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558929 — COUPLER,ROTARY,RADIO FREQUENCY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

558929: COUPLER,ROTARY,RADIO FREQUENCY.

The COUPLER,ROTARY,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.766 INCHES NOMINAL ALL ENDS IN, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-194-1039, 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
558929
NSN: 4730-00-194-1039
NIINs: 001941039, 013075465
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.766 INCHES NOMINAL ALL ENDS IN
seat_angle37.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
surface_treatmentANODIZE OVERALL
nominal_thread_size0.312 INCHES ALL ENDS IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
nominal_outside_diameter_tube_accommodated0.125 INCHES ALL ENDS IN
NSN4730-00-194-1039
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 558929 · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.125 INCHES ALL ENDS IN
•
LEG LENGTH: 0.766 INCHES NOMINAL ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.312 INCHES ALL ENDS IN
•
SEAT ANGLE: 37.0 DEGREES ALL ENDS
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEFLARED (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.125 INCHES ALL ENDS IN
LEG LENGTH0.766 INCHES NOMINAL ALL ENDS IN
NOMINAL THREAD SIZE0.312 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES ALL ENDS
SURFACE TREATMENTANODIZE OVERALL
THREAD CLASS3A ALL ENDS A
MATERIALALUMINUM ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
7500-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
7500X2Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS1034D0202Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS1034Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN821-2DReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 558929?
558929 is a COUPLER,ROTARY,RADIO FREQUENCY.
What parts can replace 558929?
There are 6 known substitutes for 558929: 7500-2, 7500X2, AS1034D0202 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 558929?
558929 is cataloged in the U.S. Government catalog under NSN 4730-00-194-1039. 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.