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Technical Data Sheet
PartsTable / COMPONENT / 20309-PC25
20309-PC25 ✓ 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, overall_length: 0.312 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED, end_item_identification: 23N SHIP, OHIO CLASS SSN (TRIDENT), smallest_inside_diameter: 0.516 INCHES NOMINAL IN, major_unthreaded_outside_diameter: 1.046 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-091-1471, 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
20309-PC25
NSN: 4730-01-091-1471
FSC: 4730
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialSTEEL COMP 303
overall_length0.312 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
end_item_identification23N SHIP, OHIO CLASS SSN (TRIDENT)
smallest_inside_diameter0.516 INCHES NOMINAL IN
major_unthreaded_outside_diameter1.046 INCHES NOMINAL IN
NSN4730-01-091-1471
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20309-PC25 · 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
•
MAJOR UNTHREADED OUTSIDE DIAMETER: 1.046 INCHES NOMINAL IN
•
SMALLEST INSIDE DIAMETER: 0.516 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 303
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.312 INCHES NOMINAL IN
END ITEM IDENTIFICATION23N SHIP, OHIO CLASS SSN (TRIDENT)
MAJOR UNTHREADED OUTSIDE DIAMETER1.046 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER0.516 INCHES NOMINAL IN
MATERIALSTEEL COMP 303
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
H20309Interchangeable
interchangeable cross-reference
interchangeable
19616Interchangeable
interchangeable cross-reference
interchangeable
19917Interchangeable
interchangeable cross-reference
interchangeable
M2-330-75-1C13Interchangeable
interchangeable cross-reference
interchangeable
10106624Interchangeable
interchangeable cross-reference
interchangeable
20309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20309-PC25?
20309-PC25 is a PACKING NUT.
What parts can replace 20309-PC25?
There are 20 known substitutes for 20309-PC25: H20309, 19616, 19917 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20309-PC25?
20309-PC25 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-091-1471. 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