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PartsTable / COMPONENT / 404434
404434 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: COPPER ALLOY BODY, body_style: STRAIGHT THRU, body_width: 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN, body_height: 0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, body_length: 2.030 INCHES MINIMUM AND 2.070 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-158-3807, 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
404434
NSN: 5340-00-158-3807
FSC: 5340
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialCOPPER ALLOY BODY
body_styleSTRAIGHT THRU
body_width0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
body_height0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
body_length2.030 INCHES MINIMUM AND 2.070 INCHES MAXIMUM IN
chain_length9.0000 INCHES NOMINAL IN
constructionLAMINATED
overall_width1.6500 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN
overall_height3.3750 INCHES NOMINAL IN
regulation_typeMANUAL SINGLE STAGE
special_featuresWITH 2 KEYS PER LOCK W/KEY RETAINING FEATURES; INCLUDES CHAIN ATTACHED
NSN5340-00-158-3807
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 404434 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
•
NONDEFINITIVE SPEC/STD DATA: A TYPE AND A STYLE AND 1 CLASS AND 2 GRADE
•
OVERALL THICKNESS: 0.6880 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CHAIN LENGTH: 9.0000 INCHES NOMINAL IN
•
COMBINATION QUANTITY: 100000
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH1.6500 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAA TYPE AND A STYLE AND 1 CLASS AND 2 GRADE
SPECIAL FEATURESWITH 2 KEYS PER LOCK W/KEY RETAINING FEATURES; INCLUDES CHAIN ATTACHED
OVERALL THICKNESS0.6880 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
END ITEM IDENTIFICATIONMRAP - M-ATV UI
CHAIN LENGTH9.0000 INCHES NOMINAL IN
COMBINATION QUANTITY100000
OVERALL HEIGHT3.3750 INCHES NOMINAL IN
KEY CHANGE QUANTITY10000
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
A-A-59487Upgraded Successor
successor cross-reference
successor
A-A-59486Upgraded Successor
successor cross-reference
successor
A-A-59487-2SSUpgraded Successor
successor cross-reference
successor
AA59486-2AS06S0E2SUpgraded Successor
successor cross-reference
successor
AA59486-2AS05S0E2SUpgraded Successor
successor cross-reference
successor
AA59486-2AS04S0E2SUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 404434?
404434 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 404434?
There are 25 known substitutes for 404434: A-A-59487, A-A-59486, A-A-59487-2SS and 22 more. Substitute compatibility should be verified for your specific system.
Is 404434 still available?
404434 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