81-4557 — MOUNTING BASE,ELECTRICAL EQUIPME

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

81-4557: MOUNTING BASE,ELECTRICAL EQUIPME.

MOUNTING BASE,ELECTRICAL EQUIPME. Key specifications include overall_depth: 16.700 INCHES MAXIMUM IN, overall_width: 10.000 INCHES NOMINAL IN, overall_height: 5.300 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5975-01-041-2044, 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

81-4557

NSN: 5975-01-041-2044
FSC: 5975 — Electrical Hardware and Supplies
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)

SPECIFICATIONS

overall_depth	16.700 INCHES MAXIMUM IN
overall_width	10.000 INCHES NOMINAL IN
overall_height	5.300 INCHES NOMINAL IN
special_features	COLLINS PROVIDES MECHANICAL MTG AND ELECTRICAL INTERFACE FOR THE RT-1159/A RECEIVER-TRANSMITTER AND THE MX-9577/A ADAPTER,PERMITTING USE OF THE RT-1159/A IN VARIOUS AIRCRAFT INSTALLATIONS
NSN	5975-01-041-2044

COMPONENT DIAGRAM

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	5.300 INCHES NOMINAL IN
OVERALL WIDTH	10.000 INCHES NOMINAL IN
SPECIAL FEATURES	COLLINS PROVIDES MECHANICAL MTG AND ELECTRICAL INTERFACE FOR THE RT-1159/A RECEIVER-TRANSMITTER AND THE MX-9577/A ADAPTER,PERMITTING USE OF THE RT-1159/A IN VARIOUS AIRCRAFT INSTALLATIONS
OVERALL DEPTH	16.700 INCHES MAXIMUM IN

OTHER ITEMS IN FSC 5975 — Electrical Hardware and Supplies

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5975-00-000-0120 5975-00-000-0126 5975-00-000-7420 5975-00-001-1397 5975-00-001-1538 5975-00-001-1539 5975-00-001-1542 5975-00-001-2444

SUBSTITUTES & CROSS-REFERENCES 2

MT-4915/ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

622-2041-001Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — critical (Q)

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FREQUENTLY ASKED QUESTIONS

What is 81-4557?

81-4557 is a MOUNTING BASE,ELECTRICAL EQUIPME.

What parts can replace 81-4557?

There are 2 known substitutes for 81-4557: MT-4915/A, 622-2041-001. Substitute compatibility should be verified for your specific system.

What is the NSN for 81-4557?

81-4557 is cataloged in the U.S. Government catalog under NSN 5975-01-041-2044. This indicates validated use in U.S. government and defense supply chains.

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81-4557 — MOUNTING BASE,ELECTRICAL EQUIPME

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