NACHI Milling

NACHI SRE Roughing End Mill (4/5/6F)

Name: NACHI SRE Roughing End Mill (4/5/6F)
Brand: NACHI

Workpiece material (ISO)

P · SteelM · StainlessN · Non-ferrous

4/5/6-flute HSS-Co square end mill for machining steel, stainless steel and non-ferrous metals, for high-efficiency roughing. Ø6–50 mm (19 catalogue items). Ships in a single coating option. Part of NACHI's milling tool range.

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Features & uses

Engineered for performance

HSS-Co Substrate, Uncoated

A cobalt-alloyed high-speed-steel body with no coating, across all 19 catalogue sizes.

4/5/6-Flute Roughing Geometry

A 3-way flute-count choice (4F/5F/6F) under the catalogue's own "Roughing" designation, for high material-removal-rate cuts.

Steel, Stainless & Non-Ferrous Coverage

Rated for ISO P (steel), M (stainless steel) and N (non-ferrous metal) material groups.

Ø6–50 mm, 60–160 mm Overall Length

Diameters run Ø6–50 mm, with overall lengths from 60 to 160 mm across 19 sizes.

High-Efficiency Roughing

The catalogue's own "Roughing" line name signals this end mill is purpose-built for bulk stock removal, not finishing passes.

Workpiece material

Material applicability

Steel

Structural steel SS400
○ Suitable
Catalogue mark: ○
Carbon steel S45C/S50C
○ Suitable
Catalogue mark: ○
Alloy steel SCM/SCR
○ Suitable
Catalogue mark: ○

Hardened steel

Pre-hardened steel NAK
○ Suitable
Catalogue mark: ○
High-hardness steel 30–45 HRC
Not marked
Catalogue mark: —
High-hardness steel 45–55 HRC
Excluded
Catalogue mark: ×
High-hardness steel 55–60 HRC
Excluded
Catalogue mark: ×
High-hardness steel 60–66 HRC
Excluded
Catalogue mark: ×

Cast iron

Cast iron FC/FCD
○ Suitable
Catalogue mark: ○

Non-ferrous

Aluminum alloy AC/ADC
○ Suitable
Catalogue mark: ○
Copper Cu
○ Suitable
Catalogue mark: ○

Source: Catalogue · NACHI 2003-29 catalogue HSS End Mill Selection Chart, visually reviewed for SRE. · Selection Chart pages E-4–E-7

Specifications

Sizes & part numbers

NACHI SRE Roughing End Mill (4/5/6F) specifications
ORDER NO.	FLUTES	Ø	FLUTE L	OAL	SHANK	COATING
SRE6	4	6 mm	15	60	6	HSSCO
SRE8	4	8 mm	20	65	10	HSSCO
SRE10	4	10 mm	25	75	10	HSSCO
SRE12	4	12 mm	30	80	12	HSSCO
SRE14	4	14 mm	35	90	16	HSSCO
SRE15	4	15 mm	35	90	16	HSSCO
SRE16	4	16 mm	40	95	16	HSSCO
SRE18	4	18 mm	40	105	20	HSSCO
SRE20	4	20 mm	45	110	20	HSSCO
SRE22	4	22 mm	45	110	20	HSSCO
SRE24	4	24 mm	50	120	25	HSSCO
SRE25	5	25 mm	50	120	25	HSSCO
SRE28	5	28 mm	55	125	25	HSSCO
SRE30	5	30 mm	55	140	32	HSSCO
SRE32	5	32 mm	60	145	32	HSSCO
SRE35	5	35 mm	60	145	32	HSSCO
SRE40	5	40 mm	65	150	42	HSSCO
SRE45	6	45 mm	70	155	42	HSSCO
SRE50	6	50 mm	70	160	42	HSSCO