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BACC45FN

Receptacle, Bayonet, Square Flange
Connector BACC45FN12 12S7

Boeing Approved Mil-C-26500 Connectors

BACC45FN are Bayonet Receptacles manufactured under Mil-C-26500. The equivalent MS number is MS24264RxxBxxxx. It is coupled with rear insertion, front release contacts.  This connector can be purchased from Stealth Aerospace with or without contacts. When ordering without contacts, please use the term "less contacts" on the order.

This series is currently available in 2 revisions from Stealth Aerospace. Revision U and Revision W. The correct revision for you depends on your application and/or the aircraft where the connector are installed. Under Rev U, the connectors are marked with their equivalent MS number under Mil-C-26500 and tagged with the Boeing part number. Under revision W, the connectors are marked with the Boeing number. Revision W is used mostly on newer aircraft. Please check Boeing Specification Sheets for exact differences between the revisions.

How to order information:

Boeing Series Shell Size Optional Cable Support Insert Arrangement Contact Style Polarization
BACC45FS 10 5 S 6
Available Sizes 8, 10, 12, 14, 16, 18, 20, 22, 24

“-” No Cable Clamp

A – BACC10GH, (1 Legged)

B – MS27559, (90 Degree)

C – MS27291, (Straight)

D – BACC10JC (Special)

E – BACC10JS (Special)

Aerospace Optional Cable Support for BACC45FN available at Stealth Aerospace in Los Angeles / Canopa Park area(MS27291)

Per MIL-STD-1554 and for Shell Size 24()30and ()42 per BACI10N

Varies With Shell Size

S – Sockets P – Pins

None – Normal


Others 6,7,8,9,10


Since about 2000, the drawing was revised to omit the letter ‘N’ for the normal polarization. Before 2000, ‘N’ was placed at the end of the part number to designate Normal.

Tools Used:

Contacts Size Crimp Tool Turret (Positioner) Insertion Tool Removal Tool
Contacts Size Crimp Tool Turret (Positioner) Insertion Tool Removal Tool
No. 20 M22520/1-01 M22520/1-02 MS24256A20 MS24256R20
No. 16 M22520/1-01 M22520/1-02 MS24256A16 MS24256R16
No. 12 M22520/1-01 M22520/1-02 MS24256A12 MS24256R12
Aerospace Cable Crimping Tool for BACC45FN available at Stealth Aerospace in Los Angeles / Canopa Park area Aerospace Turret / Positioner for BACC45FN available at Stealth Aerospace in Los Angeles / Canopa Park area Aerospace Cable Insertion Tool for BACC45FN available at Stealth Aerospace in Los Angeles / Canopa Park area Aerospace Cable Removal Tool for BACC45FN available at Stealth Aerospace in Los Angeles / Canopa Park area

We have build an extensive stock in many of the different shell sizes and contact arrangements available. Here is an example of some of our stocking items. Our inventory is too large to list here, but this is an idea of what these part numbers look like. Special sizes and inert arrangements can be build per order.

BACC45FN12-12S
BACC45FN12A12S
BACC45FN12B12S
BACC45FN12B3S
BACC45FN16-24P6
BACC45FN16A24P6
BACC45FN16B24P6
BACC45FN18-31P
BACC45FN18-31S6
BACC45FN18-31S8
BACC45FN18A31P
BACC45FN18A31S6
BACC45FN18A31S8
BACC45FN18B31P
BACC45FN18B31S6
BACC45FN22-12S
BACC45FN22-55P8
BACC45FN22-55S8
BACC45FN22-55S9
BACC45FN22A12S
BACC45FN22A55P8
BACC45FN22A55S8
BACC45FN22A55S9
BACC45FN22B12S
BACC45FN22B55P8
BACC45FN22B55S8
BACC45FN22B55S9
BACC45FN24-43P
BACC45FN24A43P
BACC45FN24B43P

Please use this page for general information only. Do not rely on this information for design or installations without the proper documentation and training from the original OEM, QPL, and/or PMA holder. Stealth Aerospace shall be held harmless to any damage caused by relying on the information provided within this website.