Hunan Jia Shan Hardware Tech Co., Ltd.
admin@jshardwaretech.com
86-0731 -82919092
Product Details
Place of Origin: China
Brand Name: JIA SHAN
Certification: ISO 9001
Model Number: Customized
Payment & Shipping Terms
Minimum Order Quantity: 10
Price: 0.01-11
Packaging Details: plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film/ Customized as your requirements
Delivery Time: 5-15days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 100000
|
Package Quantity:
|
100 Pieces
|
Color:
|
Customized/Silver/Plain
|
Material:
|
Stainless Steel
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Thread Pitch:
|
Customized
|
Corrosionresistance:
|
High/Customized
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Headtype:
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Shoulder Bolt
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Port:
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Shenzhen, Guangzhou
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Common Uses:
|
Construction, Automotive, Machinery
|
Finish:
|
Plain/anodized/chrome Plating
|
Thread Type:
|
Mechined Thread
|
Rust Proof:
|
Yes
|
Manufacturer:
|
Various Manufacturers
|
|
Package Quantity:
|
100 Pieces
|
|
Color:
|
Customized/Silver/Plain
|
|
Material:
|
Stainless Steel
|
|
Thread Pitch:
|
Customized
|
|
Corrosionresistance:
|
High/Customized
|
|
Headtype:
|
Shoulder Bolt
|
|
Port:
|
Shenzhen, Guangzhou
|
|
Common Uses:
|
Construction, Automotive, Machinery
|
|
Finish:
|
Plain/anodized/chrome Plating
|
|
Thread Type:
|
Mechined Thread
|
|
Rust Proof:
|
Yes
|
|
Manufacturer:
|
Various Manufacturers
|
1,Description:
Shoulder screws are also called shaft shoulder screws, stop screws, stop bolts, brake bolts, equal-height screws, etc. The plug screw is used in conjunction with the bolt pull rod and is mainly used as a mold accessory to control the opening stroke between the fixed mold seat plate, the runner push plate and the fixed mold template in the three-plate mold.
.
Because it can be set on the parting surface of the mold, the mold design can be miniaturized. This type of product features high hardness, good toughness, excellent wear resistance and heat resistance. It is suitable for precision molds and can significantly extend their service life. Especially, the thermal deformation of precision molds has been effectively controlled, making it suitable for molds in high-temperature working environments.
Its standard is ISO 7379. The material of the 12.9 grade plug screw is SCM435 alloy steel, with an overall hardness of HRC40°.
2,Applications:
Grade 109 high-strength carbon steel metric M12x40 captive bolt is professionally developed for lightweight aerospace assembly auxiliary connection scenes, equipped with customized blue zinc plating surface passivation treatment to strengthen surface wear resistance and atmospheric corrosion resistance for high-altitude working environments. Selected Grade 109 heat-treated carbon steel has ultra-high tensile strength and shear resistance, optimized internal metal grain structure after integral quenching and tempering treatment, capable of bearing instantaneous air pressure impact, high-altitude low temperature and strong wind load stress faced by aerospace cabin auxiliary components. The integrated captive limit structure adopts one-piece forging molding, which can realize self-locking limit after embedded installation, prevent bolt falling off under high-altitude vibration and negative pressure environment, eliminate hidden dangers of loose fasteners for aerospace precision equipment. The blue zinc plating passivation layer improves surface insulation performance, avoids minor metal static friction spark inside aerospace closed cabins, and complies with aerospace non-sparking fastener use specifications. Standard M12 metric coarse thread is rolled by high-precision die, with uniform tooth depth and strong bite force, matching reserved limit holes of aircraft auxiliary outer plates, satellite ground assembly brackets and aviation test bench fixed parts. Every batch of products completes professional aerospace-level salt spray test, low temperature torsion test and fatigue resistance test, with unified size tolerance and interchangeable assembly performance. Different from ordinary common captive bolts, this model optimizes shoulder thickness to enhance lateral bearing capacity, adapts to frequent assembly and disassembly of aerospace ground debugging parts, maintains stable mechanical performance under minus 40 degrees low temperature environment, has strong structural stability, and is a dedicated high-strength limit fastener for civil aviation and aerospace ground assembly workshop.
3,Technical Advantages
Material Composition & Maintenance Guide: Grade 109 High Strength Carbon Steel chemical composition: 0.42%-0.50% medium carbon, manganese silicon alloy trace elements, iron matrix, high carbon ratio ensures integral quenching hardness. Material maintenance rules: Blue zinc passivation layer cannot be polished with metal abrasive tools; avoid repeated over-tightening to prevent thread fatigue fracture; apply anti-freeze lubricant before outdoor high-altitude installation; regularly check passivation layer integrity after low-temperature operation; avoid long-term outdoor bare placement, coat special aerospace anti-rust oil for long-term standby storage.
Available in small packing, carton packing, or pallet configurations to meet your shipping and storage requirements.
Manufactured by JIA SHAN Hardware Company with strict quality control measures and pre-shipment inspection.
