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3/8" 4FL FUSION Advanced Performance Variable Helix Carbide End Mill, Bright Stub Length, .625"LOC, .020"RAD-Monster Tool/GWS

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3/8" 4FL FUSION Advanced Performance Variable Helix Carbide End Mill, Bright Stub Length, .625"LOC, .020"RAD-Monster Tool/GWS 3/8" 4FL FUSION Advanced Performance Variable Helix Carbide End Mill, Bright Stub Length, .625"LOC, .020"RAD-Monster Tool/GWS 3/8" 4FL FUSION Advanced Performance Variable Helix Carbide End Mill, Bright Stub Length, .625"LOC, .020"RAD-Monster Tool/GWS
GWS TOOL GROUP
284000557
284-000557
284-000557
3/8"0.3750"09.52MM
UPC: 888226270786
Weight: 0.1 LBS
Brand: GWS TOOL GROUP
$72.36
(32% off)
$48.94
each
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Technical Details & Downloads
Technical/Extra Information Catalog Page
Product Description

3/8" 4Fl Fusion Advanced Performance Variable Helix Carbide End Mill, Bright Stub Length, .625"Loc, .020"Rad .625"Loc,3/8"Shank,2-1/2"Oal The Fusion Advanced Performance Carbide End Mills Fuse Advanced High Performance Technology With Classic General Purpose Affordability. The Variable Helix Design With Offset Flute Spacing Supports The Best In Harmonics And Chip Evacuation. The Corner Radius Design, For Added Edge Strength And Wear Protection With Dual Edge Preparation, Edge Honing And Post-Coating Polish, Make For An Outstanding Performer In Steels, Stainless Steels, Hardened Materials, Cast Iron And High Temp Superalloys. Made From Premium C-2 Grade, Sub-Micron Grain Carbide With 10% Cobalt Content. Available With Sharp Corners For Perfect 90° Shoulders Or With Various Corner Radii. Choose Alticrn Coated Tools For Superior Lubricity And Extended Tool Life. Made In The Usa. Gws/Monster Tool Part #284-000557

  • Sub-micron grade carbide substrate for wear resistance.
  • Variable helix, unequal index design for vibration mitigation.
  • Dual edge-prep technology.
  • Excellent cost-to-performance value.
  • Diameter Tol.: +0/-0.002".
  • Shank Tol.: +0/-0.0004".

This item is part of our complete offering of GWS Tool Group Cutting Tools, a USA manufacturer known for high-performance CNC machining solutions, custom-engineered tooling, and advanced coating technologies. Explore GWS End Mills and Milling Products for high-performance carbide milling, GWS Hole Making Tools for drilling and finishing applications, GWS Threading and Gaging Tools for taps, thread mills, dies, and gages, GWS Blanks, Rods and Strips Solid Carbide for carbide stock solutions, and GWS Armory Tools for specialty firearm component machining applications. GWS Tool Group brings together respected legacy brands including Monster Tool, Balax Taps, and Benchmark HP Carbide End Mills, combining their strengths into a powerful portfolio of milling, holemaking, threading, and specialty cutting tools manufactured in the USA. Visit our full GWS Tool Group Cutting Tools page to explore the complete product range, compare tool geometries, coatings, and performance options, and find the right solution for your application.

Made in U.S.A.
Shipping & Delivery Options
Vista, CA
  • UPS

Suncoast Shipping Deals

Min. order amount Shipping Option Special Rate Max Weight
$50.00 UPS Blue 2 Business Days $14.99 8 LBS
$50.00 UPS Red by 10:30am 1 Business Day $29.99 8 LBS
Note: Special vendor shipping deals are destination-based and may not be available in all ZIP codes. If this rate is not available for your shipping address, standard shipping options will be shown at checkout.
$98.00 MINIMUM ORDER
If ordered by 1:30pm Eastern Standard Time GWS will Ship Same Business Day
Factory Stock
149
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Additional Product Details

Technical Details

Manufacturer
GWS TOOL GROUP
Manufacturer Part Number
284-000557
Tool Diameter
0.3750" 3/8"
Length Of Cut
0.625"
Overall Length
2.500"
Shank Diameter
0.3750" 3/8"
Radius Size
0.020"
Number Of Flutes
4
Helix Angle
Variable Helix
End Style
Radius
Tool Coating
None
Max Reach
0.000"
Country of Origin
U.S.A.
Series
284
Single Or Double End
Single End
Model
Monster-Fusion
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Offer Good Online, Minimum $250 in Purchases, max weight 10 Pounds, on the entire site! Offer good through Sunday

7/5/2026 FREE-SHIP-250
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