1,Description:

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.

Available in small packing, carton packing, or pallet configurations to meet your shipping and storage requirements.

Manufacturer Information

Manufactured by JIA SHAN Hardware Company with strict quality control measures and pre-shipment inspection.