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STSPB228 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The TEE,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, leg_length: 2.617 INCHES NOMINAL FIRST END IN, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END, special_features: ALL SPARES FITTED TO THE P-8A AIRCRAFT WILL BE TAGGED AS SAFETY RELATED ITEMS (SRI) A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-318-7296, 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
STSPB228
NSN: 4730-00-318-7296
FSC: 4730
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
leg_length2.617 INCHES NOMINAL FIRST END IN
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END
special_featuresALL SPARES FITTED TO THE P-8A AIRCRAFT WILL BE TAGGED AS SAFETY RELATED ITEMS (SRI) A
style_designatorTEE
surface_treatmentANODIZE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.3125 INCHES FIRST END IN
end_item_identificationP-8A AIRCRAFT A
thread_quantity_per_inch12 ALL ENDS
NSN4730-00-318-7296
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: STSPB228 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
STSPB228Interchangeable
interchangeable cross-reference
interchangeable
STSPB228F040406Interchangeable
interchangeable cross-reference
interchangeable
2-02292F1010Interchangeable
interchangeable cross-reference
interchangeable
ER228-101008Interchangeable
interchangeable cross-reference
interchangeable
VSF1286F101008Interchangeable
interchangeable cross-reference
interchangeable
AS6049V060406Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is STSPB228?
STSPB228 is a TEE,TUBE TO BOSS.
What parts can replace STSPB228?
There are 11 known substitutes for STSPB228: STSPB228, STSPB228F040406, 2-02292F1010 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for STSPB228?
STSPB228 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-318-7296. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026