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PartsTable / COMPONENT / MS51953-1B
MS51953-1B ✓ 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,CERAMIC DIELECTR. Key specifications include material: STEEL OVERALL, end_item_identification: 6115-01-561-7718 GENERATOR SET, DIESEL ENGINE; LOGISTICS SUPPORT VESSEL, material_document_and_classification: ASTM A53 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A733 ASSN STD SINGLE MATERIAL RESPONSE OVERALL, part_name_assigned_by_controlling_agency: FITTING, NIPPLE 1/8-27 INCH NPT IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-2054, 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
MS51953-1B
NSN: 4730-00-196-2054
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
end_item_identification6115-01-561-7718 GENERATOR SET, DIESEL ENGINE; LOGISTICS SUPPORT VESSEL
material_document_and_classificationASTM A53 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A733 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyFITTING, NIPPLE 1/8-27 INCH NPT IN
NSN4730-00-196-2054
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51953-1B · 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
•
NOMINAL OVERALL LENGTH: 0.750 INCHES IN
•
SURFACE TREATMENT: OXIDE OVERALL
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: CLOSE
•
MATERIAL: STEEL OVERALL
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)
NOMINAL OVERALL LENGTH0.750 INCHES IN
SURFACE TREATMENTOXIDE OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
SURFACE TREATMENTOXIDE OVERALL
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORCLOSE
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL OVERALL LENGTH0.750 INCHES IN
SPECIFICATION/STANDARD DATA81346-ASTM A733 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 96906-MS51953 GOVERNMENT STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
192032Interchangeable
interchangeable cross-reference
interchangeable
2254-4 PIECE 98Interchangeable
interchangeable cross-reference
interchangeable
501357Interchangeable
interchangeable cross-reference
interchangeable
501051Interchangeable
interchangeable cross-reference
interchangeable
33C41Interchangeable
interchangeable cross-reference
interchangeable
4403-4100Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51953-1B?
MS51953-1B is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace MS51953-1B?
There are 23 known substitutes for MS51953-1B: 192032, 2254-4 PIECE 98, 501357 and 20 more. Substitute compatibility should be verified for your specific system.
Is MS51953-1B still available?
MS51953-1B 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