Accusize APKT1604 TiN Coated Carbide Inserts for Machining Steel

Our review of the Accusize APKT1604 TiN coated carbide inserts finds them to be a practical, cost-conscious choice for shops and hobbyists who machine steel and stainless steel. The single biggest reason to buy is their TiN coating, which consistently improves durability and allows slightly faster cuts without sacrificing surface finish. Reviewers report good cutting ability and a pleasing surface finish, and the 10-piece package makes these inserts easy to stock for short-run production or regular maintenance of tooling inventories.

Key Features

• Insert Geometry: The APKT1604 shape delivers predictable chip control and stability in turning and facing operations.
• TiN Coating: The titanium nitride finish increases wear resistance so inserts hold up longer under continuous cutting conditions.
• Compact Size: With an I.C. of 0.366 in and a 1/32 in radius, these inserts fit tight toolholders and support fine finishing passes.
• Hole Diameter: The 0.173 in hole size matches common clamp-style holders for secure mounting during heavy cuts.
• Pack Quantity: Ten inserts per case give an affordable way to replenish tooling without buying large bulk lots.

Who It's For

This product is aimed at small machine shops, maintenance technicians, and serious home machinists working primarily on steel and stainless steel who need reliable indexable inserts that balance life and cost. The inserts suit users who value a good surface finish and predictable edge life for end milling, turning, and facing operations.

Those who should look elsewhere include heavy production facilities needing advanced multi-layer coatings or specialized substrates for extended high-speed use, and operators who require non-coated or ceramic inserts for very high-temperature, high-speed aluminum or cast iron work.

Pros & Cons

Pros

• Good cutting ability on mild steel and stainless steel delivers consistent results.
• TiN coating extends tool life and helps maintain a clean surface finish across several parts.
• Ten-piece pack is convenient for small shops and offers solid value for money.
• Compact I.C. and 1/32 in radius support fine finishing and tighter tool setups.

Cons

• Not a specialty, multilayer coating for extreme high-speed production environments.
• Limited to applications where TiN-coated carbide is appropriate; not optimal for some nonferrous or exotic materials.

Specifications

Item No	0056-1604
Insert	APKT1604
ISO Designation	APKT160408
Coating	TiN Coated
I.C.	0.366 in
Hole	0.173 in
Radius	1/32 in
Package	10 pcs per case

Our Verdict

The Accusize APKT1604 TiN coated inserts are a practical, cost-effective option for machinists working with steel and stainless steel who need dependable edge life and a good surface finish. They are especially attractive for small shops and hobbyists because of the ten-piece pack and balanced performance, though high-production shops may prefer more advanced coatings for extended life.

Frequently Asked Questions

Are these inserts suitable for stainless steel?
Yes. The product is proven for stainless steel and the TiN coating helps resist wear in that material.

How many inserts come in a package?
The inserts are sold in a case of 10 pieces, which is convenient for small shops or restocking.

What is the I.C. and corner radius?
The insert has an I.C. of 0.366 in and a corner radius of 1/32 in.