B
331-362-30 Metric, Inch 1-2" / 25.4-50.8mm 0.00005" / 0.001mm ±.0001" / ±2µm 470g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type B
331-363-30 Metric, Inch 2-3" / 50.8-76.2mm 0.00005" / 0.001mm ±.0001" / ±2µm 625g 0.01mm / 0.0001" 0.3µm 0.00008" or less / 2µm or less Type B
331-364-30 Metric, Inch 3-4" / 76.2-101.6mm 0.00005" / 0.001mm ±.00015" / ±3µm 565g 0.01mm / 0.0001 0.3µm 0.00012" or less / 3µm or less Type B

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.