Flat seat gold 300HV
We respond to needs with mill sheets and inspection certificates! Please consider our proposal when estimating drawings with specification requirements.
This product is a flat washer with a hardness classification of 300HV. It prevents the nut or bolt head from sinking into the joined material. It can be used when the hole diameter is larger than the bolt diameter or to stabilize the seating surface. It meets needs with a mill certificate and inspection report. The material used is S45C to S55C (domestic material), and it has undergone bright hardening and tempering heat treatment. 【Features】 ■ JIS B1256:2008 ■ Standard shape / Component grade A ■ Marked with engraving ■ Hardness classification of 300HV ■ Comes with a mill certificate and inspection report *For more details, please refer to the PDF document or feel free to contact us.
basic information
【Specifications】 ■Material: S45C to S55C (domestic material) ■Hardness standard: 300 to 370 HV ■Heat treatment: Bright quenching and tempering (blackening treatment) *For more details, please refer to the PDF document or feel free to contact us.
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【Purpose】 ■Estimation of drawings with specification requirements *For more details, please refer to the PDF document or feel free to contact us.
