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6304521 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6304521: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include diameter: 0.375 INCHES NOMINAL IN, material: STEEL, leg_length: 0.740 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES AND 45.0 DEGREES FIRST END, construction: SEAMLESS, flange_width: 0.170 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-516-7512, 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
6304521
NSN: 4730-01-516-7512
NIINs: 015167512, 015167712, 015167889, 015167944, 015167946, 015168063, 015168346
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 70433 — APPLETON MARINE INC (USA)
SPECIFICATIONS
diameter0.375 INCHES NOMINAL IN
materialSTEEL
leg_length0.740 INCHES NOMINAL IN
seat_angle37.0 DEGREES AND 45.0 DEGREES FIRST END
constructionSEAMLESS
flange_width0.170 INCHES NOMINAL IN
overall_length0.500 INCHES NOMINAL IN
wall_thickness0.049 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
inside_diameter0.500 INCHES NOMINAL IN
connection_styleSWIVEL NUT FLARE FIRST END
outside_diameter0.890 INCHES NOMINAL IN
NSN4730-01-516-7512
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6304521 · 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 IN DEG: 33.0
•
STYLE DESIGNATOR: SLEEVE
•
SLEEVE OUTSIDE DIAMETER: 0.432 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 81343-J514 070115-6 SA PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
SURFACE TREATMENT: PASSIVATE
•
FLANGE WIDTH: 0.170 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG33.0
STYLE DESIGNATORSLEEVE
OVERALL LENGTH0.500 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.432 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA81343-J514 070115-6 SA PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
SPECIAL FEATURESMATERIAL STAINLESS STEEL COMP 316
SURFACE TREATMENTPASSIVATE
FLANGE WIDTH0.170 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYTUBE SLEEVE
END ITEM IDENTIFICATIONABLTS
SUBSTITUTES & CROSS-REFERENCES 6
J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
070115-6 SAReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
J514 070115-6 SAReference document
Same NSN cross-reference
Reference document — Secondary reference
MS51533Reference document
Same NSN cross-reference
Reference document — Secondary reference
6304521-93Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6304521?
6304521 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 6304521?
There are 6 known substitutes for 6304521: J514, 070115-6 SA, SAE-J514 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6304521?
6304521 is cataloged in the U.S. Government catalog under NSN 4730-01-516-7512. 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.