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6400-0-12-20SS — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6400-0-12-20SS: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_class: 2A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: FLARED W/ GASKET SEAL (BOSS) SECOND END, nominal_thread_size: 1.625 INCHES SECOND END IN, nominal_overall_length: 2.300 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-378-7809, 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
6400-0-12-20SS
NSN: 4730-01-378-7809
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79926 — SSP FITTINGS CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
nominal_thread_size1.625 INCHES SECOND END IN
nominal_overall_length2.300 INCHES IN
end_item_identificationNIGHT VISION SET
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN SECOND END
nondefinitive_spec/std_data3B FIGURE
specification/standard_data81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated1.250 INCHES FIRST END IN
NSN4730-01-378-7809
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6400-0-12-20SS · 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
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 2.300 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 1.625 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
NOMINAL OVERALL LENGTH2.300 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.250 INCHES FIRST END IN
NOMINAL THREAD SIZE1.625 INCHES SECOND END IN
NOMINAL THREAD SIZE1.063 INCHES FIRST END IN
SPECIFICATION/STANDARD DATA81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA3B FIGURE
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 6
SAE-J514/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
SAE J514 12-20 070120SAReference document
Same NSN cross-reference
Reference document — Secondary reference
J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
6400-12-20-0-SSReference document
Same NSN cross-reference
Reference document — Secondary reference
12-20 070120SAReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J514Reference 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 6400-0-12-20SS?
6400-0-12-20SS is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 6400-0-12-20SS?
There are 6 known substitutes for 6400-0-12-20SS: SAE-J514/1, SAE J514 12-20 070120SA, J514 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6400-0-12-20SS?
6400-0-12-20SS is cataloged in the U.S. Government catalog under NSN 4730-01-378-7809. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.