Skip Content

Please Upgrade Your Browser Grainger will no longer support Internet Explorer 8 as of 07/2018. Please upgrade your browser or contact your System Administrator for support.


Internal Threading Insert, SR, 21-Top Rake, MT7

  • Item # 4LGX9
  • My Part #
  • Mfr. Model # 21 I 18 UN MT7
  • Catalog Page # N/A
  • UNSPSC # 23171618
Internal Threading Insert, SR, 21-Top Rake, MT7 close

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.

CAD Downloads

Web Price $93.00 / each

Shipping: pkg of 5

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Please sign in or register to access Quote

Want to Get Free Shipping?

  • Shipping Weight 0.03 lbs.
Country of Origin Israel Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

This mill thread insert is designed to produce both right- and left-hand threads. It features M17 carbide grade construction and a TiAIN multilayer coating.

View More

Technical Specs

  • Item Threading Insert
  • Thread Type Internal
  • Style SR
  • Insert Size 21
  • Pitch 18 TPI
  • Thread Profile UN
  • Chip-Breaker Top Rake
  • Grade MT7
  • Cutting Direction Right Hand
  • Workpiece Compatibility Cast Iron (K),Hardened (H),Nonferrous (N),Stainless (M),Steel (P),Super Alloy (S)
  • ANSI Number 21 I 18 UN MT7
  • Insert Type General Purpose
  • Insert Material Carbide
  • No. of Edges 2
  • Coating TiAlN
  • Mounting Style Screw
  • Rake Positive
  • ISO Number 21 I 18 UN MT7
  • Steel (P) Compatibility Yes
  • Insert Shape Rectangle
  • Stainless (M) Compatibility Yes
  • Cast Iron (K) Compatibility Yes
  • For Use With Toolholder SR079H21
  • Non Ferrous (N) Compatibility Yes
  • Super Alloy (S) Compatibility Yes
  • Hardened (H) Compatibility Yes
How can we improve our Technical Specifications?

Compliance and Restrictions

  • This item is restricted for international sale.

Alternate Products

Alternate Products may not be identical in style or function to original selection. Please compare below for more information.

Customer Reviews

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.