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4259801 — STEM,FLUID VALVE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4259801: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, first_leg_angle: 90.0 DEGREES NOMINAL, first_leg_style: SQUARE, first_leg_width: 0.500 INCHES NOMINAL IN, first_leg_length: 0.3755 INCHES NOMINAL IN, second_leg_angle: 90.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-311-0020, 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
4259801
NSN: 5340-01-311-0020
NIINs: 013110020, 013460702
FSC: 5340 — Hardware, Commercial
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialCOPPER ALLOY
first_leg_angle90.0 DEGREES NOMINAL
first_leg_styleSQUARE
first_leg_width0.500 INCHES NOMINAL IN
first_leg_length0.3755 INCHES NOMINAL IN
second_leg_angle90.0 DEGREES NOMINAL
second_leg_styleSQUARE
second_leg_width0.500 INCHES NOMINAL IN
style_designatorADJACENT ANGLES
second_leg_length0.875 INCHES NOMINAL IN
mounting_hole_typePLAIN
first_leg_thickness0.063 INCHES NOMINAL IN
NSN5340-01-311-0020
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4259801 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
•
SECOND LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH: 0.3125 INCHES NOMINAL IN
•
FIRST LEG ANGLE: 90.0 DEGREES NOMINAL
•
CENTER SECTION THICKNESS: 0.063 INCHES NOMINAL IN
•
SECOND LEG RELATIONSHIP TO FIRST LEG: NOT IDENTICAL
•
SECOND LEG ANGLE: 90.0 DEGREES NOMINAL
•
SECOND LEG WIDTH: 0.500 INCHES NOMINAL IN
•
SECOND LEG LENGTH: 0.875 INCHES NOMINAL IN
•
SECOND LEG SLOT WIDTH: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SECOND LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH0.3125 INCHES NOMINAL IN
FIRST LEG ANGLE90.0 DEGREES NOMINAL
CENTER SECTION THICKNESS0.063 INCHES NOMINAL IN
SECOND LEG RELATIONSHIP TO FIRST LEGNOT IDENTICAL
SECOND LEG ANGLE90.0 DEGREES NOMINAL
SECOND LEG WIDTH0.500 INCHES NOMINAL IN
SECOND LEG LENGTH0.875 INCHES NOMINAL IN
SECOND LEG SLOT WIDTH0.188 INCHES NOMINAL IN
FIRST LEG HOLE ARRANGEMENT STYLENO HOLE
SECOND LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG WIDTH0.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4259801?
4259801 is a STEM,FLUID VALVE.
What is the NSN for 4259801?
4259801 is cataloged in the U.S. Government catalog under NSN 5340-01-311-0020. This indicates validated use in U.S. government and defense supply chains.
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