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103038 — RETAINER,CAPACITOR

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

103038: RETAINER,CAPACITOR.

The RETAINER,CAPACITOR 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 CORROSION RESISTING OVERALL, thread_class: 3A SINGLE THREADED PORTION A, flange_diameter: 0.625 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 37.000 NOMINAL, nominal_thread_size: 0.562 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-139-3200, 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→ 103038
NSN: 4820-00-139-3200
NIINs: 001393200, 012533294
FSC: 4820 — Valves, Nonpowered
CAGE: 86035 — CALGON CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class3A SINGLE THREADED PORTION A
flange_diameter0.625 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg37.000 NOMINAL
nominal_thread_size0.562 INCHES SINGLE THREADED PORTION IN
under_flange_height0.375 INCHES NOMINAL IN
body_inside_diameter0.250 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch20 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.125 INCHES NOMINAL IN
NSN4820-00-139-3200
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 103038 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE SEAT TO DISK END HEIGHT: 0.125 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.562 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.375 INCHES NOMINAL IN
•
THREAD CLASS: 3A SINGLE THREADED PORTION A
•
THREAD QUANTITY PER INCH: 20 SINGLE THREADED PORTION
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
FLANGE SEAT TO DISK END HEIGHT0.125 INCHES NOMINAL IN
FLANGE DIAMETER0.625 INCHES NOMINAL IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER0.250 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.562 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.375 INCHES NOMINAL IN
THREAD CLASS3A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH20 SINGLE THREADED PORTION
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG37.000 NOMINAL
SUBSTITUTES & CROSS-REFERENCES 1
10303-008Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 103038?
103038 is a RETAINER,CAPACITOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 103038?
There is 1 known substitute for 103038: 10303-008. Substitute compatibility should be verified for your specific system.
What is the NSN for 103038?
103038 is cataloged in the U.S. Government catalog under NSN 4820-00-139-3200. 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.