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98556 — RESISTOR,VARIABLE,WIRE WOUND,NON

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

98556: RESISTOR,VARIABLE,WIRE WOUND,NON.

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include height: 2.875 INCHES NOMINAL IN, diameter: 4.688 INCHES NOMINAL IN, material: RUBBER SYNTHETIC SEALING ELEMENT A, back_gage: 24.000 INCHES IN, bed_width: 12.000 INCHES NOMINAL IN, base_style: SINGLE CONTACT BAYONET CANDELABRA. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-287-1766, 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
98556
NSN: 4730-00-287-1766
NIINs: 002871766, 012717923
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53239 — COMPAIR KELLOGG DIV OF ROBERTSHAW CONTROLS CO (USA)
SPECIFICATIONS
height2.875 INCHES NOMINAL IN
diameter4.688 INCHES NOMINAL IN
materialRUBBER SYNTHETIC SEALING ELEMENT A
back_gage24.000 INCHES IN
bed_width12.000 INCHES NOMINAL IN
base_styleSINGLE CONTACT BAYONET CANDELABRA
body_styleBUSHING MOUNTED
bulb_styleS (STRAIGHT SIDE)
case_styleSQUARE
front_gage35.000 INCHES IN
head_styleFLAT
seal_width0.500 INCHES NOMINAL IN
NSN4730-00-287-1766
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 98556 · 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 9
J512 4 2 060202BAReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J512Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
HA791Reference document
Same NSN cross-reference
Reference document — Secondary reference
269C-4-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
SS1969Reference document
Same NSN cross-reference
Reference document — Secondary reference
38-762-28Reference 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 98556?
98556 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 98556?
There are 9 known substitutes for 98556: J512 4 2 060202BA, SAE-J512, HA791 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 98556?
98556 is cataloged in the U.S. Government catalog under NSN 4730-00-287-1766. This indicates validated use in U.S. government and defense supply chains.
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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.