PartsTable
Technical Data Sheet
PartsTable / COMPONENT / B51D
B51D ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include color: AMBER LENS, material: PLASTIC LENS, flange_width: 0.250 INCHES NOMINAL IN, overall_height: 1.250 INCHES NOMINAL IN, mounting_method: SNAP RING, overall_diameter: 3.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6220-00-897-5856, 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
B51D
NSN: 6220-00-897-5856
FSC: 6220
CAGE: 13226 — BETTS INDUSTRIES, INC. (USA)
SPECIFICATIONS
colorAMBER LENS
materialPLASTIC LENS
flange_width0.250 INCHES NOMINAL IN
overall_height1.250 INCHES NOMINAL IN
mounting_methodSNAP RING
overall_diameter3.125 INCHES NOMINAL IN
style_designatorCONVEX
surface_conditionSMOOTH FACE
effective_diameter2.375 INCHES NOMINAL IN
end_item_identificationSEMITRAILER,TANK
mounting_device_quantity1
light_transmission_designTRANSLUCENT LENS
NSN6220-00-897-5856
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAP,PROTECTIVE,DUST AND MOISTURE TITLE COMPONENT PN B51D MFR CAP,PROTECTIVE,DUST AN
KEY FEATURES
•
STYLE DESIGNATOR: CONVEX
•
EFFECTIVE DIAMETER: 2.375 INCHES NOMINAL IN
•
SURFACE CONDITION: SMOOTH FACE
•
OVERALL DIAMETER: 3.125 INCHES NOMINAL IN
•
MOUNTING METHOD: SNAP RING
•
FLANGE WIDTH: 0.250 INCHES NOMINAL IN
•
MATERIAL: PLASTIC LENS
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCONVEX
EFFECTIVE DIAMETER2.375 INCHES NOMINAL IN
SURFACE CONDITIONSMOOTH FACE
OVERALL DIAMETER3.125 INCHES NOMINAL IN
END ITEM IDENTIFICATIONSEMITRAILER,TANK
MOUNTING METHODSNAP RING
FLANGE WIDTH0.250 INCHES NOMINAL IN
MATERIALPLASTIC LENS
LIGHT TRANSMISSION DESIGNTRANSLUCENT LENS
MOUNTING DEVICE QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
9265Interchangeable
interchangeable cross-reference
interchangeable
5310EG002Interchangeable
interchangeable cross-reference
interchangeable
51-132Interchangeable
interchangeable cross-reference
interchangeable
8899390Interchangeable
interchangeable cross-reference
interchangeable
2003-400CPSInterchangeable
interchangeable cross-reference
interchangeable
MIL-D-4562Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy B51D?
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 B51D?
B51D is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace B51D?
There are 13 known substitutes for B51D: 9265, 5310EG002, 51-132 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B51D?
B51D is cataloged in the Federal Logistics Information System (FLIS) under NSN 6220-00-897-5856. 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 — B51D

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