NACHI Milling

NACHI SL4SE Long-Shank Square End Mill (4F)

Name: NACHI SL4SE Long-Shank Square End Mill (4F)
Brand: NACHI

Workpiece material (ISO)

P · SteelM · StainlessN · Non-ferrous

4-flute HSS-Co square end mill for machining steel, stainless steel and non-ferrous metals, with an extended neck/shank for deep reach. Ø3–40 mm in whole-millimetre sizes (38 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 38 catalogue sizes.

4-Flute Square End

A fixed 4-flute square-end geometry (the catalogue's own "4F" designation) across the full size range.

Long-Shank Extended Reach

An extended shank (the catalogue's own "Long-Shank" designation) reaching overall lengths up to 210 mm, for deep-pocket milling beyond the standard 4SE line's 160 mm maximum.

Steel, Stainless & Non-Ferrous Coverage

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

Ø3–40 mm, 60–210 mm Overall Length

Diameters run Ø3–40 mm in whole-millimetre steps, with overall lengths from 60 to 210 mm across 38 sizes.

Workpiece material

Material applicability

Steel

Structural steel SS400
◎ Best fit
Catalogue mark: ◎
Carbon steel S45C/S50C
◎ Best fit
Catalogue mark: ◎
Alloy steel SCM/SCR
◎ Best fit
Catalogue mark: ◎

Hardened steel

Pre-hardened steel NAK
◎ Best fit
Catalogue mark: ◎
High-hardness steel 30–45 HRC
○ Suitable
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: ×

Stainless steel

Stainless steel SUS304/316
◎ Best fit
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: ○

Superalloy

Titanium alloy / heat-resistant alloy -
○ Suitable
Catalogue mark: ○

Source: Catalogue · NACHI 2003-29 catalogue HSS End Mill Selection Chart, visually reviewed for SL4SE. · Selection Chart pages E-4–E-7

Specifications

Sizes & part numbers

NACHI SL4SE Long-Shank Square End Mill (4F) specifications
ORDER NO.	FLUTES	Ø	FLUTE L	OAL	SHANK	COATING
SL4SE3	4	3 mm	15	60	6	HSSCO
SL4SE4	4	4 mm	20	60	8	HSSCO
SL4SE5	4	5 mm	25	65	8	HSSCO
SL4SE6	4	6 mm	25	65	8	HSSCO
SL4SE7	4	7 mm	35	80	10	HSSCO
SL4SE8	4	8 mm	35	80	10	HSSCO
SL4SE9	4	9 mm	45	95	10	HSSCO
SL4SE10	4	10 mm	45	95	10	HSSCO
SL4SE11	4	11 mm	55	105	12	HSSCO
SL4SE12	4	12 mm	55	105	12	HSSCO
SL4SE13	4	13 mm	55	110	16	HSSCO
SL4SE14	4	14 mm	55	110	16	HSSCO
SL4SE15	4	15 mm	65	120	16	HSSCO
SL4SE16	4	16 mm	65	120	16	HSSCO
SL4SE17	4	17 mm	65	130	20	HSSCO
SL4SE18	4	18 mm	65	130	20	HSSCO
SL4SE19	4	19 mm	75	140	20	HSSCO
SL4SE20	4	20 mm	75	140	20	HSSCO
SL4SE21	4	21 mm	75	140	20	HSSCO
SL4SE22	4	22 mm	75	140	20	HSSCO
SL4SE23	4	23 mm	90	160	25	HSSCO
SL4SE24	4	24 mm	90	160	25	HSSCO
SL4SE25	4	25 mm	90	160	25	HSSCO
SL4SE26	4	26 mm	90	160	25	HSSCO
SL4SE27	4	27 mm	90	160	25	HSSCO
SL4SE28	4	28 mm	90	160	25	HSSCO
SL4SE29	4	29 mm	90	160	25	HSSCO
SL4SE30	4	30 mm	90	160	25	HSSCO
SL4SE31	4	31 mm	105	190	32	HSSCO
SL4SE32	4	32 mm	105	190	32	HSSCO
SL4SE33	4	33 mm	105	190	32	HSSCO
SL4SE34	4	34 mm	105	190	32	HSSCO
SL4SE35	4	35 mm	105	190	32	HSSCO
SL4SE36	4	36 mm	105	190	32	HSSCO
SL4SE37	4	37 mm	125	210	32	HSSCO
SL4SE38	4	38 mm	125	210	32	HSSCO
SL4SE39	4	39 mm	125	210	32	HSSCO
SL4SE40	4	40 mm	125	210	32	HSSCO