PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 503-0280
503-0280 ✓ 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,CERAMIC DIELECTR. Key specifications include overall_width: 0.500 INCHES NOMINAL IN, inside_diameter: 1.078 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-456-5749, 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
503-0280
NSN: 4730-00-456-5749
FSC: 4730
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
overall_width0.500 INCHES NOMINAL IN
inside_diameter1.078 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
NSN4730-00-456-5749
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 503-0280 · 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
KEY FEATURES
•
INSIDE DIAMETER: 1.078 INCHES MINIMUM AND 1.812 INCHES MAXIMUM 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 (FLIS)
OVERALL WIDTH0.500 INCHES NOMINAL IN
INSIDE DIAMETER1.078 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
28-048Interchangeable
interchangeable cross-reference
interchangeable
8176256Interchangeable
interchangeable cross-reference
interchangeable
1448Interchangeable
interchangeable cross-reference
interchangeable
C449Interchangeable
interchangeable cross-reference
interchangeable
A507Interchangeable
interchangeable cross-reference
interchangeable
8-3100-34Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 503-0280?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 503-0280?
503-0280 is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 503-0280?
There are 26 known substitutes for 503-0280: 28-048, 8176256, 1448 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 503-0280?
503-0280 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-456-5749. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 503-0280

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026