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SMB186994 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

SMB186994: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: MACHINED HALF LOOP SECOND END, design_type: OPEN, hook_radius: 0.073 INCHES MAXIMUM SECOND END IN, opening_width: 0.125 INCHES NOMINAL SECOND END IN, inside_diameter: 0.147 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-664-2151, 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
SMB186994
NSN: 5360-00-664-2151
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleMACHINED HALF LOOP SECOND END
design_typeOPEN
hook_radius0.073 INCHES MAXIMUM SECOND END IN
coil_quantity8
opening_width0.125 INCHES NOMINAL SECOND END IN
inside_diameter0.147 INCHES NOMINAL IN
special_featuresCORROSION RESISTANT STEEL
style_designatorCYLINDRICAL
spring_free_length0.487 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_free_outside_diameter0.172 INCHES NOMINAL IN
NSN5360-00-664-2151
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN SMB186994 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.172 INCHES NOMINAL IN
•
END STYLE: DOUBLE TWIST LOOP FIRST END
•
DESIGN TYPE: OPEN
•
STYLE DESIGNATOR: CYLINDRICAL
•
OPENING WIDTH: 0.125 INCHES NOMINAL SECOND END IN
•
SPRING FREE LENGTH: 0.487 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.147 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.172 INCHES NOMINAL IN
END STYLEDOUBLE TWIST LOOP FIRST END
END STYLEMACHINED HALF LOOP SECOND END
DESIGN TYPEOPEN
STYLE DESIGNATORCYLINDRICAL
OPENING WIDTH0.125 INCHES NOMINAL SECOND END IN
SPRING FREE LENGTH0.487 INCHES NOMINAL IN
INSIDE DIAMETER0.147 INCHES NOMINAL IN
COIL QUANTITY8
SPECIAL FEATURESCORROSION RESISTANT STEEL
SUBSTITUTES & CROSS-REFERENCES 1
54948Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SMB186994?
SMB186994 is a SPRING,HELICAL,EXTENSION.
What parts can replace SMB186994?
There is 1 known substitute for SMB186994: 54948. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB186994?
SMB186994 is cataloged in the U.S. Government catalog under NSN 5360-00-664-2151. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.