Products
Product Lineup
"Products that could only be developed with the fastening experience of
Aoyama Seisakusho..."
Aoyama Seisakusho is developing core fastener technologies to create new value for our customers. Our products, which are borne of Aoyama's unique ideas and technologies, are used in every area of the vehicle. We are realizing solutions for our customers, anticipating their needs and improving vehicle quality.
This is Aoyama Seisakusho's "Value-added Manufacturing".
Interior parts
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Plastic
Ergo Grommet
Easy to assemble screw grommets.
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Plastic inserted
Utility Fasteers
Metal and plastic combined fasteners.
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Plastic
Design bolt
Design bolt for increasing luxury,
Exterior parts
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Bolt
Fit-weld bolt
Weld bolt with water sealing function after wendling.
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Bolt
Plasrut®
Thread forming screw for the plastic with easy direct assembly without cracking fixing parts.
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Plastic inserted
Open Weld Nut
Plastic lid on top of the nut eliminates the masking process.
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Plastic inserted
Sealing washer
Washer with the water sealing function without loss of clamping force.
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Plastic inserted
Plastic inserted pivot bolt
Plastic inserting of metal pivot head prevents fixing parts from scratching.
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Plastic inserted
Garnish bolt
Complete insulating by plastinc insertion together with rigid fastening and sealing function.
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Plastic inserted
Insulator clip
Without tools, easy-to-assemble clip that prevents galvanic corrosion that may result insulator falling off.
Upper body parts
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Bolt
Navitite®
The bolts that self-align an angle when fastening.
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Tapping screw
ET Screw®
Easy to assemble thread froming screw for sheet metals.
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Nut
Piercing nut
Environment friendly piercing nuts can be clinched during stamping process and eliminates welding process.
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Plastic inserted
Sealhead®
Bolts with sealing and anti-scratching function.
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Plastic inserted
Spare tire clamp
Easy to handle, recycling efficient fasteners.
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Plastic inserted
Space adjust®
Fasteners adjusting the space between fixing parts.
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Bolt
R Navitite®
Bolt that prevents cross-threading due to misaligned fastening.
Under body, Chassis parts
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Bolt
ND Bolt
Serrated portion under head holds washer from wobbling.
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Nut
Tri-cut nut
Nut with paint scraping flutes on the thread.
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Nut
High strength weld nut
Weld nut for high tensile strength bolt.
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Surface treatment
μ-con®
In-house developed friction coefficient stabilizer.
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Bolt
Fluted R Navitite®
R Navitit with the pait and the welding spatter removing function.
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Bolt
Wheel hub bolt & nut
Critical items like hub bolt and hub nut are available.
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Nut
Aluminum bolt & nut
Bolt with aluminum washer for protection from galvanic corrosion.
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Nut
Stabi-Nut
Special designed flange nut for increasing stability.
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Bolt
High strength bolt
High strength bolts with 1600MPa capability.
Engine / Drivetrain parts
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Bolt
Cylinder head / crank cap bolt
Achieving high clamping force by plastic region fastening.
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Bolt
Connecting rod bolt
High strength bolt having excellent fatigue characteristic.
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Nut
Slit lock nut
Specially designed slit on top of the nuts for the locking feature.
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Bolt
Aluminum bolt
Aluminum bolts suitable for the weight saving..
HV/EV/PHEV/FCV items
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Bolt
RADICLINCH™
Press fiting stad bolt suitable for muti-material fastening.
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Nut
Piearcing nut with lid
Specially designed nut suitable for bus-bar joint with preventing foreign particle from fallin off.
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Collar
Insert collar for plastic
Inexpensive insert collar with high holding force.
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Precision cold formed parts
Positive & Nagative terminals
Noferrous metal such as copper and aluminum also available. Throughly prepared for contorl of contamination.
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Clinching items
Stampit®
Clinching nut without needs of making hole, preventing foreign particle.
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Screw
Totupla®
Specially designed head shape for easy assembley, suitable for automated fastening.
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Screw
Intrtorque®
Specially designed head shape for easy assembley, suitable for automated fastening.
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Function parts
Breather plug
Parts for adjusting interal pressure of parts. It prevents oil leaking, and creates air path when rolling over.
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Surface treatment
Whisker-less plating
Surface treatments that restrain whisker, suitable for electric parts.
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Bolt
Low head bolt
Shallow head desin for weight reduction and securing space inside units.Head strengh is designed to meet required strength.