PartsTable
Technical Data Sheet
PartsTable / MRO / A257
A257 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 GUIDE,TAPE is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include radius: 1.094 INCHES NOMINAL IN, material: STEEL, body_width: 0.500 INCHES NOMINAL IN, body_height: 0.515 INCHES MAXIMUM IN, body_length: 3.000 INCHES NOMINAL IN, power_source: SOUND POWERED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-208-4493, 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
MRO→ MRO_GENERAL→ A257
NSN: 5915-00-208-4493
FSC: 5915
CAGE: 81815 — COMMUNICATION COIL, INC. DIV - (USA)
SPECIFICATIONS
radius1.094 INCHES NOMINAL IN
materialSTEEL
body_width0.500 INCHES NOMINAL IN
body_height0.515 INCHES MAXIMUM IN
body_length3.000 INCHES NOMINAL IN
power_sourceSOUND POWERED
inclosure_typeHERMETICALLY SEALED
overall_height0.733 INCHES NOMINAL IN
furnished_itemsPLASTIC CASE
impedance_rating600.0 OHMS NOMINAL
outside_diameter0.872 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
style_designatorCONCAVE
NSN5915-00-208-4493
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GUIDE,TAPE TITLE COMPONENT PN A257 MFR GUIDE,TAPE
KEY FEATURES
•
OPERATING TEMP RANGE: -55.0 TO 85.0 CELSIUS DEGC
•
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
•
FREQUENCY BAND WIDTH PER FUNCTION: 16.00 MEGAHERTZ BLANK AND 24.00 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
•
SPECIFIED FREQUENCIES OF DISCRIMINATION PER FUNCTION: 5.00 MEGAHERTZ BLANK AND 16.00 MEGAHERTZ BLANK AND 24.00 MEGAHERTZ BLANK AND 42.00 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
•
LOAD IMPEDANCE PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 2 PIN GROUND THIRD FUNCTION
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING TEMP RANGE-55.0 TO 85.0 CELSIUS DEGC
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH1.000 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
FREQUENCY BAND WIDTH PER FUNCTION16.00 MEGAHERTZ BLANK AND 24.00 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
SPECIFIED FREQUENCIES OF DISCRIMINATION PER FUNCTION5.00 MEGAHERTZ BLANK AND 16.00 MEGAHERTZ BLANK AND 24.00 MEGAHERTZ BLANK AND 42.00 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
LOAD IMPEDANCE PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
FUNCTIONAL TERMINAL TYPE AND QUANTITY2 PIN GROUND THIRD FUNCTION
INCLOSURE TYPEHERMETICALLY SEALED
PRINCIPAL CIRCUITRY TYPE PER FUNCTIONINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
21-0188-00Interchangeable
interchangeable cross-reference
interchangeable
A257Interchangeable
interchangeable cross-reference
interchangeable
257-00Interchangeable
interchangeable cross-reference
interchangeable
257Interchangeable
interchangeable cross-reference
interchangeable
702019-034Interchangeable
interchangeable cross-reference
interchangeable
29KP445Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy A257?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is A257?
A257 is a GUIDE,TAPE. It is classified as a MRO (MRO_GENERAL).
What parts can replace A257?
There are 7 known substitutes for A257: 21-0188-00, A257, 257-00 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A257?
A257 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-208-4493. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — A257

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026