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Pricing Update as of September 24, 2026

Our raw material costs have risen by more than 50% in 2026. As a small manufacturer, we can no longer absorb rising material costs. Prices will increase January 1, 2027. We encourage early orders.

Wescon 690 Microstop - 7/16‑20 - 1‑1/4" Cutter Capacity - Slotted Skirt External Steel Foot

LARGE CAPACITY UNITS
(Discontinued)
Part Number
WES690-1250-SES-4320-TF
Measurement Type
Imperial
Bearing Rating
3,000 rpm
Bearing Type
Bronze Bearing
Heavy Duty Thrust Bearing
Yes
Incremental Adjustment
0.0005 in
Shaft Travel
1/2 in
Dust Seal
No
Cutter Thread
7/16-20
Shaft
Tri-Flat
Shaft Diameter
3/8 in
Cutter Capacity
1-1/4 in
Skirt
Slotted External Thread
Foot
Steel
Solid Stop
No
Material
Steel
Country of Origin
USA
* The image represents the general look of the series. Actual product may vary based on options selected.
This series has been discontinued

The WES690 series has been replaced by the WES696 series. The equivalent part number is WES696-1250-SES-4320-TF.

View Replacement Product

MADE FROM

American Steel

Made in USA

Every product we sell is built by us in the USA using American or DFARS materials. We never outsource, standing firmly by the quality of every tool we ship.

We believe in fair pricing driven by efficiency. While we are not the lowest-priced option on the market, our streamlined manufacturing ensures we aren't the most expensive, either.

We simply offer the highest quality tool for your dollar, and our customer service and shipping times are unmatched.

Product details

The Wescon 690 Series Microstop is a large capacity microstop countersink cage for larger diameter cutters at lower spindle speeds. A bronze bearing rated to 3,000 rpm with a heavy duty thrust bearing carries the 3/8 in (9.525 mm) tri-flat shaft, with 1/2 in (12.70 mm) of shaft travel and 0.0005 in (0.013 mm) incremental adjustment. Cutter capacities run from 7/8 in to 2 in with 3/8-24, 7/16-20, M8x1 or M10x1 cutter threads. Skirts are available in straight, slotted, cutaway, 2-leg, 3-leg and external thread styles with nylon or steel feet.

Downloads

Download Datasheet PDF

Also referred to as

  • 690-1250-SES-4320-TF
  • Micro-stop 690-1250-SES-4320-TF
  • Regulador Micrometrico 690-1250-SES-4320-TF
  • Butee Micrometrique
  • Micro-Stops de avellanado
  • Gabbietta Micrometrica
  • Countersink cage 690-1250-SES-4320-TF
  • Micro stop drill cage 690-1250-SES-4320-TF
  • WES690-1250-SES-4320
  • 690-1250-SES-4320-TF
  • Large
  • Jumbo

Switching from another manufacturer?

We’re here to help.

Our cross reference tool is the easiest way to find an equivalent or alternate part. If it’s not on our list, we’ll still be able to help you switch, perhaps even design a custom tool to your specification. Send us an email or give us call!

SAME DAY SHIPPING

Don't let delayed shipments hold up your assembly line.

We frequently restock our most popular items. Most of our standard microstops are in stock. All our online orders are fulfilled out of Houston, Texas facility and ships same day on in-stock orders placed before 12 PM CST.

Order online