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417D4 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

417D4: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.187 INCHES NOMINAL IN, hole_diameter: 1.031 INCHES NOMINAL IN, overall_diameter: 2.375 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-203-7272, 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
417D4
NSN: 4730-00-203-7272
NIINs: 002037272, 005955302
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.187 INCHES NOMINAL IN
hole_diameter1.031 INCHES NOMINAL IN
overall_diameter2.375 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN4730-00-203-7272
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 417D4 · 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 (TUBE) SECOND END
•
CONNECTION TYPE: THREADED INTERNAL BOSS THIRD END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED (TUBE) SECOND END
CONNECTION STYLEGASKET SEAL (BOSS) THIRD END
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS THIRD END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
LEG LENGTH2.625 INCHES NOMINAL FIRST END IN
LEG LENGTH1.344 INCHES NOMINAL THIRD END IN
SUBSTITUTES & CROSS-REFERENCES 6
AS1031Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS1031D121212Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4875/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4875/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AN783D12Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN783-12DReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 417D4?
417D4 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 417D4?
There are 6 known substitutes for 417D4: AS1031, AS1031D121212, AS4875/1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 417D4?
417D4 is cataloged in the U.S. Government catalog under NSN 4730-00-203-7272. 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.