Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/8" Mill Dia, 1" LOC - Corner-Radius Carbide Roughing End Mills for Steel & Cast Iron
APPROVED VENDORCorner-Radius Carbide Roughing End Mills for Steel & Cast Iron

APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/8" Mill Dia, 1" LOC

SKU 3G-OTH-300045

Brand
APPROVED VENDOR
Item
Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/8" Mill Dia, 1" LOC
Category
Corner-Radius Carbide Roughing End Mills for Steel & Cast Iron
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
257-375878
Type
AlTiN Coated
Mill Dia
3/8"
OAL
2-1/2"
Flute
4
LOC
1"
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is an APPROVED VENDOR roughing end mill used for?

This carbide roughing end mill with AlTiN coating is designed for high‑material‑removal roughing of steel and cast iron. Its corner‑radius geometry reduces chipping, making it suitable for heavy‑duty machining in automotive, die/mold, and general fabrication shops.

What are the specifications of the APPROVED VENDOR 257-375878 end mill?

This 4‑flute carbide end mill has a 3/8" mill diameter, 1" length of cut, and 2‑1/2" overall length. It features an AlTiN coating for heat resistance and a corner‑radius design. The manufacturer part number is 257-375878.

Where to buy APPROVED VENDOR roughing end mills worldwide?

3G Electric supplies APPROVED VENDOR roughing end mills worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote on the 257-375878 or other carbide end mills across 14 industrial departments.

How to select the right roughing end mill for steel?

Select a carbide end mill with AlTiN coating for steel and cast iron, matching flute count and corner radius to your operation. For heavy roughing, a 4‑flute design like the APPROVED VENDOR 257-375878 provides efficient chip evacuation and longer tool life.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR corner-radius carbide roughing end mills for steel & cast iron. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/16" Mill Dia, 5/8" LOC, 2" OAL (MPN 257-187628)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/16" Mill Dia, 5/8" LOC, 2" OAL (MPN 257-187628)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/4" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 257-750115)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 3/4" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 257-750115)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 7/16" Mill Dia, 1" LOC (MPN 257-437103)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 7/16" Mill Dia, 1" LOC (MPN 257-437103)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 5/8" Mill Dia, 1-1/4" LOC (MPN 257-625117)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 5/8" Mill Dia, 1-1/4" LOC (MPN 257-625117)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 5/16" Mill Dia, 13/16" LOC (MPN 257-312815)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 5/16" Mill Dia, 13/16" LOC (MPN 257-312815)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1/4" Mill Dia, 3/4" LOC (MPN 257-250753)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1/4" Mill Dia, 3/4" LOC (MPN 257-250753)

More from APPROVED VENDOR

View all APPROVED VENDOR parts
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 267-100115)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 267-100115)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/8" Mill Dia, 1" LOC, 2-1/2" OAL (MPN 267-375878)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/8" Mill Dia, 1" LOC, 2-1/2" OAL (MPN 267-375878)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1/8" Mill Dia, 1/2" LOC (MPN 257-125503)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1/8" Mill Dia, 1/2" LOC (MPN 257-125503)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/16" Mill Dia, 5/8" LOC, 2" OAL (MPN 267-187628)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/16" Mill Dia, 5/8" LOC, 2" OAL (MPN 267-187628)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1/8" Mill Dia, 1/2" LOC (MPN 267-125503)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1/8" Mill Dia, 1/2" LOC (MPN 267-125503)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 257-100115)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 4 Flute, 1" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 257-100115)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/4" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 267-750115)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 3/4" Mill Dia, 1-1/2" LOC, 4" OAL (MPN 267-750115)
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1/2" Mill Dia, 1" LOC, 3" OAL (MPN 267-500103)
APPROVED VENDOR
APPROVED VENDOR Roughing End Mill: Carbide, AlTiN Coated, 3 Flute, 1/2" Mill Dia, 1" LOC, 3" OAL (MPN 267-500103)