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4321226 ✓ 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

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, body_width: 0.875 INCHES NOMINAL IN, body_height: 0.875 INCHES NOMINAL IN, body_length: 1.062 INCHES NOMINAL IN, nut_diameter: 2.511 INCHES MINIMUM AND 2.541 INCHES MAXIMUM 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 4730-01-485-5585, 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
4321226
NSN: 4730-01-485-5585
FSC: 4730
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
body_width0.875 INCHES NOMINAL IN
body_height0.875 INCHES NOMINAL IN
body_length1.062 INCHES NOMINAL IN
nut_diameter2.511 INCHES MINIMUM AND 2.541 INCHES MAXIMUM IN
nut_thickness0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
thread_seriesUNS
inclosure_typeOPEN
drive_end_shape6 POINT STAR BOTH ENDS EXTERNAL
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
long_arm_length200.0 MILLIMETERS NOMINAL MM
NSN4730-01-485-5585
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4321226 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
N09Interchangeable
interchangeable cross-reference
interchangeable
217425PC4Interchangeable
interchangeable cross-reference
interchangeable
215869PC4Interchangeable
interchangeable cross-reference
interchangeable
MJH-001-27Interchangeable
interchangeable cross-reference
interchangeable
CA4586-3Interchangeable
interchangeable cross-reference
interchangeable
3666-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4321226?
4321226 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 4321226?
There are 10 known substitutes for 4321226: N09, 217425PC4, 215869PC4 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4321226?
4321226 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-485-5585. 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