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Technical Data Sheet
PartsTable / COMPONENT / LL300-M
LL300-M ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: IRON MALLEABLE OVERALL, overall_depth: 4.375 INCHES NOMINAL IN, overall_width: 5.750 INCHES NOMINAL IN, overall_length: 10.500 INCHES NOMINAL IN, style_designator: OBLONG, surface_treatment: CADMIUM AND ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5975-00-239-0346, 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
LL300-M
NSN: 5975-00-239-0346
FSC: 5975
CAGE: 03743 — EGS ELECTRICAL GROUP APPLETON DIV (USA)
SPECIFICATIONS
materialIRON MALLEABLE OVERALL
overall_depth4.375 INCHES NOMINAL IN
overall_width5.750 INCHES NOMINAL IN
overall_length10.500 INCHES NOMINAL IN
style_designatorOBLONG
surface_treatmentCADMIUM AND ZINC OVERALL
trade_designationLL SERIES
cover_opening_width3.562 INCHES NOMINAL IN
cover_opening_length8.375 INCHES NOMINAL IN
conduit_entrance_typeHUB DRILLED AND TAPPED ALL ENTRANCE
conduit_type_accommodatedRIGID METALLIC THICKWALL ALL ENTRANCE
cover_mounting_surface_typeFLAT
NSN5975-00-239-0346
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SOCKET,PLUG-IN ELECTRONIC COMPON TITLE COMPONENT PN LL300-M MFR SOCKET,PLUG-IN ELECTRO
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 3 IN. SIZE IN
•
COVER OPENING LENGTH: 8.375 INCHES NOMINAL IN
•
COVER OPENING WIDTH: 3.562 INCHES NOMINAL IN
•
STYLE DESIGNATOR: OBLONG
•
MATERIAL: IRON MALLEABLE OVERALL
•
SURFACE TREATMENT: CADMIUM AND ZINC OVERALL
•
TRADE DESIGNATION: LL SERIES
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DEPTH4.375 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA3 IN. SIZE IN
COVER OPENING LENGTH8.375 INCHES NOMINAL IN
COVER OPENING WIDTH3.562 INCHES NOMINAL IN
STYLE DESIGNATOROBLONG
MATERIALIRON MALLEABLE OVERALL
SURFACE TREATMENTCADMIUM AND ZINC OVERALL
TRADE DESIGNATIONLL SERIES
CONDUIT TRADE SIZE ACCOMMODATED3.000 INCHES ALL ENTRANCE IN
COVER MOUNTING SURFACE TYPEFLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
81636Interchangeable
interchangeable cross-reference
interchangeable
70304Interchangeable
interchangeable cross-reference
interchangeable
B15Interchangeable
interchangeable cross-reference
interchangeable
51-71-12Interchangeable
interchangeable cross-reference
interchangeable
J1142-4505-1Interchangeable
interchangeable cross-reference
interchangeable
662136-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LL300-M?
LL300-M is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace LL300-M?
There are 17 known substitutes for LL300-M: 81636, 70304, B15 and 14 more. Substitute compatibility should be verified for your specific system.
Is LL300-M still available?
LL300-M 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