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What materials and surface treatments are available at Kotler Precision Machinery?

April 28, 2026

Screw Materials Classification Table

Category Sub-Type Model Description
Nitrided Steel — KTL-101 Standard nitrided screw

— KTL-101B Upgraded nitrided screw
Bimetallic Alloy — KTL-101B A Grade Enhanced wear resistance

— KTL-101B B Grade Higher performance grade
Fully Hard Alloy — KTL-202  GF 30% materials

— KTL-404  GF 50% materials

— KTL-505  GF ≥50% materials

— KTL-303 Optical grade

— KTL-606 Ultra wear-resistant & corrosion-resistant grade
Cemented Carbide Alloy — — High-end carbide solution

Barrel Materials Classification Table

Category Sub-Type Model Description
Nitrided Steel — KTL-ST10 Standard nitrided barrel
Bimetallic Alloy Fe-based KTL-ST20 Iron-based alloy

Fe-Ni based KTL-ST30 Iron-nickel alloy

Ni-based KTL-ST40 Nickel-based alloy

Co-based KTL-ST50 Cobalt-based alloy
Cemented Carbide Alloy — KTL-ST60 High wear-resistant grade

— KTL-ST90 Ultra high-end grade