Quality Control

Inspection Items

Dimensional tolerance inspection for inner diameter

Measurement with an inner diameter micrometer

Dimensional tolerance inspection for outer diameter​​

Measurement with a micrometer

Dimensional tolerance inspection for length

Measurement with a vernier caliper

Fit tolerance inspection

Using a limit plug gauge or pin gauge

Internal and External Thread

In principle, an ISO2 (JIS B 2025) equivalent bolt or nut should be used

Visual inspection

Measured with roughness measurement equipment, dot gauge, and surface roughness tester

Packaging

Examples of packaging materials

Caution

For steel products without surface treatment and rust-prone treatments such as Black oxide, rust-preventive oil is applied before delivery, but rust may still occur depending on storage conditions. Please unpack and inspect the products immediately upon receipt.

Packing for Delivery

Product and drawings are enclosed in bubble wrap

Tack label attached

Packing for Delivery (single item)

Packing for Delivery (multiple items)

Packing for long products (wooden pallet delivery)

Wrapped with bubble cushion

Drawing is included
Product label is attached

Wrapped with cardboard

Packing (Water-proof wrapping)

Caution

 
You need to dispose the wooden pallet and receive the product by forklift.
Please write your delivery address in the comment field when requesting a manual quote.

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