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ST2988 — REDUCER,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST2988: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, reducer_type: CONCENTRIC, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: SOCKET (TUBE) FIRST END, special_features: F100PW0229, nominal_overall_length: 0.755 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-442-2007, 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
ST2988
NSN: 4730-01-442-2007
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
reducer_typeCONCENTRIC
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleSOCKET (TUBE) FIRST END
special_featuresF100PW0229
nominal_overall_length0.755 INCHES IN
end_item_identificationENGINE, AIRCRAFT F100-PW-229 F15E,F16C/D
nominal_outside_diameter_tube_accommodated0.256 INCHES SECOND END IN
NSN4730-01-442-2007
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST2988 · 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
•
CONNECTION STYLE: PLAIN (TUBE) SECOND END
•
NOMINAL OVERALL LENGTH: 0.755 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.302 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (TUBE) SECOND END
CONNECTION STYLESOCKET (TUBE) FIRST END
NOMINAL OVERALL LENGTH0.755 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.302 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.256 INCHES SECOND END IN
SPECIAL FEATURESF100PW0229
END ITEM IDENTIFICATIONENGINE, AIRCRAFT F100-PW-229 F15E,F16C/D
MATERIALNICKEL ALLOY OVERALL
REDUCER TYPECONCENTRIC
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 ST2988?
ST2988 is a REDUCER,TUBE.
What is the NSN for ST2988?
ST2988 is cataloged in the U.S. Government catalog under NSN 4730-01-442-2007. 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.