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Technical Data Sheet
PartsTable / COMPONENT / AT-157/U
AT-157/U ✓ 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 AT-157/U is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-504-7777, 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
AT-157/U
NSN: 5985-00-504-7777
FSC: 5985
CAGE: 80058 — JOINT ELECTRONICS TYPE DESIGNATION SYSTEM (USA)
SPECIFICATIONS
Part NumberAT-157/U
NSN5985-00-504-7777
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available AT-157/U TITLE COMPONENT PN AT-157/U MFR AT-157/U
KEY FEATURES
•
SURFACE TREATMENT: ENAMEL OUTSIDE
•
MOUTH LENGTH: 2.127 INCHES MINIMUM AND 2.247 INCHES MAXIMUM IN
•
FREQUENCY RANGE RATING: +12.4 TO 18.0 GIGAHERTZ
•
MATERIAL: ALUMINUM
•
ACCOMMODATED CONDUCTOR TYPE: WAVEGUIDE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTENAMEL OUTSIDE
SURFACE TREATMENTANODIZED INSIDE
MOUTH LENGTH2.127 INCHES MINIMUM AND 2.247 INCHES MAXIMUM IN
FREQUENCY RANGE RATING+12.4 TO 18.0 GIGAHERTZ
MATERIALALUMINUM
ACCOMMODATED CONDUCTOR TYPEWAVEGUIDE
OVERALL WIDTH2.127 INCHES MINIMUM AND 2.247 INCHES MAXIMUM IN
OVERALL LENGTH3.377 INCHES MINIMUM AND 3.497 INCHES MAXIMUM IN
CONNECTION METHODWAVEGUIDE FLANGE
OVERALL HEIGHT1.627 INCHES MINIMUM AND 1.747 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
639Interchangeable
interchangeable cross-reference
interchangeable
639-390Interchangeable
interchangeable cross-reference
interchangeable
11730871Interchangeable
interchangeable cross-reference
interchangeable
385AInterchangeable
interchangeable cross-reference
interchangeable
0042873Interchangeable
interchangeable cross-reference
interchangeable
0042873-0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT-157/U?
AT-157/U is a AT-157/U.
What parts can replace AT-157/U?
There are 21 known substitutes for AT-157/U: 639, 639-390, 11730871 and 18 more. Substitute compatibility should be verified for your specific system.
Is AT-157/U still available?
AT-157/U is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026