PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

U126420050Spring,helical,torsion

U S Repeating Arms Co · NSN 5360-00-805-3489 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-805-3489 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-805-3489. Primary manufacturer part number: U126420050.
Features
  • Spring,helical,torsion — FSC 5360
  • End Length From First Bend to Second Bend or End: 0.125 INCHES NOMINAL SECOND END IN
  • Spring Free Length: 0.060 INCHES NOMINAL IN
  • Coil Quantity: 1
  • End Length: 0.688 INCHES NOMINAL FIRST END IN
  • End Angular Relationship: ENDS PARALLEL ONE TO OTHER
  • Material: STEEL OVERALL
  • Style Designator: SINGLE TORSION LEFT HAND
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,torsion, cataloged under National Stock Number 5360-00-805-3489, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Repeating Arms Co. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-805-3489
Primary Part NumberU126420050
Item NameSpring,helical,torsion
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerU S Repeating Arms Co
StatusACTIVE
End Length From First Bend to Second Bend or End0.125 INCHES NOMINAL SECOND END IN
Spring Free Length0.060 INCHES NOMINAL IN
Coil Quantity1
End Length0.688 INCHES NOMINAL FIRST END IN
End Angular RelationshipENDS PARALLEL ONE TO OTHER
MaterialSTEEL OVERALL
Style DesignatorSINGLE TORSION LEFT HAND
Coil Helix DirectionRIGHT-HAND
End StyleANGULAR END (LEFT) SECOND END
Spring Free Outside Diameter0.202 INCHES NOMINAL IN
Inside Diameter0.140 INCHES NOMINAL IN
End StyleONE HOOK END FIRST END
End Length0.937 INCHES NOMINAL SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5999-00-702-3709327C694H11REVF INTERCHANGEABLE
Wire Mesh,knitted
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5945-00-775-907121-102 INTERCHANGEABLE
Relay,hybrid
Te Connectivity Corporation
5355-00-948-5455SMB552131-2 INTERCHANGEABLE
Knob
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6515-01-140-512612-0003 INTERCHANGEABLE
Hook Skin 2-Prong
Biomet Microfixation, Llc Div Biomet Microfixation
5975-01-166-6539 INTERCHANGEABLE
Tee,electrical Conduit
5895-01-377-71051219739-207 INTERCHANGEABLE
Modem,communications
Lockheed Martin Corporation Div Rms - Mitchel Field
7530-01-424-918321102 INTERCHANGEABLE
Book,appointment
Franklin Covey Co Government Group Products
6520-01-469-604621102 INTERCHANGEABLE
Paste,preventive Dentistry
Sultan Chemists Inc
6550-01-547-0119 INTERCHANGEABLE
Test Kit,potassium and Sodium De
Cross-Reference Index
Part NumberManufacturer
U126420050 U S Repeating Arms Co (USA)
6420A0050 U S Repeating Arms Co (USA)
21102 U S Repeating Arms Co (USA)
Related Parts
5999-00-702-3709INTERCHANGEABLE
WIRE MESH,KNITTED
327C694H11REVF
5945-00-775-9071INTERCHANGEABLE
RELAY,HYBRID
21-102
5355-00-948-5455INTERCHANGEABLE
KNOB
SMB552131-2
6515-01-140-5126INTERCHANGEABLE
HOOK SKIN 2-PRONG
12-0003
5975-01-166-6539INTERCHANGEABLE
TEE,ELECTRICAL CONDUIT
5895-01-377-7105INTERCHANGEABLE
MODEM,COMMUNICATIONS
1219739-207
7530-01-424-9183INTERCHANGEABLE
BOOK,APPOINTMENT
21102
6520-01-469-6046INTERCHANGEABLE
PASTE,PREVENTIVE DENTISTRY
21102
6550-01-547-0119INTERCHANGEABLE
TEST KIT,POTASSIUM AND SODIUM DE

Frequently Asked Questions

What is NSN 5360-00-805-3489?

NSN 5360-00-805-3489 is a Spring,helical,torsion, manufactured by U S Repeating Arms Co, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-805-3489?

NSN 5360-00-805-3489 has 3 cross-referenced part numbers: U126420050 (U S Repeating Arms Co), 6420A0050 (U S Repeating Arms Co), 21102 (U S Repeating Arms Co).

What NSN replaces 5360-00-805-3489?

There are 9 known substitutes for 5360-00-805-3489: 5999-00-702-3709, 5945-00-775-9071, 5355-00-948-5455 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of U126420050?

Key specifications for U126420050: End Length From First Bend to Second Bend or End: 0.125 INCHES NOMINAL SECOND END IN; Spring Free Length: 0.060 INCHES NOMINAL IN; Coil Quantity: 1; End Length: 0.688 INCHES NOMINAL FIRST END IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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