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Technical Data Sheet
PartsTable / COMPONENT / SC-B-70303
SC-B-70303 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

VALVE ASSEMBLY,HYDRAULIC,AIRCRAF. Key specifications include material: STEEL, thickness: 0.510 INCHES NOMINAL IN, bore_diameter: 0.6880 INCHES NOMINAL IN, outside_diameter: 1.375 INCHES NOMINAL IN, special_features: THREADED BORE 0.688-24 UNEF, style_designator: ROUND, SINGLE BOLT SECURED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-569-0330, 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
SC-B-70303
NSN: 3040-00-569-0330
FSC: 3040
CAGE: 82423 — KLEINSCHMIDT INC (USA)
SPECIFICATIONS
materialSTEEL
thickness0.510 INCHES NOMINAL IN
bore_diameter0.6880 INCHES NOMINAL IN
outside_diameter1.375 INCHES NOMINAL IN
special_featuresTHREADED BORE 0.688-24 UNEF
style_designatorROUND, SINGLE BOLT SECURED
surface_treatmentPHOSPHATE
nominal_thread_size0.164 INCHES IN
plain_hole_diameter0.1700 INCHES NOMINAL IN
clamp_securing_hole_styleTHREADED
screw_thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN3040-00-569-0330
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE ASSEMBLY,HYDRAULIC,AIRCRAF TITLE COMPONENT PN SC-B-70303 MFR VALVE ASSEMBLY,HYDRAUL
KEY FEATURES
•
OUTSIDE DIAMETER: 1.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, SINGLE BOLT SECURED
•
MATERIAL: STEEL
•
SURFACE TREATMENT: PHOSPHATE
•
THICKNESS: 0.510 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
BORE DIAMETER: 0.6880 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
STYLE DESIGNATORROUND, SINGLE BOLT SECURED
MATERIALSTEEL
SURFACE TREATMENTPHOSPHATE
THICKNESS0.510 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES IN
BORE DIAMETER0.6880 INCHES NOMINAL IN
SPECIAL FEATURESTHREADED BORE 0.688-24 UNEF
SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
CLAMP SECURING HOLE STYLETHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
SE-3Interchangeable
interchangeable cross-reference
interchangeable
12-20Q-MInterchangeable
interchangeable cross-reference
interchangeable
E-121Interchangeable
interchangeable cross-reference
interchangeable
51697Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SC-B-70303?
SC-B-70303 is a VALVE ASSEMBLY,HYDRAULIC,AIRCRAF.
What parts can replace SC-B-70303?
There are 4 known substitutes for SC-B-70303: SE-3, 12-20Q-M, E-121 and 1 more. Substitute compatibility should be verified for your specific system.
Is SC-B-70303 still available?
SC-B-70303 is currently cancelled.
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Last verified: July 2026