PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

640001P21Clip,spring Tension

Atlee of Delaware, Incorporated · NSN 5340-00-883-6387 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-883-6387 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-883-6387. Primary manufacturer part number: 640001P21.
Features
  • Clip,spring Tension — FSC 5340
  • Width: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Loop/holding Dimension: 0.312 INCHES NOMINAL IN
  • Material: COPPER ALLOY OVERALL
  • Hole Diameter: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Length: 0.330 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
  • Distance From Loop Center to End: 0.200 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
  • Material Thickness: 0.016 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Copper Alloy Overall construction
General Description

The Clip,spring Tension, cataloged under National Stock Number 5340-00-883-6387, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Atlee of Delaware, Incorporated. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-883-6387
Primary Part Number640001P21
Item NameClip,spring Tension
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerAtlee of Delaware, Incorporated
StatusACTIVE
Width0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Loop/holding Dimension0.312 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Hole Diameter0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Length0.330 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
Distance From Loop Center to End0.200 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Material Thickness0.016 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 9
5935-00-164-1668L01018 INTERCHANGEABLE
Connector,receptacle,electrical
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
3930-00-175-0084 INTERCHANGEABLE
Cylinder Assy
5940-00-271-9920627-144 INTERCHANGEABLE
Terminal,lug
Zierick Mfg Corp
3040-00-320-9308 INTERCHANGEABLE
Cylinder Assembly,actuating,line
4510-00-483-0957 INTERCHANGEABLE
Drain,lavatory
5821-00-496-9641640503 INTERCHANGEABLE
Cover
Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
2520-00-734-82867348286 INTERCHANGEABLE
Lever
U S Army Tank Automotive Command Amsta-Im-Mm
6210-01-422-35626276 INTERCHANGEABLE
Light,indicator
Edro Corporation, the Dba Edro Corp
5325-01-440-02906276 INTERCHANGEABLE
Grommet,nonmetallic
Cooper Bussmann, Llc Dba Cooper Industries
Cross-Reference Index
Part NumberManufacturer
6009-40C Te Connectivity Corporation (USA)
640001P21 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
640001P21 PRIMARY Atlee of Delaware, Incorporated (USA)
6276 Lockheed Martin Corporation (USA)
100-300-5-7 Atlee of Delaware, Incorporated (USA)
6276 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
640001P21 PRIMARY Seastrom Manufacturing Co Inc (USA)
Related Parts
5935-00-164-1668INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
L01018
3930-00-175-0084INTERCHANGEABLE
CYLINDER ASSY
5940-00-271-9920INTERCHANGEABLE
TERMINAL,LUG
627-144
3040-00-320-9308INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
4510-00-483-0957INTERCHANGEABLE
DRAIN,LAVATORY
5821-00-496-9641INTERCHANGEABLE
COVER
640503
2520-00-734-8286INTERCHANGEABLE
LEVER
7348286
6210-01-422-3562INTERCHANGEABLE
LIGHT,INDICATOR
6276
5325-01-440-0290INTERCHANGEABLE
GROMMET,NONMETALLIC
6276

Frequently Asked Questions

What is NSN 5340-00-883-6387?

NSN 5340-00-883-6387 is a Clip,spring Tension, manufactured by Atlee of Delaware, Incorporated, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-883-6387?

NSN 5340-00-883-6387 has 7 cross-referenced part numbers: 6009-40C (Te Connectivity Corporation), 640001P21 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 640001P21 (Atlee of Delaware, Incorporated), 6276 (Lockheed Martin Corporation), 100-300-5-7 (Atlee of Delaware, Incorporated) and 2 more.

What NSN replaces 5340-00-883-6387?

There are 9 known substitutes for 5340-00-883-6387: 5935-00-164-1668, 3930-00-175-0084, 5940-00-271-9920 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 640001P21?

Key specifications for 640001P21: Width: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Loop/holding Dimension: 0.312 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL; Hole Diameter: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. 9 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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