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503458 — RESISTOR,VARIABLE,WIRE WOUND,PRE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

503458: RESISTOR,VARIABLE,WIRE WOUND,PRE.

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include material: STEEL COMP 303 OVERALL, attachment_method: ROUND HOLE, surface_treatment: PASSIVATE OVERALL, peripheral_diameter: 5.562 INCHES NOMINAL IN, center_hole_diameter: 3.302 INCHES MINIMUM AND 3.322 INCHES MAXIMUM IN, cross-sectional_height: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-204-3491, 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
503458
NSN: 4730-00-204-3491
NIINs: 002043491, 005613632, 010210834
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
attachment_methodROUND HOLE
surface_treatmentPASSIVATE OVERALL
peripheral_diameter5.562 INCHES NOMINAL IN
center_hole_diameter3.302 INCHES MINIMUM AND 3.322 INCHES MAXIMUM IN
cross-sectional_height0.375 INCHES NOMINAL IN
attachment_hole_diameter0.164 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
cross-sectional_thickness0.094 INCHES NOMINAL IN
attachment_feature_quantity8
cross-sectional_shape_styleFLANGE
flanged_body_outside_diameter3.497 INCHES MINIMUM AND 3.503 INCHES MAXIMUM IN
attachment_feature_circle_diameter5.062 INCHES NOMINAL FIRST CIRCLE IN
NSN4730-00-204-3491
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 503458 · 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
SUBSTITUTES & CROSS-REFERENCES 10
687456C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
16KP261Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
TY22470Reference document
Same NSN cross-reference
Reference document — Secondary reference
QS100-M32SReference document
Same NSN cross-reference
Reference document — Secondary reference
6732-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
590-010Reference 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 503458?
503458 is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace 503458?
There are 10 known substitutes for 503458: 687456C1, 16KP261, TY22470 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 503458?
503458 is cataloged in the U.S. Government catalog under NSN 4730-00-204-3491. 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.