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Technical Data Sheet
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PM74 ✓ 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: MACHINED HALF LOOP BOTH ENDS, design_type: CLOSED, hook_radius: 0.202 INCHES NOMINAL BOTH ENDS IN, coil_quantity: 18, opening_width: 0.125 INCHES NOMINAL BOTH ENDS IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-224-8188, 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
PM74
NSN: 5360-00-224-8188
FSC: 5360
CAGE: 66289 — WISCONSIN MOTORS, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleMACHINED HALF LOOP BOTH ENDS
design_typeCLOSED
hook_radius0.202 INCHES NOMINAL BOTH ENDS IN
coil_quantity18
opening_width0.125 INCHES NOMINAL BOTH ENDS IN
inside_diameter0.414 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length1.639 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_deflection_rate6.600 POUNDS PER INCH NOMINAL LBS
spring_free_outside_diameter0.522 INCHES NOMINAL IN
NSN5360-00-224-8188
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN PM74 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING DEFLECTION RATE: 6.600 POUNDS PER INCH NOMINAL LBS
•
END STYLE: MACHINED HALF LOOP BOTH ENDS
•
OPENING WIDTH: 0.125 INCHES NOMINAL BOTH ENDS IN
•
SPRING FREE OUTSIDE DIAMETER: 0.522 INCHES NOMINAL IN
•
SPRING FREE LENGTH: 1.639 INCHES NOMINAL IN
•
COIL QUANTITY: 18
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
SPRING DEFLECTION RATE6.600 POUNDS PER INCH NOMINAL LBS
END STYLEMACHINED HALF LOOP BOTH ENDS
OPENING WIDTH0.125 INCHES NOMINAL BOTH ENDS IN
SPRING FREE OUTSIDE DIAMETER0.522 INCHES NOMINAL IN
SPRING FREE LENGTH1.639 INCHES NOMINAL IN
COIL QUANTITY18
COIL HELIX DIRECTIONRIGHT-HAND
HOOK RADIUS0.202 INCHES NOMINAL BOTH ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
8-590Interchangeable
interchangeable cross-reference
interchangeable
Q72178-1Interchangeable
interchangeable cross-reference
interchangeable
JAN8590Interchangeable
interchangeable cross-reference
interchangeable
MILE1-1670Interchangeable
interchangeable cross-reference
interchangeable
99142509Interchangeable
interchangeable cross-reference
interchangeable
1321-516Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PM74?
PM74 is a SPRING,HELICAL,EXTENSION.
What parts can replace PM74?
There are 20 known substitutes for PM74: 8-590, Q72178-1, JAN8590 and 17 more. Substitute compatibility should be verified for your specific system.
Is PM74 still available?
PM74 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