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1633090 ✓ 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 COMP 316 ELBOW, head_type: SOLID, nut_style: TUBE COUPLING, flow_angle: 45.0 DEGREES, leg_length: 2.01 INCHES NOMINAL SECOND END IN, nut_height: 1.095 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 4730-01-280-8348, 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
1633090
NSN: 4730-01-280-8348
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 ELBOW
head_typeSOLID
nut_styleTUBE COUPLING
flow_angle45.0 DEGREES
leg_length2.01 INCHES NOMINAL SECOND END IN
nut_height1.095 INCHES NOMINAL IN
seat_angle45.0 DEGREES ALL ENDS
flange_width0.177 INCHES NOMINAL IN
reducer_typeCONCENTRIC
thread_class2A ALL ENDS A
thread_length0.750 INCHES NOMINAL EXTERNAL IN
thread_seriesUN
NSN4730-01-280-8348
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1633090 · 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 17
14045Interchangeable
interchangeable cross-reference
interchangeable
E711305Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
11645125Interchangeable
interchangeable cross-reference
interchangeable
22675Interchangeable
interchangeable cross-reference
interchangeable
15304CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1633090?
1633090 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 1633090?
There are 17 known substitutes for 1633090: 14045, E711305, AMS-QQ-A-200/3 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1633090?
1633090 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-280-8348. 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