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PartsTable / COMPONENT / BB58S47-023PC657
BB58S47-023PC657 ✓ 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 PACKING NUT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, thread_size: 0.750-16, thread_class: 3A A, thread_length: 0.313 INCHES NOMINAL IN, overall_length: 0.750 INCHES NOMINAL IN, style_designator: HEXAGON, EXTERNAL THREAD, INVERTED FLARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-274-9209, 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
BB58S47-023PC657
NSN: 4730-00-274-9209
FSC: 4730
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 303
thread_size0.750-16
thread_class3A A
thread_length0.313 INCHES NOMINAL IN
overall_length0.750 INCHES NOMINAL IN
style_designatorHEXAGON, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg65.0
width_across_flats0.750 INCHES NOMINAL IN
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating33.0 ROCKWELL C NOMINAL
NSN4730-00-274-9209
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: BB58S47-023PC657 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: UNF
•
THREAD SIZE: 0.750-16
•
SEAT ANGLE IN DEG: 65.0
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
STYLE DESIGNATOR: HEXAGON, EXTERNAL THREAD, INVERTED FLARE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.750 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNF
THREAD SIZE0.750-16
SEAT ANGLE IN DEG65.0
CASEHARDENING INDICATORNOT CASEHARDENED
STYLE DESIGNATORHEXAGON, EXTERNAL THREAD, INVERTED FLARE
SCREW THREAD LOCATIONEXTERNAL
SMALLEST INSIDE DIAMETER0.266 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
B2001Interchangeable
interchangeable cross-reference
interchangeable
20057Interchangeable
interchangeable cross-reference
interchangeable
2410 57/64Interchangeable
interchangeable cross-reference
interchangeable
C12238Interchangeable
interchangeable cross-reference
interchangeable
110 57/64Interchangeable
interchangeable cross-reference
interchangeable
20057AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB58S47-023PC657?
BB58S47-023PC657 is a PACKING NUT.
What parts can replace BB58S47-023PC657?
There are 28 known substitutes for BB58S47-023PC657: B2001, 20057, 2410 57/64 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB58S47-023PC657?
BB58S47-023PC657 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-274-9209. 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