PartsTable
Technical Data Sheet
MS20823-4K ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 ELBOW, flow_angle: 90.0 DEGREES, leg_length: 0.703 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL PIPE SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-279-7814, 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
MS20823-4K
NSN: 4730-00-279-7814
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 316 ELBOW
flow_angle90.0 DEGREES
leg_length0.703 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_styleFLARED (TUBE) FIRST END
surface_treatmentPASSIVATE INSIDE
nominal_thread_size0.125 INCHES SECOND END IN
thread_quantity_per_inch20 FIRST END
thread_series_designatorNPTF SECOND END
nominal_pipe_size_accommodated0.125 INCHES SECOND END IN
NSN4730-00-279-7814
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS20823-4K · 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
SEAT ANGLE: 37.0 DEGREES FIRST END
THREAD CLASS: 3A FIRST END A
LEG LENGTH: 0.500 INCHES NOMINAL SECOND END IN
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
THREAD SERIES DESIGNATOR: UNF FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE37.0 DEGREES FIRST END
THREAD CLASS3A FIRST END A
LEG LENGTH0.500 INCHES NOMINAL SECOND END IN
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
LEG LENGTH0.703 INCHES NOMINAL FIRST END IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 316 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
MS20823-8JInterchangeable
interchangeable cross-reference
interchangeable
AS5196J0806Interchangeable
interchangeable cross-reference
interchangeable
AS5196J1212Interchangeable
interchangeable cross-reference
interchangeable
AN823-12JInterchangeable
interchangeable cross-reference
interchangeable
AS5196Interchangeable
interchangeable cross-reference
interchangeable
AS48421/1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20823-4K?
MS20823-4K is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace MS20823-4K?
There are 28 known substitutes for MS20823-4K: MS20823-8J, AS5196J0806, AS5196J1212 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS20823-4K?
MS20823-4K is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-279-7814. This indicates validated use in U.S. government and defense supply chains.
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