PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1655798-9
1655798-9 ✓ 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,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1118 OVERALL, thread_class: 2A FIRST END2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL, COMPRESSION (TUBE) FIRST ENDGASKET SEAL, COMPRESSION (TUBE) FIRST END, special_features: DYED BLACK, surface_treatment: PHOSPHATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-411-5583, 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
1655798-9
NSN: 4730-00-411-5583
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1118 OVERALL
thread_class2A FIRST END2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL, COMPRESSION (TUBE) FIRST ENDGASKET SEAL, COMPRESSION (TUBE) FIRST END
special_featuresDYED BLACK
surface_treatmentPHOSPHATE OVERALL
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.500 INCHES SECOND END0.500 INCHES SECOND END IN
maximum_operating_temp135.0 FAHRENHEIT SINGLE RESPONSE135.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.812 INCHES IN
thread_series_designatorNPTF SECOND ENDUNF FIRST END
furnished_items_and_quantity1 PREFORMED PACKING AND 1 SHORT COUPLING NUT AND 1 SPLIT COLLET SLEEVE AND 1 FLAT WASHER
NSN4730-00-411-5583
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1655798-9 · 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
•
OPERATING PRESSURE: 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
THREAD SERIES DESIGNATOR: NPTF SECOND END
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
CONNECTION STYLE: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
•
NOMINAL OVERALL LENGTH: 1.812 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD SERIES DESIGNATORNPTF SECOND END
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD SERIES DESIGNATORNPTF SECOND ENDUNF FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH1.812 INCHES IN
CONNECTION STYLEGASKET SEAL, COMPRESSION (TUBE) FIRST ENDGASKET SEAL, COMPRESSION (TUBE) FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2A FIRST END2A FIRST END A
MATERIALSTEEL COMP 1118 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
C12257Interchangeable
interchangeable cross-reference
interchangeable
110 1-1/16Interchangeable
interchangeable cross-reference
interchangeable
10068Interchangeable
interchangeable cross-reference
interchangeable
F927Interchangeable
interchangeable cross-reference
interchangeable
8636362Interchangeable
interchangeable cross-reference
interchangeable
A10068Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1655798-9?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1655798-9?
1655798-9 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 1655798-9?
There are 10 known substitutes for 1655798-9: C12257, 110 1-1/16, 10068 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1655798-9?
1655798-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-411-5583. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1655798-9

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026