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Technical Data Sheet
20SA ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RETAINER,ELECTRON TUBE is a the manufacturer industrial component. Key specifications include shape: ROUND, length: 14.000 INCHES NOMINAL IN, material: COPPER ALLOY FILLER, current_type: DC, physical_form: STRAIGHT, outside_diameter: 0.156 INCHES NOMINAL 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 3439-00-247-5159, 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
20SA
NSN: 3439-00-247-5159
FSC: 3439
CAGE: 00741 — MESSER LLC (USA)
SPECIFICATIONS
shapeROUND
length14.000 INCHES NOMINAL IN
materialCOPPER ALLOY FILLER
current_typeDC
physical_formSTRAIGHT
outside_diameter0.156 INCHES NOMINAL IN
flux_coating_typeSHIELDED ARC
polarity_characteristicREVERSE
nondefinitive_spec/std_dataMIL-ECUSN-A CLASS AND 5/32 SIZE
weld_position_for_which_designedALL POSITIONS
material_document_and_classificationMIL-E-13191,CL ECUSN-A MIL SPEC SINGLE MATERIAL RESPONSE FILLER
NSN3439-00-247-5159
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,ELECTRON TUBE TITLE COMPONENT PN 20SA MFR RETAINER,ELECTRON TUBE
KEY FEATURES
NONDEFINITIVE SPEC/STD DATA: MIL-ECUSN-A CLASS AND 5/32 SIZE
CURRENT TYPE: DC
SHAPE: ROUND
PHYSICAL FORM: STRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-E-13191,CL ECUSN-A MIL SPEC SINGLE MATERIAL RESPONSE FILLER
LENGTH: 14.000 INCHES NOMINAL IN
POLARITY CHARACTERISTIC: REVERSE
FLUX COATING TYPE: SHIELDED ARC
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATAMIL-ECUSN-A CLASS AND 5/32 SIZE
CURRENT TYPEDC
SHAPEROUND
PHYSICAL FORMSTRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-E-13191,CL ECUSN-A MIL SPEC SINGLE MATERIAL RESPONSE FILLER
LENGTH14.000 INCHES NOMINAL IN
POLARITY CHARACTERISTICREVERSE
FLUX COATING TYPESHIELDED ARC
WELD POSITION FOR WHICH DESIGNEDALL POSITIONS
MATERIALCOPPER ALLOY FILLER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
A38HYTInterchangeable
interchangeable cross-reference
interchangeable
A38Interchangeable
interchangeable cross-reference
interchangeable
20BInterchangeable
interchangeable cross-reference
interchangeable
20TAInterchangeable
interchangeable cross-reference
interchangeable
AWSA5.6-79 CL ECUSN-A 0.125Interchangeable
interchangeable cross-reference
interchangeable
AWS A5.6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20SA?
20SA is a RETAINER,ELECTRON TUBE.
What parts can replace 20SA?
There are 18 known substitutes for 20SA: A38HYT, A38, 20B and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20SA?
20SA is cataloged in the Federal Logistics Information System (FLIS) under NSN 3439-00-247-5159. This indicates validated use in U.S. government and defense supply chains.
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