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Technical Data Sheet
PartsTable / COMPONENT / 17591FX
17591FX ✓ 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 HOSE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY FLOW CONTROL DEVICE, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN, OPTIONAL END (PIPE) ALL ENDS, special_features: 125PSI SATURATED STEAM; 200PSI NON-SHOCK COLD WATER,OIL OR GAS, style_designator: STRAIGHT THRU, mounting_position: HORIZONTAL OR VERTICAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-235-1397, 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
17591FX
NSN: 4730-01-235-1397
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY FLOW CONTROL DEVICE
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN, OPTIONAL END (PIPE) ALL ENDS
special_features125PSI SATURATED STEAM; 200PSI NON-SHOCK COLD WATER,OIL OR GAS
style_designatorSTRAIGHT THRU
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
supplementary_featuresFLOW CONTROL DEVICE: PLUG
valve_operation_methodAUTOMATIC
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
nominal_pipe_size_accommodated0.750 INCHES ALL ENDS IN
material_document_and_classificationASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY
NSN4730-01-235-1397
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 17591FX · 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 3
330034Interchangeable
interchangeable cross-reference
interchangeable
3300-3/4Interchangeable
interchangeable cross-reference
interchangeable
3300 3/4 INCHInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 17591FX?
17591FX is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace 17591FX?
There are 3 known substitutes for 17591FX: 330034, 3300-3/4, 3300 3/4 INCH. Substitute compatibility should be verified for your specific system.
Is 17591FX still available?
17591FX is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026