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Technical Data Sheet
PartsTable / COMPONENT / 271849R1
271849R1 ✓ 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

CAPACITOR,FIXED,GLASS DIELECTRIC. Key specifications include material: IRON OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: RECESSED HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3380, 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
271849R1
NSN: 4730-00-278-3380
FSC: 4730
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialIRON OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleRECESSED HEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentZINC OVERALL
operating_pressure150.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
nominal_thread_size0.750 INCHES EXTERNAL IN
thread_series_designatorNPT EXTERNAL
nondefinitive_spec/std_data2 TYPE AND C STYLE
material_document_and_classificationQQ-I-666,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-278-3380
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 271849R1 · 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
•
HEAD TYPE: SOLID
•
THREAD SERIES DESIGNATOR: NPTF EXTERNAL
•
CONNECTION STYLE: PLAIN
•
SURFACE TREATMENT: ZINC OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.750 INCHES EXTERNAL IN
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
•
BODY TYPE: SOLID
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
HEAD TYPESOLID
THREAD SERIES DESIGNATORNPTF EXTERNAL
CONNECTION STYLEPLAIN
SURFACE TREATMENTZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NOMINAL THREAD SIZE0.750 INCHES EXTERNAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.750 INCHES IN
BODY TYPESOLID
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DRIVE END STYLERECESSED HEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
92A23-49Interchangeable
interchangeable cross-reference
interchangeable
92A23/49-120Interchangeable
interchangeable cross-reference
interchangeable
273469Interchangeable
interchangeable cross-reference
interchangeable
10086134Interchangeable
interchangeable cross-reference
interchangeable
5145013Interchangeable
interchangeable cross-reference
interchangeable
533539PC34Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 271849R1?
271849R1 is a CAPACITOR,FIXED,GLASS DIELECTRIC.
What parts can replace 271849R1?
There are 18 known substitutes for 271849R1: 92A23-49, 92A23/49-120, 273469 and 15 more. Substitute compatibility should be verified for your specific system.
Is 271849R1 still available?
271849R1 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