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MD1820 — SEMICONDUCTOR DEVICE,DIODE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MD1820: SEMICONDUCTOR DEVICE,DIODE.

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.672 INCHES NOMINAL FIRST END IN, seat_angle: 42.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED INTERNAL PIPE SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-277-9167, 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
MD1820
NSN: 4730-00-277-9167
NIINs: 002779167, 012852453
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76558 — MWM-MURPHY DIESEL CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.672 INCHES NOMINAL FIRST END IN
seat_angle42.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED INTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.625 INCHES FIRST END IN
thread_series_designatorUNF FIRST END
nondefinitive_spec/std_data6C FIGURE
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_pipe_size_accommodated0.250 INCHES SECOND END IN
NSN4730-00-277-9167
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MD1820 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLOW ANGLE: 90.0 DEGREES
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES SECOND END IN
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
CONNECTION TYPE: THREADED INTERNAL PIPE SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
•
LEG LENGTH: 0.672 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES SECOND END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
LEG LENGTH0.672 INCHES NOMINAL FIRST END IN
LEG LENGTH0.672 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE0.625 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 9
6-4 040203BReference document
Same NSN cross-reference
Reference document — Secondary reference
100-45006Reference document
Same NSN cross-reference
Reference document — Secondary reference
150-6BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
J512Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J512Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
10558869Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MD1820?
MD1820 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace MD1820?
There are 9 known substitutes for MD1820: 6-4 040203B, 100-45006, 150-6B and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MD1820?
MD1820 is cataloged in the U.S. Government catalog under NSN 4730-00-277-9167. This indicates validated use in U.S. government and defense supply chains.
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