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PartsTable / COMPONENT / MS39157-4
MS39157-4 ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: COPPER ALLOY 360 OR COPPER ALLOY 345 OR COPPER ALLOY 350 OR COPPER ALLOY 377 TEE, nut_style: TUBE COUPLING, flow_angle: 90.0 DEGREES, leg_length: 1.00 INCHES NOMINAL FIRST END IN, nut_height: 0.880 INCHES NOMINAL IN, seat_angle: 45.0 DEGREES FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-764-8770, 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
MS39157-4
NSN: 4730-00-764-8770
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER ALLOY 360 OR COPPER ALLOY 345 OR COPPER ALLOY 350 OR COPPER ALLOY 377 TEE
nut_styleTUBE COUPLING
flow_angle90.0 DEGREES
leg_length1.00 INCHES NOMINAL FIRST END IN
nut_height0.880 INCHES NOMINAL IN
seat_angle45.0 DEGREES FIRST END
head_height0.340 INCHES NOMINAL IN
thread_size11/16-18
thread_class2A FIRST END A
physical_formLIQUID
thread_seriesUNF
overall_length0.680 INCHES NOMINAL IN
NSN4730-00-764-8770
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS39157-4 · 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 26
A326Interchangeable
interchangeable cross-reference
interchangeable
204929Interchangeable
interchangeable cross-reference
interchangeable
07-203332Interchangeable
interchangeable cross-reference
interchangeable
333-2Interchangeable
interchangeable cross-reference
interchangeable
125008-39Interchangeable
interchangeable cross-reference
interchangeable
333-093Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS39157-4?
MS39157-4 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace MS39157-4?
There are 26 known substitutes for MS39157-4: A326, 204929, 07-203332 and 23 more. Substitute compatibility should be verified for your specific system.
Is MS39157-4 still available?
MS39157-4 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