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Technical Data Sheet
PM21837 ✓ 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 SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: FULL LOOP BOTH ENDS, design_type: OPEN, hook_radius: 0.073 INCHES NOMINAL BOTH ENDS IN, coil_quantity: 12, inside_diameter: 0.147 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 5360-00-105-4344, 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
PM21837
NSN: 5360-00-105-4344
FSC: 5360
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleFULL LOOP BOTH ENDS
design_typeOPEN
hook_radius0.073 INCHES NOMINAL BOTH ENDS IN
coil_quantity12
inside_diameter0.147 INCHES NOMINAL IN
style_designatorCYLINDRICAL
surface_treatmentCADMIUM OVERALL
spring_free_length0.818 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_free_outside_diameter0.195 INCHES NOMINAL IN
NSN5360-00-105-4344
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN PM21837 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
SPRING FREE OUTSIDE DIAMETER: 0.195 INCHES NOMINAL IN
COIL HELIX DIRECTION: RIGHT-HAND OR LEFT-HAND
INSIDE DIAMETER: 0.147 INCHES NOMINAL IN
MATERIAL: STEEL OVERALL
SURFACE TREATMENT: CADMIUM OVERALL
SPRING FREE LENGTH: 0.818 INCHES NOMINAL IN
DESIGN TYPE: OPEN
COIL QUANTITY: 12
TECHNICAL CHARACTERISTICS (FLIS)
SPRING FREE OUTSIDE DIAMETER0.195 INCHES NOMINAL IN
COIL HELIX DIRECTIONRIGHT-HAND OR LEFT-HAND
INSIDE DIAMETER0.147 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SPRING FREE LENGTH0.818 INCHES NOMINAL IN
DESIGN TYPEOPEN
COIL QUANTITY12
END STYLEFULL LOOP BOTH ENDS
HOOK RADIUS0.073 INCHES NOMINAL BOTH ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
239916Interchangeable
interchangeable cross-reference
interchangeable
5A6711Interchangeable
interchangeable cross-reference
interchangeable
5990E5014Interchangeable
interchangeable cross-reference
interchangeable
9487Interchangeable
interchangeable cross-reference
interchangeable
A5388CInterchangeable
interchangeable cross-reference
interchangeable
21837Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PM21837?
PM21837 is a SPRING,HELICAL,EXTENSION.
What parts can replace PM21837?
There are 8 known substitutes for PM21837: 239916, 5A6711, 5990E5014 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PM21837?
PM21837 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-105-4344. This indicates validated use in U.S. government and defense supply chains.
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