BAC standard parts include Boeing-defined hardware, structural materials, and components used across aircraft assemblies. This page connects BAC identifiers with item names, manufacturers, NSNs, and availability.
What Are BAC Standard Parts?
BAC numbers identify parts or materials produced to Boeing specifications. A designation may define the component family, dimensions, material, finish, or configuration. Retain the number because a changed suffix or character may represent a different item.
Types of BAC Standard Parts
The catalog includes:
Structural materials: Channels, beams, angles, stiffeners, bars, and sections.
Fasteners: Shear bolts, screws, solid and blind rivets, nuts, and washers.
Bushings and bearings: Parts supporting alignment, movement, and wear control.
Clamps, pins, and shims: Hardware for routing, retention, positioning, spacing, or adjustment.
System components: Ducts, hoses, fittings, adapters, grommets, seals, and control-tube assemblies.
Where BAC Parts Are Applied
BAC parts may be used in airframe construction, structural attachment, system routing, equipment mounting, and moving assemblies. Applications include production, maintenance, structural repair, modifications, overhaul, and inventory replenishment. When a requirement begins with an aircraft model, the commercial aircraft directory connects the platform with records.
BAC Numbers, NSNs, and Aerospace Standards
A BAC number identifies a Boeing-specific part or specification. An NSN identifies a supply item in government logistics, while the manufacturer name identifies the listed source.
BAC identifiers should not be confused with AS Standard parts developed under aerospace specifications. Similar descriptions across BAC and AS records do not establish equivalence.
How to Identify a BAC Part
Compare the BAC number, manufacturer, NSN, drawing reference, material, finish, and revision. Confirm aircraft eligibility using the Boeing drawing, Illustrated Parts Catalog (IPC), Structural Repair Manual (SRM), or approved engineering data.
Request BAC Part Availability
Submit an RFQ with the BAC number, quantity, condition, delivery deadline, and documentation requirements. For structural material, provide the alloy, temper, profile, dimensions, and length.
Search BAC Standard Parts Catalog
Use the table below to compare part numbers, item names, manufacturers, NSNs, and availability before opening the RFQ form.