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Technical Data Sheet
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504209 ✓ 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 FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include phase: SINGLE, drive_type: SPLINE, current_type: AC/DC, overall_length: 15.750 INCHES NOMINAL IN, voltage_rating: 120.000 VOLTS NOMINAL, frequency_rating: 60.0 HERTZ NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-279-0358, 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
504209
NSN: 4730-00-279-0358
FSC: 4730
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
phaseSINGLE
drive_typeSPLINE
current_typeAC/DC
overall_length15.750 INCHES NOMINAL IN
voltage_rating120.000 VOLTS NOMINAL
frequency_rating60.0 HERTZ NOMINAL
special_featuresD-HANDLE; 2800 BPM; 1-1/4 IN. SOLID BIT, 2 IN. CORE BIT CAPACITY IN
speed_adjustmentsSINGLE SPEED
no_load_speed_in_rpm550.0 NOMINAL
alternating_current_rating_in_amps6.0
NSN4730-00-279-0358
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 504209 · 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
•
SHANK LENGTH: 0.250 INCHES NOMINAL IN
•
HEIGHT: 0.562 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
SHANK DIAMETER: 0.257 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SHANK LENGTH0.250 INCHES NOMINAL IN
HEIGHT0.562 INCHES NOMINAL IN
SPECIAL FEATURESSHANK SERRATED,AND BODY LOCA TED BALL CHECK VALVE
STYLE DESIGNATORSTRAIGHT
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
SHANK DIAMETER0.257 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
FM2DInterchangeable
interchangeable cross-reference
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1667Interchangeable
interchangeable cross-reference
interchangeable
FM20Interchangeable
interchangeable cross-reference
interchangeable
221A2000HMSInterchangeable
interchangeable cross-reference
interchangeable
MIL-R-55182/5Interchangeable
interchangeable cross-reference
interchangeable
RNC65K2000FMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 504209?
504209 is a FITTING,LUBRICATION.
What parts can replace 504209?
There are 12 known substitutes for 504209: FM2D, 1667, FM20 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 504209?
504209 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-279-0358. 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