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B404 — CAPACITOR ASSEMBLY

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

B404: CAPACITOR ASSEMBLY.

The CAPACITOR ASSEMBLY 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 COMP 303 OR STEEL COMP 303SE OVERALL, thickness: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN, hole_diameter: 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, overall_width: 0.932 INCHES MAXIMUM IN, terminal_type: WIRE LEAD, component_name: FIXED ELECTROLYTIC CAPACITOR. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-260-9847, 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
MRO→ MRO_GENERAL→ B404
NSN: 5310-01-260-9847
NIINs: 012609847, 013019660, 014357745
FSC: 5310 — Nuts and Washers
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
thickness0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
hole_diameter0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
overall_width0.932 INCHES MAXIMUM IN
terminal_typeWIRE LEAD
component_nameFIXED ELECTROLYTIC CAPACITOR
overall_height1.000 INCHES MAXIMUM IN
overall_length1.600 INCHES MAXIMUM IN
mounting_methodTHREADED INSERT
overall_diameter0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
capacitance_value3000.0 MICROFARADS
surface_treatmentPASSIVATE OVERALL
NSN5310-01-260-9847
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B404 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 303 OR STEEL COMP 303SE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
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
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTPASSIVATE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
THICKNESS0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
700022-0011Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SS1-11Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B404?
B404 is a CAPACITOR ASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace B404?
There are 2 known substitutes for B404: 700022-0011, SS1-11. Substitute compatibility should be verified for your specific system.
What is the NSN for B404?
B404 is cataloged in the U.S. Government catalog under NSN 5310-01-260-9847. 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.