Largest fastener distributor in Japan since 1952. TRF®, Tamper Resistant Fastener, Security Fastener, 310Slim®, Ultra thin head Screw.
Joined September 2020
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🌱 First in Japan.
SAIMA is the first screw manufacturer in Japan to publish product-level CO₂ emissions data for its self-manufactured screws.
📊 CO₂ data available on our product pages.
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Most security screws use familiar recesses.
But standard security screws don't provide real security.
SAIMA offers rare recess designs like Tricle® — hard to identify, hard to source, and even harder to remove.
For detailed stock information, please visit
en.saima.co.jp/product/trf/t…
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NOTICE
TEMPORARY CLOSURE
Due to the Approaching Typhoon
June 3, 2026
We apologize for any inconvenience and thank you for your understanding.
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【SAMURAI Fastener Story Vol.35 updated!】
Tak Saima talks about publishing CO₂ emissions data for self-manufactured screws — the first initiative of its kind in Japan’s screw industry.
【Vol. 35】SAIMA has published CO₂ emissions data for our screws
▶310ex.com/sfs/sfs_vol35/
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🔩 June 1st is “Screw Day” in Japan!
At SAIMA CORPORATION & 310 EXPRESS COMPANY, we support manufacturers with innovative fastening solutions and flexible small-lot purchasing.
TRF | 310Slim | Non-Sert | 310Micro | 310w/Washer
Need a fastening solution? Contact us anytime.
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Like a samurai, precision leaves no room for excess.
SAIMA’s 310Slim® ultra-low head screw features a 0.5mm head height.
Perfect for robotics, drones, wearables, and compact electronics where every millimeter counts.
Slimmer designs. Less interference. No compromise on strength.
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Many engineers at recent exhibitions shared issues with conventional low head screws:
✔ Cam-out
✔ Damaged hex sockets
✔ Unstable torque in tight spaces
SAIMA’s 310Slim features a 6-Lobe Quastix design for smoother, more reliable fastening.
Already adopted in Europe.
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Low-profile fastening solutions are essential for compact, lightweight product design.
Ultra-low head hex socket screws may lose head strength due to limited material volume.
SAIMA 310Slim Screw balances:
✔ Ultra-low head design
✔ Space saving
✔ Reliable fastening
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Tak Saima, CEO of 310express, discusses SAIMA’s unique “cat screws.” Inspired by a middle schooler and made from recycled PET caps, these ISO metric screws blend sustainability with playful design.
【Vol.34】Do You Like Cats? SAMURAI Fastener Story: 310ex.com/sfs/sfs_vol34/
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SAIMA now offers Low Head Tamper Screws in M3/M4/M5, all standard stock with immediate shipment. Perfect for tamper‑resistant designs in Radio Law–regulated devices and safety‑critical products like toys. Achieve compact design stronger security. Details▼ 310ex.com/product/310tamper/…
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Tak Saima, CEO of 310express, talks about the launch of Faslab—spun off from over 25 years of expertise—to advance fastening technology in Japan.
【Vol. 33】Fastening Lab. Inc.
SAMURAI Fastener Story:
310ex.com/sfs/sfs_vol33/
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Did you know 310Slim is used by ski boot makers?
Its ultra-thin head enables a sleek, flat finish.
Ideal for high performance and refined design.
Reduces protrusion while maintaining fastening.
Explore how it enhances your products—connect!
▶See 310Slim:
310ex.com/product/310slim/
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Eliminate "countersinking" and cut costs with 310Slim, the lowest-profile screw.
No extra machining—save labor.
Use thinner materials without losing strength.
Flush finish for compact designs.
▶ 310ex.com/product/310slim/
▶ saima-shop.com/
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Just back from my Europe trip, it was great to reconnect with many partners! At SAIMA CORPORATION, we focus on niche fastening solutions:
• 310Slim (Ultra Low Head Screws)
310ex.com/product/310slim/
We may be small, but we share unique solutions and insights.
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【SAMURAI Fastener Story Vol.32 updated!】
Tak Saima, CEO of 310express, shares insights on the rapid export of ultra-micro screws and why advanced torque control is essential in precision fastening.
【Vol. 32】Do You Know M1.7 Screws?
▶310ex.com/sfs/sfs_vol32/
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We’re currently in Germany.
We’re excited to meet many of you during our stay!
This is a great opportunity to see and experience our ultra-low-head screws firsthand.
We’ll be here until the 25th — feel free to reach out or schedule a meeting with us:
▶ 310ex.com/contact/
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【SAMURAI Fastener Story Vol.31 updated!】
Tak Saima talks about the new type of tamper screws.
He explains the background behind the requirement for low-head screws even in tamper screws.
【Vol. 31】Low Head Tamper Screws Now available in stock
▶310ex.com/sfs/sfs_vol31/
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March 10 is SAIMA Day. Our team will learn about the SDGs and regional circular business through a Fujisawa Beer brewery tour and talk on sustainable agriculture.
※ Office closed March 10
※ Business resumes March 11
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Developed with SANYO DENKI
Self-tapping screw for plastic frame fan “San Ace”
SY–non-sert®
Unique thread design reduces deformation & cracking.
✔ 5-piece packs available online
✔ For 100 pcs, contact SAIMA directly
🛒saima-shop.com/collections/s…
🔎en.saima.co.jp/product/non-s…
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SAMURAI Fastener Story【Vol.30 Size and Weight Reduction - Miniature Screws (M2 and Smaller)】 updated!
Tak Saima talks about miniature screws.
Learn why they’re called camera screws, what standards exist, and Japan's world-leading supply capabilities.
▶310ex.com/sfs/sfs_vol30/
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