16NR 0.50 ISO T250 Internal Threading Insert Premium Grade

16NR 0.50 ISO T250 Internal Threading Insert Premium Grade
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Our Price:  £3.60
List Price:  £5.40
Saving Of:  £1.80 (33%)
(Exc. 20% VAT)(£4.32 Inc. VAT)

Model:  16NR0.50ISOT250
Brand:  APT Threading

Shipped Weight:  7g

Availability:  

In stock, immediate despatch  

In stock, immediate despatch

APT Threading

Threading Inserts Fully Ground with High Quality PVD Coatings, Quality Machine Taps and Thread Milling Cutters


16NR 0.50 ISO T250, 0.5mm pitch full form ISO metric internal threading Insert in grade T250.

Grade T250 is micro-grain carbide and is our preimium grade for all types of steel including carbon, alloy and hardened steel also good for cast iron and stainless good choice for general use.

Micrograin carbide provides increased wear resistance and improved tool life.

This bronze colour PVD coated grade covers P25, M25, K30, S15, H10 range of materials.

General Cutting parameters
MaterialHardness HBCutting Speed VC: m/minNumber of PassesApplication Choice
Non alloyed steel 0-0.45℅ C125-17090-190 (140)4-6Good
Low alloyed steel180-35070-140 (100)4-6Good
High alloyed steel200-32550-120 (90)4-6Good
Corrosion resistant steel20060-130 (100)4-6Good
Stainless - Ferritic200-33060-130 (100)4-6OK but try grade T350
Stainless - Austenitic180-20040-140 (90)4-6OK but try grade T350
Stainless - Cast Ferritic200-33060-120 (90)4-6OK but try grade T350
Stainless - Cast Austenitic200-33060-110 (80)4-6OK but try grade T350
Grey cast iron180-26060-130 (100)4-6OK
Spheroidal cast iron160-26090-160 (120)4-6OK
Malleable / Tempered iron130-23060-100 (70)4-6OK
Aluminium Wrought Alloys60-10080-370 (220)4-6OK but try grade AK10
Aluminium Castings Si<12%80-90200-360 (280)4-6OK but try grade AK10
Aluminium Alloys Si 12%-23%13060-180 (120)4-6OK but try grade AK10
Bronze & Brass90-10080-250 (170)4-6OK but try grade AK10
Iron Based Hi-temp Alloys 200-280 HB200-28030-60 (45)4-6OK but try grade T350
Nickel or Cobalt Based 250 HB25020-30 (25)4-6OK but try grade T350
Nickel or Cobalt Based 30-58 HRC35015-25 (20)4-6OK but try grade T350
Pure Titanium400Rm140-170 (150)4-6OK but try grade T350
Titanium  Alpha + Beta Alloys1050Rm50-70 (60)4-6OK but try grade T350
Hardened Steel40-50HRC45-60 (50)4-6OK
Hardened Steel50-55HRC40-50 (45)4-6OK

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