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40J50 ✓ 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

HARNESS,SAFETY,PERSONNEL,HOISTIN. Key specifications include material: COPPER, thickness: 0.575 INCHES NOMINAL IN, neck_height: 0.937 INCHES NOMINAL IN, groove_depth: 0.094 INCHES NOMINAL IN, groove_width: 0.266 INCHES NOMINAL IN, flange_diameter: 7.688 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-967-4209, 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
40J50
NSN: 4730-00-967-4209
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER
thickness0.575 INCHES NOMINAL IN
neck_height0.937 INCHES NOMINAL IN
groove_depth0.094 INCHES NOMINAL IN
groove_width0.266 INCHES NOMINAL IN
flange_diameter7.688 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.531 INCHES NOMINAL IN
bolt_hole_quantity8
bolt_circle_diameter6.531 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, BRAZING NECK
groove_pitch_diameter4.909 INCHES NOMINAL IN
NSN4730-00-967-4209
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 40J50 · 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
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
GROOVE DEPTH: 0.094 INCHES NOMINAL IN
•
BOLT HOLE DIAMETER: 0.531 INCHES NOMINAL IN
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 4.000 INCHES IN
•
GROOVE WIDTH: 0.266 INCHES NOMINAL IN
•
NECK HEIGHT: 0.937 INCHES NOMINAL IN
•
FLANGE DIAMETER: 7.688 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
GROOVE DEPTH0.094 INCHES NOMINAL IN
BOLT HOLE DIAMETER0.531 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED4.000 INCHES IN
GROOVE WIDTH0.266 INCHES NOMINAL IN
NECK HEIGHT0.937 INCHES NOMINAL IN
FLANGE DIAMETER7.688 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONGROUND
FLANGE SECTION STYLEPLAIN FACE, BRAZING NECK
BOLT CIRCLE DIAMETER6.531 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
20217-4Interchangeable
interchangeable cross-reference
interchangeable
695805-1Interchangeable
interchangeable cross-reference
interchangeable
137746Interchangeable
interchangeable cross-reference
interchangeable
44-1-16-0Interchangeable
interchangeable cross-reference
interchangeable
03J50Interchangeable
interchangeable cross-reference
interchangeable
5070-060Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40J50?
40J50 is a HARNESS,SAFETY,PERSONNEL,HOISTIN.
What parts can replace 40J50?
There are 17 known substitutes for 40J50: 20217-4, 695805-1, 137746 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40J50?
40J50 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-967-4209. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026