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KouSeiko SUS304 Stainless Steel Hex Bolt M8 x 3.5, Pack of 100
Product Details
Brand: Mitsu Seikō, Seal of the Sea Lion
High-quality Japanese-made stainless steel hex bolts
Part Number: M8 x 35, 100 pieces
These were stored in bulk in a warehouse in their original cardboard box.
The outer box shows some age-related deterioration, such as dirt, scuffs, and fading from storage. However, the bolts inside are unused and in like-new condition.
These are premium products from Mitsu Seikō, a reputable, long-established Japanese manufacturer that also produces screw parts for ships.
Their most notable feature, compared to regular stainless steel bolts, is their superior workability and resistance to galling (seizing). They also offer excellent corrosion resistance, making them ideal for fastening in wet environments, outdoors, or anywhere rust is undesirable.
- Model: Fully threaded, M8 x 35
- Size: Thread length 35mm
- Pitch: 1.25mm
- Quantity: 100 pcs
- Material: Stainless Steel SUS304
- Type: Hex Bolt
- Country of Manufacture: Japan
*The ballpoint pen in the image is for size reference only and is not included.
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HSK Mitsu Seikō Corporation Bolt Seal of the Sea Lion Made in Japan JP stainless steel DIY
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.



