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230166 — ROCKER ARM,ENGINE POPPET VALVE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

230166: ROCKER ARM,ENGINE POPPET VALVE.

The ROCKER ARM,ENGINE POPPET VALVE is a the manufacturer industrial component. Key specifications include physical_form: LIQUID, end_item_identification: 3431-01-498-4423, part_name_assigned_by_controlling_agency: CIRCUIT CARD, PC1. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-977-8128, 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
MRO→ MRO_GENERAL→ 230166
NSN: 4730-00-977-8128
NIINs: 009778128, 010462010, 015052172, 015083939
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 55469 — ESSEX INDUSTRIES, INC. DBA ESSEX INDUSTRIES (USA)
SPECIFICATIONS
physical_formLIQUID
special_featuresAMMONIUM THIOGLYCOLATE 15.0 TO 25.0 PERCENT RANGE;WEIGHT,VOLUME;THIOGLYCOLIC ACID 40.0 TO 50.0 PERCENT RANGE,VOLUME,VOLUME;KEEP AWAY FROM ACIDS;D.O.T. PROPER SHIPPING NAME TOIC,LIQUID,ORGANIC,N.O.S.
end_item_identification3431-01-498-4423
part_name_assigned_by_controlling_agencyCIRCUIT CARD, PC1
NSN4730-00-977-8128
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 230166 · 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
•
FLANGE SHAPE: OVAL WITH HOLES SECOND END
•
FLOW ANGLE: 90.0 DEGREES
•
FLANGE FACE DESIGN: PLAIN SECOND END
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
NOMINAL LENGTH: 2.220 INCHES SECOND END IN
•
BOLT CIRCLE NOMINAL DIAMETER: 1.578 INCHES SECOND END IN
•
CONNECTION TYPE: FLANGE SECOND END
TECHNICAL CHARACTERISTICS
FLANGE SHAPEOVAL WITH HOLES SECOND END
FLOW ANGLE90.0 DEGREES
FLANGE FACE DESIGNPLAIN SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL LENGTH2.220 INCHES SECOND END IN
BOLT CIRCLE NOMINAL DIAMETER1.578 INCHES SECOND END IN
CONNECTION TYPEFLANGE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
BOLT HOLE NOMINAL DIAMETER0.285 INCHES SECOND END IN
LEG LENGTH0.750 INCHES NOMINAL SECOND END IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 230166?
230166 is a ROCKER ARM,ENGINE POPPET VALVE. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 230166?
230166 is cataloged in the U.S. Government catalog under NSN 4730-00-977-8128. 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.