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PartsTable / COMPONENT / MS51887-3
MS51887-3 ✓ 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,PAPER DIELECTRIC. Key specifications include material: IRON OVERALL, body_type: SOLID, head_type: SOLID, nut_style: PIPE LOCKNUT, core_depth: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, nut_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-193-0869, 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
MS51887-3
NSN: 4730-00-193-0869
FSC: 4730
CAGE: 72423 — FLAGG STANLEY G & CO INC DBA FLAGG BRASS (USA)
SPECIFICATIONS
materialIRON OVERALL
body_typeSOLID
head_typeSOLID
nut_stylePIPE LOCKNUT
core_depth0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
nut_height0.250 INCHES NOMINAL IN
thread_class3A EXTERNAL A
thread_seriesNPT
exterior_colorSILVER OVERALL
drive_end_styleRAISED SQUARE
connection_stylePLAIN
special_featuresHEAD HEIGHT: 0.500 IN. NOM.;BODY LENGTH: 0.750 IN. NOM. IN
NSN4730-00-193-0869
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51887-3 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
267980PC4Interchangeable
interchangeable cross-reference
interchangeable
34898Interchangeable
interchangeable cross-reference
interchangeable
16A138Interchangeable
interchangeable cross-reference
interchangeable
17100-0Interchangeable
interchangeable cross-reference
interchangeable
22153Interchangeable
interchangeable cross-reference
interchangeable
F2277577337Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51887-3?
MS51887-3 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace MS51887-3?
There are 19 known substitutes for MS51887-3: 267980PC4, 34898, 16A138 and 16 more. Substitute compatibility should be verified for your specific system.
Is MS51887-3 still available?
MS51887-3 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