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STSPB315 — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

STSPB315: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, connection_type: THREADED EXTERNAL TUBE ALL ENDS, style_designator: FLARELESS W/ BULKHEAD THREADS, nominal_overall_length: 2.227 INCHES IN, end_item_identification: C-5A AIRCRAFT A, part_name_assigned_by_controlling_agency: UNION-FLARELESS,STANDARD AND REDUCER,BULKHEAD UNIVERSAL,REDUCED ENVELOPE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-093-5519, 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
STSPB315
NSN: 4730-00-093-5519
NIINs: 000935519, 001764474, 002391146, 004328514, 004595047, 013322429, 015528711, 016008658
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
style_designatorFLARELESS W/ BULKHEAD THREADS
nominal_overall_length2.227 INCHES IN
end_item_identificationC-5A AIRCRAFT A
part_name_assigned_by_controlling_agencyUNION-FLARELESS,STANDARD AND REDUCER,BULKHEAD UNIVERSAL,REDUCED ENVELOPE
NSN4730-00-093-5519
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: STSPB315 · 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 7
ER315-0604Reference document
Same NSN cross-reference
Reference document — Secondary reference
DLG315F0604Reference document
Same NSN cross-reference
Reference document — Secondary reference
4671143F0604Reference document
Same NSN cross-reference
Reference document — Secondary reference
STSPB315F0604Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
PF315F0604Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GA7444F0604Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is STSPB315?
STSPB315 is a NIPPLE,TUBE.
What parts can replace STSPB315?
There are 7 known substitutes for STSPB315: ER315-0604, DLG315F0604, 4671143F0604 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for STSPB315?
STSPB315 is cataloged in the U.S. Government catalog under NSN 4730-00-093-5519. 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.