Custom-made special screws

Complete custom-made system! We support various shapes.

We manufacture custom-made screws according to the specifications of the customer.
We support a wide variety of processes such as cutting processes and forging.
Consult us for anything such as screw parts which are not sold in the market, long bolts, bolts with female screws, etc.

 

Head shape processing
Head hole processing

Oval shape

Oval shape

Knurled

Knurled

Hexagonal

Hexagonal

Hexalobular

Hexalobular

Eccentric processing
Head coating
Polishing
Caulking
Eccentric processing Head coating Polishing Caulking
Welding
Through hole processing
Tap processing
Spring post shape
Welding Through hole processing Tap processing Spring post shape

Applicable materials

Stainless steel Nickel alloy

 

Carbon steel This is a generally used material. SS400, S45C, etc.
Alloy steel This is a material often used for high-strength screws. SCM415, etc.
Stainless steel This is a material with excellent corrosion resistance. Comes in austenitic, martensite and ferrite types.
Copper,
copper alloy
This material has excellent thermal conductivity, and extensibility.
Aluminum alloy Lighter than iron, and optimal for weight reduction.
Titanium, titanium alloy This material is light-weight and string. It is often used for airplanes, etc.
Nickel alloy This is a material with excellent thermal resistance and chemical resistance.
POM (resin) This is a resin material with large rigidity and tenaciousness.
PPS (resin) This is a material with excellent thermal resistance and high rigidity.
PTFE (resin) This is a material with excellent chemical resistance and other excellent characteristics.
PEEK (resin) This is a material with excellent thermal resistance etc

Applicable heat treatment, surface treatment (coating)

Applicable heat treatment, surface treatment (coating)
Heat treatment

This is a process which changes the characteristics of the metal by heating the metal and changing the cooling conditions.

Hardening/ tempering Improvement of toughness and wear resistance of steel
Solution treatment Improvement of corrosion resistance, thermal resistance, toughness and ductility of stainless steel
Surface treatment

Thermal treatment that does not change inside of the metal material but only changes the characteristics of the surface of the metal

Carbonizing Wear resistance improves on the surface of the steel keeping the toughness inside.
Nitriding The surface hardness of the steel is improved. Thermal changes are reduced.
High-frequency induction hardening. The surface hardness of the steel is improved. It is possible to adjust the deepness of hardening.
Surface treatment (coating)

This is treatment to form film or a surface reforming layer on the metal surface to add new characteristics or functions.

Zinc plating Improvement of corrosion resistance, environment conscious products
Nickel plating Improvement of corrosion resistance and wear resistance
Chrome plating Improvement of corrosion resistance and wear resistance
Electroless nickel Improvement of corrosion resistance and wear resistance
Blackening Corrosion prevention and coloring
Stainless blackening Improvement of design
Passivating process Corrosion prevention of stainless steel
Buffing, barrel, electrolytic polishing Mirror polishing
Anodization Coloring aluminum and titanium, improvement of corrosion prevention
Hard anodized aluminum Improvement of wear resistance of aluminum
Molybdenum disulfide For reduction of coefficient of friction, improvement of sliding characteristics, prevention of stains
Head coating Coating of screw heads. Consult us for color matching
Fluorine coating For prevention of galling and seizing up
Coating for locking Screw locking. We process according to the conditions of use
Seal coating For preventing fluid leakage
Coating for preventing stains Prevention of stains by coating
Please feel free to contact us for anything about screws.
  • Our strengths|We support all kinds of processing of screws.
  • About the made-in-Vietnam products
  • About JIS screw strength/ torque
  • Screw locking
  • Frequently asked questions
  • The flow of request

Inquiry

Sanei co., ltd.

Mail:web@sanei-screw.com

Inquiry form

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