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878681R31 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

878681R31: CAPACITOR,FIXED,ELECTROLYTIC.

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL OVERALL, anode_type: PLAIN FOIL, body_style: W/O MTG FACILITIES, TERMINAL(S) ON ONE END, point_type: CONVENTIONAL, body_length: 4.500 INCHES NOMINAL IN, point_angle: 118.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-844-7976, 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
878681R31
NSN: 4720-00-844-7976
FSC: 4720 — Hose and Flexible Tubing
CAGE: 45RP7 — DRESSTA NORTH AMERICA LTD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, TERMINAL(S) ON ONE END
point_typeCONVENTIONAL
body_length4.500 INCHES NOMINAL IN
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
flute_length0.875 INCHES NOMINAL IN
body_diameter1.438 INCHES NOMINAL IN
flute_quantity2
overall_length1.875 INCHES NOMINAL IN
shank_diameter0.059 INCHES NOMINAL IN
NSN4720-00-844-7976
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 878681R31 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings 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
SUBSTITUTES & CROSS-REFERENCES 2
878681R11Reference document
Same NSN cross-reference
Reference document — Secondary reference
CH659Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 878681R31?
878681R31 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace 878681R31?
There are 2 known substitutes for 878681R31: 878681R11, CH659. Substitute compatibility should be verified for your specific system.
What is the NSN for 878681R31?
878681R31 is cataloged in the U.S. Government catalog under NSN 4720-00-844-7976. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.