Quality Control

External Appearance Quality Control Range

Milling Face
  • 1018 Carbon Steel
  • 5052 Aluminum Alloy
  • 304 Stainless Steel
Untreated surface
  • 1018 Carbon Steel
  • 5052 Aluminum Alloy
  • 304 Stainless Steel
  • No hooks and a dot gauge guarantee of scratches of 0.7 mm or smaller.
  • Surface roughness: √Ra6.3 [√Rz25]
  • Depending on the material and size, the product may be shipped with an untreated surface (polishing and rolling).
Surface Treatment
Suspension method image Surface treatment suspension and electrode contact marks
Suspension method image Anodized aluminum (black) Anodized aluminum (white)
Anodized aluminum (black) Anodized aluminum (clear)
  • Since film thickness management is difficult for small diameter precision holes, etc., additional machining may be carried out after processing, and as a result, the surface treatment may not remain on the cutting surface.
  • Surface treatment suspension and electrode contact marks may remain on the product.

Inspection Item

Inspections are Carried Out at Each Work Stage and Before Shipment
Dimensional tolerance inspection Fit tolerance inspection Appearance inspection Screw inspection, etc.
Using a micrometer Using a limit plug gauge Inspection with roughness standard specimen, dot gauge, and roughness tester. ISO2-grade (JIS B 2025) equivalent Bolts pass through in principle.

Dimensional Assurance Range

Corner chamfering
Corner chamfering Corner chamfering

For sharp corners (C0.5 mm and smaller), the external corner chamfer tolerance is C0.1 mm to 0.5 mm, and the internal corner radius tolerance is R0.5 mm or less.

Chamfering unspecified hole entrances
Corner chamfering Corner chamfering

Entrance chamfer is 0.1 to 0.5 mm or less.

Etching quality assurance coverage

Processing method

Etching will be done by either Laser Etching or Machining.

Quality precautions for etching

  • Quality precautions for etching
  • 　- Burrs and burns may occur on the etched area.
  • 　- Some characters may be blurred if you specify an etched character size of 3 to 5 mm.
  • 　- Depending on the material and surface treatment, there is a possibility that the etched characters may become lighter.

Example of etched surface

No surface treatment
  • Laser engraving
  • （Material：SUS304）
  • Machining etching
  • （Material：SUS304）
With surface treatment
  • Laser engraving
  • （Material：A5052）
  • Machining etching
  • （Material：A5052）

Packaging

Interior Exterior
Product packaging Simple 2D diagram Multiple Single
Individual packaging Multiple item packaging Small item packaging
Includes simple 2D diagrams 2 layers of bubble wrap around each side The product label will be affixed to the outside before sending. Sent in a box or bubble wrap bag.

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