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MS20825-4K — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS20825-4K: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, leg_length: 0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A THIRD END A, connection_type: THREADED EXTERNAL PIPE THIRD END, connection_style: FLARED (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-348-5231, 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
MS20825-4K
NSN: 4730-00-348-5231
NIINs: 003485231, 009320700
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
leg_length0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class3A THIRD END A
connection_typeTHREADED EXTERNAL PIPE THIRD END
connection_styleFLARED (TUBE) FIRST END
surface_treatmentPASSIVATE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.125 INCHES THIRD END IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
specification/standard_data96906-MS20825 GOVERNMENT STANDARD
material_document_and_classificationQQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-348-5231
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS20825-4K · 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
•
FURNISHED ITEMS AND QUANTITY: 2 FLAT WASHER
•
CONNECTION STYLE: FLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE BODY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 FLAT WASHER
CONNECTION STYLEFLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END
CONNECTION STYLEPLAIN (PIPE) THIRD ENDPLAIN (PIPE) THIRD END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE THIRD ENDTHREADED EXTERNAL PIPE THIRD END
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE BODY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH0.750 INCHES NOMINAL THIRD END0.750 INCHES NOMINAL THIRD END IN
LEG LENGTH0.859 INCHES NOMINAL FIRST END0.859 INCHES NOMINAL FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 4
AS5197Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5197K040402Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4842/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AS4842/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS20825-4K?
MS20825-4K is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace MS20825-4K?
There are 4 known substitutes for MS20825-4K: AS5197, AS5197K040402, SAE-AS4842/1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS20825-4K?
MS20825-4K is cataloged in the U.S. Government catalog under NSN 4730-00-348-5231. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.