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 materials. 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 sheet and inspection certificate. 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/Part grade A ■ With marking ■ Hardness classification of 300HV ■ With mill sheet and inspection certificate *For more details, please refer to the PDF document or feel free to contact us.
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【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.
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Yura Sangyo's Special Sales Department aims to contribute to the screw demand industry by ensuring that we can deliver "better screws" at "more reasonable prices" and "just in time" through our wholesale operations of screws and related products. We strive to perfect our various business activities to achieve this goal. 1. Abundant inventory: Over 50,000 items with more than 10,000 tons of stock. 2. Wide range of suppliers: Partnering with 250 domestic and international suppliers, including SPS Unbrako, which specializes in the aerospace sector. 3. Robust immediate delivery system: Quickly responding to customer needs from small lot orders. 4. Reliable quality control: Conducting thorough inspections and traceability from product arrival to delivery in a separate department from the wholesale division, we also handle engineering fasteners (bolts and nuts) based on customer advice and needs. Our product lineup and business details are as follows. We primarily focus on made-to-order production and also handle some branded products from the wholesale division.