The AN5-35A is an aircraft-grade hex head bolt manufactured to AN (Army-Navy) aerospace standards. It is commonly used in aircraft structural, engine, and airframe applications where high strength, reliability, and traceability are required.

Key features include:

AN5 series aircraft structural bolt
Size: 5/16-24 UNF thread (AN5 standard)
Length: 3.5 inches (35 = 3.5 inch nominal length)
“A” designation: drilled shank for cotter pin / locking safety wire applications (depending on installation standard)
High-strength alloy steel construction
Corrosion-resistant protective coating (typically cadmium or equivalent aviation finish)
Certified for use in FAA-approved aircraft structures
Pack of 5 pcs for maintenance and assembly use
Common in airframe, control surface, and engine accessory mounting applications
These bolts are part of standard AN/MS aerospace hardware systems, designed for critical load-bearing aircraft assemblies where failure tolerance is extremely low.