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Technical Data Sheet
PartsTable / COMPONENT / 59T-2
59T-2 ✓ 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 THREAD PIECE,UNION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_type: STRAIGHT FACE, thread_size: 0.750-16, overall_length: 1.688 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_connection_type: THREADED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-449-6400, 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
59T-2
NSN: 5330-00-449-6400
FSC: 5330
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_typeSTRAIGHT FACE
thread_size0.750-16
overall_length1.688 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_connection_typeTHREADED
screw_thread_locationEXTERNAL
union_end_thread_size1.37-12
union_end_thread_directionRIGHT-HAND
screw_thread_series_designatorUNF
working_pressure_and_service_type3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL HYDRAULIC OIL LBS
union_end_screw_thread_series_designatorUNF
NSN5330-00-449-6400
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 59T-2 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
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 3.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
CROSS-SECTIONAL THICKNESS: 0.010 INCHES NOMINAL IN
•
INSIDE CORNER INVERTED RADIUS: 0.375 INCHES NOMINAL IN
•
APERTURE WIDTH: 3.688 INCHES NOMINAL IN
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH: 0.500 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH3.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CROSS-SECTIONAL THICKNESS0.010 INCHES NOMINAL IN
INSIDE CORNER INVERTED RADIUS0.375 INCHES NOMINAL IN
OVERALL WIDTH4.438 INCHES NOMINAL IN
APERTURE WIDTH3.688 INCHES NOMINAL IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.500 INCHES NOMINAL IN
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH5.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL LENGTH6.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
506.3750Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
21343Interchangeable
interchangeable cross-reference
interchangeable
7024360Interchangeable
interchangeable cross-reference
interchangeable
310-245RInterchangeable
interchangeable cross-reference
interchangeable
F45-32RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 59T-2?
59T-2 is a THREAD PIECE,UNION.
What parts can replace 59T-2?
There are 28 known substitutes for 59T-2: 506.3750, GGG-R-180, 21343 and 25 more. Substitute compatibility should be verified for your specific system.
Is 59T-2 still available?
59T-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026