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Technical Data Sheet
450188 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thread_size: 5/16-24, thread_class: 2A A, overall_length: 0.469 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, FLARE, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-236-1213, 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
450188
NSN: 5330-00-236-1213
FSC: 5330
CAGE: 11132 — REMCO HYDRAULICS INC SIERRA CYLINDERS PRODUCT LINE (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_size5/16-24
thread_class2A A
overall_length0.469 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg45.00
width_across_flats0.375 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.156 INCHES NOMINAL IN
screw_thread_series_designatorUNF
tube_outside_diameter_for_which_designed0.156 INCHES NOMINAL IN
NSN5330-00-236-1213
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 450188 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
MATERIAL: COTTON AND RUBBER CHLOROPRENE CLASS CR INTERMEDIATE RING
OUTSIDE DIAMETER: 4.000 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN
INSIDE DIAMETER: 3.495 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: U INTERMEDIATE RING
MATERIAL DOCUMENT AND CLASSIFICATION: NEO-FAB FSCM 96779 MFR REF SINGLE MATERIAL RESPONSE INTERMEDIATE RING
HEIGHT: 0.703 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOTTON AND RUBBER CHLOROPRENE CLASS CR INTERMEDIATE RING
MATERIALCOTTON OR RUBBER SYNTHETIC BOTTOM RING
OUTSIDE DIAMETER4.000 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN
INSIDE DIAMETER3.495 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEU INTERMEDIATE RING
MATERIAL DOCUMENT AND CLASSIFICATIONNEO-FAB FSCM 96779 MFR REF SINGLE MATERIAL RESPONSE INTERMEDIATE RING
MATERIALCOTTON AND RUBBER CHLOROPRENE CLASS CR TOP RING
HEIGHT0.703 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONNEO-FAB FSCM 96779 MFR REF SINGLE MATERIAL RESPONSE TOP RING
INTERMEDIATE RING QUANTITY3
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
49858Interchangeable
interchangeable cross-reference
interchangeable
K8685864Interchangeable
interchangeable cross-reference
interchangeable
B-1371Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 450188?
450188 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 450188?
There are 3 known substitutes for 450188: 49858, K8685864, B-1371. Substitute compatibility should be verified for your specific system.
What is the NSN for 450188?
450188 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-236-1213. This indicates validated use in U.S. government and defense supply chains.
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