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PartsTable / COMPONENT / B851173 PIECE 13
B851173 PIECE 13 ✓ 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 ADAPTER BUSHING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, end_item_identification: STOP-CHECK VALVE,3 IN.,600 LB LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-291-5319, 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
B851173 PIECE 13
NSN: 4730-01-291-5319
FSC: 4730
CAGE: 06546 — BEE LINE COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
end_item_identificationSTOP-CHECK VALVE,3 IN.,600 LB LBS
NSN4730-01-291-5319
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B851173 PIECE 13 · 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
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
END ITEM IDENTIFICATIONSTOP-CHECK VALVE,3 IN.,600 LB LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
B51173Interchangeable
interchangeable cross-reference
interchangeable
B851173Interchangeable
interchangeable cross-reference
interchangeable
51173Interchangeable
interchangeable cross-reference
interchangeable
A841102-2Interchangeable
interchangeable cross-reference
interchangeable
B851173 PIECE 2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B851173 PIECE 13?
B851173 PIECE 13 is a ADAPTER BUSHING.
What parts can replace B851173 PIECE 13?
There are 5 known substitutes for B851173 PIECE 13: B51173, B851173, 51173 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B851173 PIECE 13?
B851173 PIECE 13 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-291-5319. 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