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Technical Data Sheet
28AC ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COVER,JUNCTION BOX is a the manufacturer industrial component. Key specifications include material: STEEL COVER, cover_type: BLANK, overall_height: 0.073 INCHES NOMINAL IN, outside_diameter: 3.500 INCHES NOMINAL IN, style_designator: RAISED OFFSET MOUNTING HOLES, surface_treatment: ZINC OR CADMIUM COVER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5975-00-153-6773, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
28AC
NSN: 5975-00-153-6773
FSC: 5975
CAGE: 76655 — PORTER H K CO INC ELECTRICAL DIV AMBRIDGE WORKS (USA)
SPECIFICATIONS
materialSTEEL COVER
cover_typeBLANK
overall_height0.073 INCHES NOMINAL IN
outside_diameter3.500 INCHES NOMINAL IN
style_designatorRAISED OFFSET MOUNTING HOLES
surface_treatmentZINC OR CADMIUM COVER
mounting_hole_diameter0.312 INCHES NOMINAL IN
supplementary_featuresEND ITEM A-10 AIRCRAFT SUPPORT EQUIPMENT
cover_attachment_methodSCREW AND WASHER
nondefinitive_spec/std_dataA SIZE AND 2 STYLE AND VIII TYPE
cover_mounting_hole_quantity2
standard_wiring_device_quantity1
NSN5975-00-153-6773
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COVER,JUNCTION BOX TITLE COMPONENT PN 28AC MFR COVER,JUNCTION BOX
KEY FEATURES
STANDARD WIRING DEVICE QUANTITY: 1
COVER MOUNTING HOLE CIRCLE DIAMETER: 2.812 INCHES NOMINAL IN
COVER TYPE: BLANK
COVER MOUNTING HOLE QUANTITY: 2
COVER ATTACHMENT METHOD: SCREW AND WASHER
NONDEFINITIVE SPEC/STD DATA: A SIZE AND 2 STYLE AND VIII TYPE
SUPPLEMENTARY FEATURES: END ITEM A-10 AIRCRAFT SUPPORT EQUIPMENT
MATERIAL: STEEL COVER
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD WIRING DEVICE QUANTITY1
COVER MOUNTING HOLE CIRCLE DIAMETER2.812 INCHES NOMINAL IN
COVER TYPEBLANK
COVER MOUNTING HOLE QUANTITY2
COVER ATTACHMENT METHODSCREW AND WASHER
NONDEFINITIVE SPEC/STD DATAA SIZE AND 2 STYLE AND VIII TYPE
SUPPLEMENTARY FEATURESEND ITEM A-10 AIRCRAFT SUPPORT EQUIPMENT
MATERIALSTEEL COVER
MOUNTING HOLE DIAMETER0.312 INCHES NOMINAL IN
STYLE DESIGNATORRAISED OFFSET MOUNTING HOLES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
C78-391Interchangeable
interchangeable cross-reference
interchangeable
24C1Interchangeable
interchangeable cross-reference
interchangeable
24CInterchangeable
interchangeable cross-reference
interchangeable
AA59214-1C8Interchangeable
Same NIIN cross-reference
interchangeable
8301AInterchangeable
Same NIIN cross-reference
interchangeable
A-A-59214Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28AC?
28AC is a COVER,JUNCTION BOX.
What parts can replace 28AC?
There are 9 known substitutes for 28AC: C78-391, 24C1, 24C and 6 more. Substitute compatibility should be verified for your specific system.
Is 28AC still available?
28AC is currently cancelled.
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