12NB-108 – Nut – Internal Wrenching (Alt. to 12B108)

High-strength aerospace internal wrenching nut designed for use in structural aircraft assemblies where compact geometry and high load capacity are required. It features an internal drive interface that allows installation with a matching wrench or key, making it suitable for confined or recessed installation areas. This type of nut is commonly used in primary structures where high clamping loads and reliable torque transmission are essential. It serves as an approved alternative to 12B108 in applicable aerospace installations.

Application:
Aircraft structural assemblies, wing and fuselage joints, landing gear attachments, engine mount structures, and other high-load aerospace fastening points requiring internal wrenching hardware

Function:
Provides a high-strength threaded fastening connection with internal wrench engagement, enabling secure installation in recessed locations while maintaining clamp load and structural integrity under vibration and cyclic loading