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PartsTable / COMPONENT / 499991-1
499991-1 ✓ 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

POLARIZING KEY,ELECTRICAL CONNEC. Key specifications include color: BLACK, shape: IRREGULAR, overall_width: 0.134 INCHES NOMINAL IN, overall_height: 0.100 INCHES NOMINAL IN, overall_length: 0.335 INCHES NOMINAL IN, special_features: MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-01-298-6004, 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
499991-1
NSN: 5935-01-298-6004
FSC: 5935
CAGE: 00779 — TE CONNECTIVITY CORPORATION (USA)
SPECIFICATIONS
colorBLACK
shapeIRREGULAR
overall_width0.134 INCHES NOMINAL IN
overall_height0.100 INCHES NOMINAL IN
overall_length0.335 INCHES NOMINAL IN
special_featuresMATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE
specification/standard_data55974-6408732 MANUFACTURERS SPECIFICATION CONTROL
NSN5935-01-298-6004
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available POLARIZING KEY,ELECTRICAL CONNEC TITLE COMPONENT PN 499991-1 MFR POLARIZING KEY,ELECTRI
KEY FEATURES
•
COLOR: BLACK
•
SHAPE: IRREGULAR
•
SPECIFICATION/STANDARD DATA: 55974-6408732 MANUFACTURERS SPECIFICATION CONTROL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.335 INCHES NOMINAL IN
OVERALL WIDTH0.134 INCHES NOMINAL IN
OVERALL HEIGHT0.100 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE
COLORBLACK
SHAPEIRREGULAR
SPECIFICATION/STANDARD DATA55974-6408732 MANUFACTURERS SPECIFICATION CONTROL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1734-971Interchangeable
interchangeable cross-reference
interchangeable
452654Interchangeable
interchangeable cross-reference
interchangeable
0181-2210Interchangeable
interchangeable cross-reference
interchangeable
6408732-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 499991-1?
499991-1 is a POLARIZING KEY,ELECTRICAL CONNEC.
What parts can replace 499991-1?
There are 4 known substitutes for 499991-1: 1734-971, 452654, 0181-2210 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 499991-1?
499991-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-01-298-6004. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026