NSL2020K2 20mm H x 20mm W x 125mm OAL x 25mm F LH TopGroove™ NS Toolholder
Fastenal Part No. (SKU)
Manufacturer Part No.
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Product Attributes
ANSI Code NSL2020K2
Cut Depth (in) 0.1382
Cut Depth (mm) 3.510
End Chamfer (in) 0.3465
End Chamfer (mm) 8.800
Gage Insert N.2L
Hand of Tool LEFT
Head Length (in) 0.7480
Head Length (mm) 19.000
ISO Code NSL2020K2
Mount Type Top Notch Clamp
Shank Height (in) 0.7874
Shank Height (mm) 20.000
Shank Width (in) 0.7874
Shank Width (mm) 20.000
System of Measurement Metric
Tool Length (in) 4.9213
Tool Length (mm) 125.000
Type Grooving/Cut-Off Toolholder
Product Weight 0.815
UOM each
The Top Groove & Top Thread system is the most rigid tool on the market. Locking forces in three directions on the insert offer superior resistance to thrust and tangential force. The simplistic design avoids costly set-up errors that can occur with laydown type threading tools. Accepts both threading and grooving inserts. First choice for heavy-duty or high-feed applications. The rigid tool results in better surface finishes. Excellent chip control. Consistent carbide grades provide long tool life. Multiple grooving and threading insert endforms available as standards.
  • Holder shipped with clamp and clamp screw
  • Left hand #2

Best choice for job shop environments. Especially effective for single-point threading of course pitches, Acme, Buttress, and API threads. Best for multi-tooth threading applications. Right-hand holders use right-hand inserts. Left hand holders use left-hand inserts
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