WIDIA WCE4 square end mill — representative manufacturer series image; refer to the selected material number for exact geometry, dimensions and grade.

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WIDIA WCE4 W421 Square End Mill — Weldon — Inch

Name: WIDIA WCE4 W421 Square End Mill — Weldon — Inch — W421E16028SZW
Brand: WIDIA
SKU: 6945717

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WIDIA WCE4 W421 inch square end mills feature 4 flutes and Weldon shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.

SKU: 6945717

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Technical Specifications

Tool configurations

Article ID	Configuration	Cutting diameter D1 [in]	Shank diameter D [in]	Maximum cutting depth AP1MAX [in]	Overall length L [in]	ANSI catalog number	Grade	Flutes	Shank style
6945716	W421E13026SZW	0.5	0.5	1.5	4	W421E13026SZW	WU20PE	4	Weldon
6945717	W421E16028SZW	0.625	0.625	1.625	4.125	W421E16028SZW	WU20PE	4	Weldon
6945718	W421E19029SZW	0.75	0.75	2.25	5	W421E19029SZW	WU20PE	4	Weldon

Technical documents

WIDIA WCE — English inch technical catalog (2024)

PDF · English

WIDIA WCE — English inch technical catalog (2024) (PDF)

Compare With Similar Items

Product	WIDIA WCE4 W421 Square End Mill — Weldon — Inch View details	WIDIA WCE4 W401 Square End Mill — Straight-Cylindrical — Inch View details	WIDIA WCE4 W401 Square End Mill — Weldon — Inch View details	WIDIA WCE4 W411 Square End Mill — Straight-Cylindrical — Inch View details	WIDIA WCE4 W411 Square End Mill — Weldon — Inch View details	WIDIA WCE4 W421 Square End Mill — Straight-Cylindrical — Inch View details
Description	WIDIA WCE4 W421 inch square end mills feature 4 flutes and Weldon shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.	WIDIA WCE4 W401 inch square end mills feature 4 flutes and straight cylindrical shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.	WIDIA WCE4 W401 inch square end mills feature 4 flutes and Weldon shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.	WIDIA WCE4 W411 inch square end mills feature 4 flutes and straight cylindrical shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.	WIDIA WCE4 W411 inch square end mills feature 4 flutes and Weldon shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.	WIDIA WCE4 W421 inch square end mills feature 4 flutes and straight cylindrical shanks. Compare cutting diameter and length in the manufacturer specifications, then request a quote for the required configuration.
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Technical guidance & FAQs

Applications and materials

WIDIA WCE4 W421 inch square-end mills combine four flutes with a Weldon shank. The square-end geometry supports shoulders, slots and pockets requiring that end form rather than a specified corner radius. WCE4 uses asymmetrical indexing and variable helix for versatile metal milling.

Choosing a configuration

Compare cutting diameter, cutting depth and overall length for the exact W421 tool. Match the Weldon shank to the holder and keep inch ordering numbers separate from the other unit system.

Compatibility and use

Use WCE4 guidance for the actual workpiece and operation; the platform’s primary applications include steel, stainless steel and cast iron. Confirm the selected Weldon shank fits the holder and that the square end geometry meets the component drawing.

Technical documents

WIDIA WCE — English inch technical catalog (2024) (PDF)

When should I choose the square-end version?

Choose it when the shoulder, slot or pocket requires that end form. Radiused and chamfered versions change the outside cutting corner.

How do I compare W421 with another WCE4 length series?

Compare actual cutting depth and overall length at the required diameter. Keep the square end form and Weldon shank consistent when checking a replacement.

Can a similar inch or metric tool be substituted?

Check exact cutting and shank dimensions, end form and required length. This listing uses inch configurations; a converted nominal diameter does not establish an equivalent ordering number.

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WIDIA WCE4 W421 Square End Mill — Weldon — Inch