NACHI Milling

NACHI SLHV Long-Shank Heavy-Duty Square End Mill (4/6F)

Name: NACHI SLHV Long-Shank Heavy-Duty Square End Mill (4/6F)
Brand: NACHI

Workpiece material (ISO)

P · SteelM · StainlessN · Non-ferrous

4/6-flute HSS-Co square end mill for machining steel, stainless steel and non-ferrous metals, for heavy-duty milling, with an extended neck/shank for deep reach. Ø3–50 mm in whole-millimetre sizes (32 catalogue items). Ships in a single coating option.

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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 32 catalogue sizes.

4/6-Flute Heavy-Duty Geometry

A dual flute-count choice (4F or 6F) under the catalogue's own "Heavy-Duty" designation, for higher-rigidity roughing cuts — the same geometry as the HV line.

Long-Shank Extended Reach

An extended shank (the catalogue's own "Long-Shank" designation) reaching overall lengths up to 230 mm, for deep-pocket milling beyond the standard HV 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.

Ø3–50 mm, 60–230 mm Overall Length

Diameters run Ø3–50 mm in whole-millimetre steps, with overall lengths from 60 to 230 mm across 32 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: ×

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 SLHV. · Selection Chart pages E-4–E-7

Specifications

Sizes & part numbers

ORDER NO.	FLUTES	Ø	FLUTE L	OAL	SHANK	COATING
SL4HV3	4	3 mm	15	60	6	HSSCO
SL4HV4	4	4 mm	20	60	8	HSSCO
SL4HV5	4	5 mm	25	65	8	HSSCO
SL4HV6	4	6 mm	25	65	8	HSSCO
SL4HV7	4	7 mm	35	80	10	HSSCO
SL4HV8	4	8 mm	35	80	10	HSSCO
SL4HV9	4	9 mm	45	95	12	HSSCO
SL4HV10	4	10 mm	45	95	12	HSSCO
SL4HV11	4	11 mm	55	105	12	HSSCO
SL4HV12	4	12 mm	55	105	12	HSSCO
SL4HV13	4	13 mm	55	110	16	HSSCO
SL4HV14	4	14 mm	55	110	16	HSSCO
SL4HV15	4	15 mm	65	120	16	HSSCO
SL4HV16	4	16 mm	65	120	16	HSSCO
SL4HV17	4	17 mm	65	130	20	HSSCO
SL4HV18	4	18 mm	65	130	20	HSSCO
SL4HV19	4	19 mm	75	140	20	HSSCO
SL4HV20	4	20 mm	75	140	20	HSSCO
SL4HV22	4	22 mm	75	140	20	HSSCO
SL4HV24 □	4	24 mm	90	160	25	HSSCO
SL4HV25	4	25 mm	90	160	25	HSSCO
SL4HV28	4	28 mm	90	160	25	HSSCO
SL6HV28	6	28 mm	90	160	25	HSSCO
SL4HV30	4	30 mm	90	160	25	HSSCO
SL6HV30	6	30 mm	90	160	25	HSSCO
SL6HV32	6	32 mm	105	190	32	HSSCO
SL6HV35	6	35 mm	105	190	32	HSSCO
SL6HV40	6	40 mm	125	210	32	HSSCO
SL6HV45	6	45 mm	145	230	32	HSSCO
SL6HV45×42	6	45 mm	145	230	42	HSSCO
SL6HV50	6	50 mm	145	230	32	HSSCO
SL6HV50×42	6	50 mm	145	230	42	HSSCO