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Technical Data Sheet
PartsTable / COMPONENT / 7N4
7N4 ✓ 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

SEAL,CONICAL,FLARED TUBE FITTING. Key specifications include material: NICKEL ALLOY, body_length: 0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, overall_length: 0.172 INCHES NOMINAL IN, wall_thickness: 0.005 INCHES NOMINAL IN, outside_diameter: 0.369 INCHES NOMINAL IN, special_features: PARTS CODED "L" AFTER DASH WILL BE LOX CLEANED IN ACCORDANCE WITH LOX CLEAN SPEC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-436-1962, 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
7N4
NSN: 4730-00-436-1962
FSC: 4730
CAGE: 33447 — SECO SEALS, INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY
body_length0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
overall_length0.172 INCHES NOMINAL IN
wall_thickness0.005 INCHES NOMINAL IN
outside_diameter0.369 INCHES NOMINAL IN
special_featuresPARTS CODED "L" AFTER DASH WILL BE LOX CLEANED IN ACCORDANCE WITH LOX CLEAN SPEC
style_designatorSEAL
seat_angle_in_deg37.0
casehardening_indicatorNOT CASEHARDENED
end_item_identificationLOW ALTITUDE NAVIGATION AND TARGETING INFRARED SYSTEM
hose/tube_outside_diameter_for_which_designed0.250 INCHES NOMINAL IN
NSN4730-00-436-1962
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7N4 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
BODY LENGTH: 0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
WALL THICKNESS: 0.005 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 37.0
•
STYLE DESIGNATOR: SEAL
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
OVERALL LENGTH0.172 INCHES NOMINAL IN
BODY LENGTH0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
WALL THICKNESS0.005 INCHES NOMINAL IN
SEAT ANGLE IN DEG37.0
STYLE DESIGNATORSEAL
SPECIAL FEATURESPARTS CODED "L" AFTER DASH WILL BE LOX CLEANED IN ACCORDANCE WITH LOX CLEAN SPEC
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
END ITEM IDENTIFICATIONLOW ALTITUDE NAVIGATION AND TARGETING INFRARED SYSTEM
MATERIALNICKEL ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
SEC07C4Interchangeable
interchangeable cross-reference
interchangeable
VSF1015C4BXInterchangeable
interchangeable cross-reference
interchangeable
10158973-1Interchangeable
interchangeable cross-reference
interchangeable
DY90Interchangeable
interchangeable cross-reference
interchangeable
DY90-C-4Interchangeable
interchangeable cross-reference
interchangeable
DY90-N-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7N4?
7N4 is a SEAL,CONICAL,FLARED TUBE FITTING.
What parts can replace 7N4?
There are 14 known substitutes for 7N4: SEC07C4, VSF1015C4BX, 10158973-1 and 11 more. Substitute compatibility should be verified for your specific system.
Is 7N4 still available?
7N4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026