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51810AX — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

51810AX: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, head_style: PAN, body_length: 0.437 INCHES NOMINAL IN, design_type: ANNULAR SLOT SINGLE ANTENNA ELEMENT, head_height: 0.096 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-222-1839, 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
51810AX
NSN: 4730-00-222-1839
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
head_stylePAN
body_length0.437 INCHES NOMINAL IN
design_typeANNULAR SLOT SINGLE ANTENNA ELEMENT
head_height0.096 INCHES NOMINAL IN
thread_class2A A
bore_diameter120.0 MILLIMETERS NOMINAL MM
head_diameter0.322 INCHES NOMINAL IN
overall_width4.000 INCHES NOMINAL IN
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
terminal_typeCONNECTOR, RECEPTACLE SINGLE ANTENNA ELEMENT
NSN4730-00-222-1839
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 51810AX · 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 6
NA200-210Reference document
Same NSN cross-reference
Reference document — Secondary reference
030197Reference document
Same NSN cross-reference
Reference document — Secondary reference
16138Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
120460Reference document
Same NSN cross-reference
Reference document — Secondary reference
112B1-2NPTReference document
Same NSN cross-reference
Reference document — Secondary reference
MS51846-58Reference 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 51810AX?
51810AX is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 51810AX?
There are 6 known substitutes for 51810AX: NA200-210, 030197, 16138 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51810AX?
51810AX is cataloged in the U.S. Government catalog under NSN 4730-00-222-1839. 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.