PartsTable
Technical Data Sheet
PartsTable / MRO / M391
M391 ✓ 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 M391 is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 50.00 MILLIMETERS NOMINAL MM, length: 110.00 MILLIMETERS NOMINAL MM, material: STEEL HOUSING, thickness: 0.031 INCHES NOMINAL IN, lens_color: COLORLESS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5820-00-498-0730, 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→ M391
NSN: 5820-00-498-0730
FSC: 5820
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
shapeRECTANGULAR
width50.00 MILLIMETERS NOMINAL MM
length110.00 MILLIMETERS NOMINAL MM
materialSTEEL HOUSING
thickness0.031 INCHES NOMINAL IN
lens_colorCOLORLESS
hole_diameter0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
overall_width2.500 INCHES NOMINAL IN
overall_height1.750 INCHES NOMINAL IN
overall_length4.562 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
operation_methodPUSH BUTTON OVERALL
NSN5820-00-498-0730
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available M391 TITLE COMPONENT PN M391 MFR M391
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
391AInterchangeable
interchangeable cross-reference
interchangeable
39110Interchangeable
interchangeable cross-reference
interchangeable
039110Interchangeable
interchangeable cross-reference
interchangeable
391Interchangeable
interchangeable cross-reference
interchangeable
D391AInterchangeable
interchangeable cross-reference
interchangeable
LL-2957-14Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy M391?
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 M391?
M391 is a M391. It is classified as a MRO (MRO_GENERAL).
What parts can replace M391?
There are 12 known substitutes for M391: 391A, 39110, 039110 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M391?
M391 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5820-00-498-0730. 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 — M391

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