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Technical Data Sheet
S3951 ✓ 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

The VALVE ASSY is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, bore_diameter: 1.0020 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN, outside_diameter: 1.938 INCHES NOMINAL IN, style_designator: PLAIN ROUND, nominal_thread_size: 0.250 INCHES SINGLE HOLE IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-275-7018, 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
S3951
NSN: 3040-00-275-7018
FSC: 3040
CAGE: 05643 — BARBER-GREENE CO (USA)
SPECIFICATIONS
materialSTEEL
thickness0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
bore_diameter1.0020 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
outside_diameter1.938 INCHES NOMINAL IN
style_designatorPLAIN ROUND
nominal_thread_size0.250 INCHES SINGLE HOLE IN
securing_hole_quantity1
furnished_items_and_quantity1 SETSCREW
securing_hole_type_and_locationTHREADED SINGLE HOLE
screw_thread_series_designator_and_locationSINGLE HOLE UNIFIED NATIONAL COARSE (UNC)
NSN3040-00-275-7018
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE ASSY TITLE COMPONENT PN S3951 MFR VALVE ASSY
KEY FEATURES
THICKNESS: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
STYLE DESIGNATOR: PLAIN ROUND
FURNISHED ITEMS AND QUANTITY: 1 SETSCREW
SECURING HOLE TYPE AND LOCATION: THREADED SINGLE HOLE
NOMINAL THREAD SIZE: 0.250 INCHES SINGLE HOLE IN
MATERIAL: STEEL
SECURING HOLE QUANTITY: 1
BORE DIAMETER: 1.0020 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN ROUND
FURNISHED ITEMS AND QUANTITY1 SETSCREW
SECURING HOLE TYPE AND LOCATIONTHREADED SINGLE HOLE
NOMINAL THREAD SIZE0.250 INCHES SINGLE HOLE IN
MATERIALSTEEL
SECURING HOLE QUANTITY1
BORE DIAMETER1.0020 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
SCREW THREAD SERIES DESIGNATOR AND LOCATIONSINGLE HOLE UNIFIED NATIONAL COARSE (UNC)
OUTSIDE DIAMETER1.938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
APS580Interchangeable
interchangeable cross-reference
interchangeable
S3951Interchangeable
interchangeable cross-reference
interchangeable
80830Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S3951?
S3951 is a VALVE ASSY.
What parts can replace S3951?
There are 3 known substitutes for S3951: APS580, S3951, 80830. Substitute compatibility should be verified for your specific system.
What is the NSN for S3951?
S3951 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-275-7018. This indicates validated use in U.S. government and defense supply chains.
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