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Technical Data Sheet
PartsTable / COMPONENT / MS39170-7
MS39170-7 ✓ 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 CORROSION RESISTING NUT, flow_angle: 90.0 DEGREES, leg_length: 1.141 INCHES MAXIMUM FIRST END IN, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: COMPRESSION (TUBE) ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-240-1770, 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
MS39170-7
NSN: 4730-00-240-1770
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING NUT
flow_angle90.0 DEGREES
leg_length1.141 INCHES MAXIMUM FIRST END IN
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleCOMPRESSION (TUBE) ALL ENDS
surface_treatmentPHOSPHATE NUT
nominal_thread_size0.688 INCHES ALL ENDS IN
seat_nominal_radius0.062 INCHES ALL ENDS IN
maximum_operating_temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_quantity_per_inch20 ALL ENDS
NSN4730-00-240-1770
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS39170-7 · 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
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
•
SURFACE TREATMENT: PHOSPHATE NUT
•
MATERIAL: STEEL CORROSION RESISTING NUT
•
LEG LENGTH: 1.141 INCHES MAXIMUM FIRST END IN
•
MAXIMUM OPERATING TEMP: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
SEAT NOMINAL RADIUS: 0.062 INCHES ALL ENDS IN
•
THREAD QUANTITY PER INCH: 20 ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SURFACE TREATMENTPHOSPHATE NUT
MATERIALSTEEL CORROSION RESISTING NUT
LEG LENGTH1.141 INCHES MAXIMUM FIRST END IN
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
SEAT NOMINAL RADIUS0.062 INCHES ALL ENDS IN
MATERIALSTEEL COMP 316 OR COPPER ALLOY ELBOW
THREAD QUANTITY PER INCH20 ALL ENDS
THREAD CLASS2A ALL ENDS A
LEG LENGTH0.938 INCHES MINIMUM AND 1.141 INCHES MAXIMUM SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
4500-233Interchangeable
interchangeable cross-reference
interchangeable
4033-3Interchangeable
interchangeable cross-reference
interchangeable
52658Interchangeable
interchangeable cross-reference
interchangeable
703Interchangeable
interchangeable cross-reference
interchangeable
327-8Interchangeable
interchangeable cross-reference
interchangeable
29-1549Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS39170-7?
MS39170-7 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace MS39170-7?
There are 10 known substitutes for MS39170-7: 4500-233, 4033-3, 52658 and 7 more. Substitute compatibility should be verified for your specific system.
Is MS39170-7 still available?
MS39170-7 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