NACHI Milling

NACHI SL4GE Long-Shank Square End Mill (4F)

Name: NACHI SL4GE 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. G (TiN) coating, 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, G (TiN) Coating

A cobalt-alloyed high-speed-steel body under NACHI's G family (TiN) 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 4GE 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
○ 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
○ 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
○ Suitable
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 SL4GE. · Selection Chart pages E-4–E-7

Specifications

Sizes & part numbers

NACHI SL4GE Long-Shank Square End Mill (4F) specifications
ORDER NO.	FLUTES	Ø	FLUTE L	OAL	SHANK	COATING
SL4GE3	4	3 mm	15	60	6	TiN (G)
SL4GE4	4	4 mm	20	60	8	TiN (G)
SL4GE5	4	5 mm	25	65	8	TiN (G)
SL4GE6	4	6 mm	25	65	8	TiN (G)
SL4GE7	4	7 mm	35	80	10	TiN (G)
SL4GE8	4	8 mm	35	80	10	TiN (G)
SL4GE9	4	9 mm	45	95	10	TiN (G)
SL4GE10	4	10 mm	45	95	10	TiN (G)
SL4GE11	4	11 mm	55	105	12	TiN (G)
SL4GE12	4	12 mm	55	105	12	TiN (G)
SL4GE13	4	13 mm	55	110	16	TiN (G)
SL4GE14	4	14 mm	55	110	16	TiN (G)
SL4GE15	4	15 mm	55	110	16	TiN (G)
SL4GE16	4	16 mm	65	120	16	TiN (G)
SL4GE17	4	17 mm	65	130	20	TiN (G)
SL4GE18	4	18 mm	65	130	20	TiN (G)
SL4GE19	4	19 mm	75	140	20	TiN (G)
SL4GE20	4	20 mm	75	140	20	TiN (G)
SL4GE21	4	21 mm	75	140	20	TiN (G)
SL4GE22	4	22 mm	75	140	20	TiN (G)
SL4GE23	4	23 mm	90	160	25	TiN (G)
SL4GE24	4	24 mm	90	160	25	TiN (G)
SL4GE25	4	25 mm	90	160	25	TiN (G)
SL4GE26	4	26 mm	90	160	25	TiN (G)
SL4GE27	4	27 mm	90	160	25	TiN (G)
SL4GE28	4	28 mm	90	160	25	TiN (G)
SL4GE29	4	29 mm	90	160	25	TiN (G)
SL4GE30	4	30 mm	90	160	25	TiN (G)
SL4GE31	4	31 mm	105	190	32	TiN (G)
SL4GE32	4	32 mm	105	190	32	TiN (G)
SL4GE33	4	33 mm	105	190	32	TiN (G)
SL4GE34	4	34 mm	105	190	32	TiN (G)
SL4GE35	4	35 mm	105	190	32	TiN (G)
SL4GE36	4	36 mm	105	190	32	TiN (G)
SL4GE37	4	37 mm	125	210	32	TiN (G)
SL4GE38	4	38 mm	125	210	32	TiN (G)
SL4GE39	4	39 mm	125	210	32	TiN (G)
SL4GE40	4	40 mm	125	210	32	TiN (G)