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R310P58 ✓ 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 INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_radius: 0.475 INCHES NOMINAL IN, thread_size: 3/4-16, thread_class: 3A A, overall_length: 0.906 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, COMPRESSION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-045-6400, 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
R310P58
NSN: 4730-01-045-6400
FSC: 4730
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_radius0.475 INCHES NOMINAL IN
thread_size3/4-16
thread_class3A A
overall_length0.906 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, COMPRESSION
thread_directionRIGHT-HAND
width_across_flats0.803 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.425 INCHES NOMINAL IN
screw_thread_series_designatorUNF
tube_outside_diameter_for_which_designed0.475 INCHES NOMINAL IN
NSN4730-01-045-6400
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R310P58 · 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
•
SCREW THREAD SERIES DESIGNATOR: UNF
•
SMALLEST INSIDE DIAMETER: 0.425 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.475 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.803 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, COMPRESSION
•
SEAT RADIUS: 0.475 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.906 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNF
SMALLEST INSIDE DIAMETER0.425 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.475 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.803 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
STYLE DESIGNATORINVERTED NUT, TUBE, COMPRESSION
SEAT RADIUS0.475 INCHES NOMINAL IN
THREAD SIZE3/4-16
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
R310Interchangeable
interchangeable cross-reference
interchangeable
AR310Interchangeable
interchangeable cross-reference
interchangeable
F123Interchangeable
interchangeable cross-reference
interchangeable
CS5716395Interchangeable
interchangeable cross-reference
interchangeable
514501K51Interchangeable
interchangeable cross-reference
interchangeable
292144P1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R310P58?
R310P58 is a INVERTED NUT,TUBE COUPLING.
What parts can replace R310P58?
There are 7 known substitutes for R310P58: R310, AR310, F123 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R310P58?
R310P58 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-045-6400. 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