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S428PCS416 ✓ 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: COPPER ALLOY 509, thread_size: 1-7/16-18, thread_class: 3A A, thread_length: 0.500 INCHES NOMINAL IN, overall_length: 0.875 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 4730-00-200-0485, 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
S428PCS416
NSN: 4730-00-200-0485
FSC: 4730
CAGE: 03670 — TYCO FIRE PRODUCTS LP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 509
thread_size1-7/16-18
thread_class3A A
thread_length0.500 INCHES NOMINAL IN
overall_length0.875 INCHES NOMINAL IN
style_designatorHEXAGON, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg30.0
width_across_flats1.625 INCHES NOMINAL IN
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.987 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
NSN4730-00-200-0485
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S428PCS416 · 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 SIZE: 1-7/16-18
•
SMALLEST INSIDE DIAMETER: 0.987 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
SCREW THREAD LOCATION: EXTERNAL
•
WIDTH ACROSS FLATS: 1.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HEXAGON, EXTERNAL THREAD, INVERTED FLARE
•
MATERIAL: COPPER ALLOY 509
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: UNEF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE1-7/16-18
SMALLEST INSIDE DIAMETER0.987 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
SCREW THREAD LOCATIONEXTERNAL
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
STYLE DESIGNATORHEXAGON, EXTERNAL THREAD, INVERTED FLARE
MATERIALCOPPER ALLOY 509
THREAD LENGTH0.500 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNEF
THREAD CLASS3A A
OVERALL LENGTH0.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SMA587699Interchangeable
interchangeable cross-reference
interchangeable
SMA587699-26Interchangeable
interchangeable cross-reference
interchangeable
S4-16Interchangeable
interchangeable cross-reference
interchangeable
82003-S416Interchangeable
interchangeable cross-reference
interchangeable
S9300-461053Interchangeable
interchangeable cross-reference
interchangeable
S9300-461052 PIECE 15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S428PCS416?
S428PCS416 is a PACKING NUT.
What parts can replace S428PCS416?
There are 7 known substitutes for S428PCS416: SMA587699, SMA587699-26, S4-16 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S428PCS416?
S428PCS416 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-200-0485. 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