Material, Surface Treatment and Hanging Holes


[CNC Milling Notice1]

Unable to select resin products for new quotation. However, we have resumed accepting orders for previously issued part numbers on November 1.


[CNC Milling Notice2]

The standard shipping days have been extended by 3 days for some steel, stainless steel, and aluminum products. However, the restriction will be lifted and we will resume taking orders on the normal shipping days from Nov. 15.

  • The following materials and surface treatments are possible.
  • *Depending on shape and size, hanging holes may be necessary for surface treatment. Refer to the Design Guidelines for information on hanging holes.
Material Surface Treatment Hanging Holes
  • 1018 Carbon Steel
  • 1018 Carbon Steel (polished)
  • 1018 Carbon Steel (annealed material)
  • 1045 Carbon Steel (polished)
  • 1049 Carbon Steel
  • 1049 Carbon Steel (tempered material)
No treatment
Black oxide
Electroless nickel plating
Hard Chrome Plating(Flash Plating) Required
Trivalent Chromate (Clear) Required
Trivalent chromate (black) Required
Pre-Hardened Steel NAK55 or equivalent No treatment
  • 2017 Aluminum Alloy
  • 5052 Aluminum Alloy
  • 6061 Aluminum Alloy
  • 6063 Aluminum Alloy (polished)
  • 7075 Aluminum Alloy
No treatment
Clear Anodize Required*
Black Anodize Required*
Black Anodize (matte) Required*
Stainless Steel
  • 303 Stainless Steel
  • 304 Stainless Steel
  • 304 Stainless Steel (polished)
  • 316 Stainless Steel
  • 430 Stainless Steel
No treatment
Resin Polyacetal (standard, white) No treatment
Polyacetal (standard, black)
MC Nylon (standard, blue)
MC Nylon (standard, ivory)
MC Nylon (weather resistance, black ash)
Bakelite (paper, natural color)
Bakelite (paper, black)
Bakelite (cloth, natural)
PTFE (Fluorine) (standard, white)
UHPE (conductivity, black)
ABS (standard, natural color)
PEEK (standard, gray-brown)
  • *Steel between materials 1045 Carbon Steel and 1055 Carbon Steel may be used as an equivalent to 1049 Carbon Steel
  • *1018 Carbon Steel (polished) and 1045 Carbon Steel (polished) are not compatible with trivalent chromate.
  • *1018 Carbon Steel (annealed material) is not compatible with trivalent chromate (black) or hard chrome plating.
  • *The film thickness of hard chrome plating (flash plating) is less than 5μ. The hardness (Vickers) is about Hv750~, and it is difficult get the plating on holes and pockets.
  • *1049 Carbon Steel or Equivalent (tempered material) has a hardness of 20 to 27 HRC. Hardness cannot be specified.
  • *Pre-hardened steel between 37 and 43 HRC may be used as an equivalent to NAK55.
  • *Black anodize (matte) is not applicable for 6063 Aluminum Alloy.
  • *Thin plate standards (thickness 3㎜≤Z<5㎜)are not applicable for surface treatment.
  • *Not required for anodized aluminum if the displayed agreement is agreed to.
  • (However, a wire mark may be left)