NACHI Milling

NACHI 4GE Square End Mill (4F)

Name: NACHI 4GE 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. G (TiN) coating, Ø2.5–50 mm (64 catalogue items). Ships in a single coating option. Part of NACHI's milling tool range. Rated for ISO P/M/N material classes.

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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 64 catalogue sizes.

4-Flute Square End

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

Steel, Stainless & Non-Ferrous Coverage

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

Ø2.5–50 mm, 50–160 mm Overall Length

Diameters run Ø2.5–50 mm, with overall lengths from 50 to 160 mm across 64 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
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: ×

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 4GE. · Selection Chart pages E-4–E-7

Specifications

Sizes & part numbers

NACHI 4GE Square End Mill (4F) specifications
ORDER NO.	FLUTES	Ø	FLUTE L	OAL	SHANK	COATING
4GE2.5	4	2.5 mm	7	50	6	TiN (G)
4GE3	4	3 mm	9	50	6	TiN (G)
4GE3.5	4	3.5 mm	12	60	8	TiN (G)
4GE4	4	4 mm	12	60	8	TiN (G)
4GE4.5	4	4.5 mm	15	60	8	TiN (G)
4GE5	4	5 mm	15	60	8	TiN (G)
4GE5.5	4	5.5 mm	15	60	8	TiN (G)
4GE6	4	6 mm	15	60	8	TiN (G)
4GE6.5	4	6.5 mm	20	65	10	TiN (G)
4GE7	4	7 mm	20	65	10	TiN (G)
4GE7.5	4	7.5 mm	20	65	10	TiN (G)
4GE8	4	8 mm	20	65	10	TiN (G)
4GE8.5	4	8.5 mm	25	75	10	TiN (G)
4GE9	4	9 mm	25	75	10	TiN (G)
4GE9.5	4	9.5 mm	25	75	10	TiN (G)
4GE10	4	10 mm	25	75	10	TiN (G)
4GE10.5	4	10.5 mm	30	80	12	TiN (G)
4GE11	4	11 mm	30	80	12	TiN (G)
4GE11.5	4	11.5 mm	30	80	12	TiN (G)
4GE12	4	12 mm	30	80	12	TiN (G)
4GE12.5	4	12.5 mm	35	90	16	TiN (G)
4GE13	4	13 mm	35	90	16	TiN (G)
4GE13.5	4	13.5 mm	35	90	16	TiN (G)
4GE14	4	14 mm	35	90	16	TiN (G)
4GE14.5	4	14.5 mm	40	95	16	TiN (G)
4GE15	4	15 mm	40	95	16	TiN (G)
4GE15.5	4	15.5 mm	40	95	16	TiN (G)
4GE16	4	16 mm	40	95	16	TiN (G)
4GE16.5	4	16.5 mm	40	105	20	TiN (G)
4GE17	4	17 mm	40	105	20	TiN (G)
4GE17.5	4	17.5 mm	40	105	20	TiN (G)
4GE18	4	18 mm	40	105	20	TiN (G)
4GE18.5	4	18.5 mm	45	110	20	TiN (G)
4GE19	4	19 mm	45	110	20	TiN (G)
4GE19.5	4	19.5 mm	45	110	20	TiN (G)
4GE20	4	20 mm	45	110	20	TiN (G)
4GE21	4	21 mm	45	110	20	TiN (G)
4GE22	4	22 mm	45	110	20	TiN (G)
4GE23	4	23 mm	50	120	25	TiN (G)
4GE24	4	24 mm	50	120	25	TiN (G)
4GE25	4	25 mm	50	120	25	TiN (G)
4GE26	4	26 mm	50	120	25	TiN (G)
4GE27	4	27 mm	55	125	25	TiN (G)
4GE28	4	28 mm	55	125	25	TiN (G)
4GE29	4	29 mm	55	125	25	TiN (G)
4GE30	4	30 mm	55	125	25	TiN (G)
4GE31	4	31 mm	60	145	32	TiN (G)
4GE32	4	32 mm	60	145	32	TiN (G)
4GE33	4	33 mm	60	145	32	TiN (G)
4GE34	4	34 mm	60	145	32	TiN (G)
4GE35	4	35 mm	60	145	32	TiN (G)
4GE36	4	36 mm	60	145	32	TiN (G)
4GE37	4	37 mm	65	150	32	TiN (G)
4GE38	4	38 mm	65	150	32	TiN (G)
4GE39	4	39 mm	65	150	32	TiN (G)
4GE40	4	40 mm	65	150	32	TiN (G)
4GE42	4	42 mm	65	150	32	TiN (G)
4GE42×42	4	42 mm	65	155	42	TiN (G)
4GE45	4	45 mm	70	155	32	TiN (G)
4GE45×42	4	45 mm	70	160	42	TiN (G)
4GE48	4	48 mm	70	155	32	TiN (G)
4GE48×42	4	48 mm	70	160	42	TiN (G)
4GE50	4	50 mm	70	155	32	TiN (G)
4GE50×42	4	50 mm	70	160	42	TiN (G)