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S-203 — CAPACITOR,VARIABLE,AIR DIELECTRI

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

S-203: CAPACITOR,VARIABLE,AIR DIELECTRI.

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: PLASTIC POLYAMIDE NYLON, overall_width: 0.500 INCHES NOMINAL IN, overall_height: 0.375 INCHES NOMINAL IN, overall_length: 1.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-058-9727, 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→ S-203
NSN: 5315-00-058-9727
NIINs: 000589727, 001470811, 001470817, 002285298, 003872471, 003872476, 004878239, 009273494, 009293950, 010068694, 010068695, 010068696, 010068697, 010068698, 010070019, 010070020, 010070021, 010070022, 010070023, 010070024, 010070025, 010070026, 010070027, 010070028, 010070029, 010070030, 010070031, 010070032, 010070033, 010070034, 010070035, 010070036, 010070037, 010070038, 010070039, 010070040, 010070041, 010070042, 010070043, 010070044, 010070045, 010070046, 010070047, 010070048, 010070049, 010070050, 010070051, 010070052, 010070053, 010070054, 010070055, 010072117, 010072118, 010454016, 010831347, 010973486, 011010329, 011252501, 011834681, 011967432, 012357075, 013142013, 014063846
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
overall_width0.500 INCHES NOMINAL IN
overall_height0.375 INCHES NOMINAL IN
overall_length1.125 INCHES NOMINAL IN
NSN5315-00-058-9727
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S-203 · 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 FINISH: 80.0 MICROINCHES OUTSIDE DIAMETER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
DIAMETER: 0.099 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.022 INCHES NOMINAL IN
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 FINISH80.0 MICROINCHES OUTSIDE DIAMETER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSLOTTED
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
DIAMETER0.099 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
OVERALL LENGTH0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
MATERIAL THICKNESS0.022 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
SHEAR STRENGTH1000 DOUBLE POUND
SUBSTITUTES & CROSS-REFERENCES 9
4917326-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
42P11699-5040Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS171492Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
330-122-0033Reference document
Same NSN cross-reference
Reference document — Secondary reference
1263C3-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
79-022-094-0250Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S-203?
S-203 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace S-203?
There are 9 known substitutes for S-203: 4917326-00, 42P11699-5040, MS171492 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S-203?
S-203 is cataloged in the U.S. Government catalog under NSN 5315-00-058-9727. 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.