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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

EIM030C 04 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Crossover Loops
Finish
Pre-coated with Tin
Material
Music Wire
Total Coils
38.700
Published Stock Code
EIM030C04M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.12
Rate (kg/cm)
0.12
Rate (lb/in)
0.67
Rate (gm/mm)
12.00
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
1.750
Free Length (inch)
0.689
Free Length (mm)
17.500
Free Length - Build Spec (in)
0.69
Free Length Tolerance (cm)
0.05
Free Length Tolerance (in)
0.02
Free Length Tolerance (mm)
0.51
Free Length Tolerance - Build Spec (in)
0.02
Inside Diameter (cm)
0.24
Inside Diameter (in)
0.09
Inside Diameter (mm)
2.39
Outside Diameter (cm)
0.300
Outside Diameter (in)
0.12
Outside Diameter (mm)
3.00
Outside Diameter - Build Spec (in)
0.12
Outside Diameter Tolerance (cm)
0.01
Outside Diameter Tolerance (in)
0.01
Outside Diameter Tolerance (mm)
0.13
Outside Diameter Tolerance - Build Spec (in)
0.01
Rate (gm/cm)
120.00
Rate (kg/mm)
0.01
Rate (N/cm)
1.18
Rate - Build Spec (lb/in)
0.67
Rate Tolerance (gm/cm)
12.00
Rate Tolerance (gm/mm)
1.20
Rate Tolerance (kg/cm)
0.01
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.07
Rate Tolerance (N/cm)
0.12
Rate Tolerance (N/mm)
0.01
Rate Tolerance - Build Spec (lb/in)
0.07
Total Coils - Build Spec
38.75
Wire Diameter (cm)
0.03
Wire Diameter (inch)
0.01
Wire Diameter (mm)
0.30
Wire Diameter - Build Spec (in)
0.01
Material Short Description
MW
Product Series
Instrument Extension Series (metric)
Inside Diameter Tolerance (cm)
Reference
Inside Diameter Tolerance (in)
Reference
Inside Diameter Tolerance (mm)
Reference
Initial Tension - Build Spec. (lb)
0.08
Initial Tension (lb)
0.08
Initial Tension (N)
0.33
Initial Tension (kg)
0.03
Initial Tension (gm)
34.00
Initial Tension Tolerance - Build Spec. (lb)
0.02
Initial Tension Tolerance (lb)
0.02
Initial Tension Tolerance (N)
0.07
Initial Tension Tolerance (kg)
0.01
Initial Tension Tolerance (gm)
6.80
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
0.84
Max Load (lb)
0.84
Max Load (kg)
0.38
Max Load (gm)
381.00
Max Extended Length - Build Spec. (in)
1.82
Max Extended Length (in)
1.82
Max Extended Length (mm)
46.33
Max Extended Length (cm)
4.63
Body Length - Build Spec. (in)
0.48
Body Length (in)
0.48
Body Length (mm)
12.12
Body Length (cm)
1.21
Loop Inside Diameter - Build Spec. (in)
0.09
Loop Inside Diameter (in)
0.09
Loop Inside Diameter (mm)
2.39
Loop Inside Diameter (cm)
0.24
Loop Position
Random
Loop Opening - Build Spec. (in)
0.01
Loop Opening (in)
0.01
Loop Opening (mm)
0.30
Loop Opening (cm)
0.03
Max Load (N)
3.74
Inside Diameter - Build Spec (in)
0.09
Model Code
EIM

Instrument Extension Series (metric)

Precision Springs for Precision Products.

Lee Spring EIM030C 04 M is a precision extension spring from the Instrument Extension Series (metric) series, engineered for applications requiring reliable quality extension springs. This spring features a 3-mm outside diameter (0.118 inch) with 2.39-mm loop inside diameter (0.094 inch) and extends from a free length of 17.5 mm (0.689 inch) to a maximum extended length of 46.33 mm (1.824 inch). Made from Music Wire with a 0.3-mm wire diameter (0.012 inch), the spring delivers a spring rate of 0.118 N/mm (0.674 lb/inch) through its 38.7 total coils with an initial tension of 0.334 N (0.075 lb) for predictable extension behavior. The spring supports a maximum load of 3.737 N (0.84 lb) at full extension with a body length of 12.12 mm (0.477 inch). The spring features Random loop position and Pre-coated with Tin finish for optimal performance.

About the Extension Spring Instrument Series

The Lee Spring Extension Spring Instrument Series includes a wide range of size and rate combinations in a smaller, highly precise spring design. Selections are sorted in ascending order based on outside diameter. Instrument Series Extension Springs are available in both inch and metric sizes. Sizes range from outside diameters from .063" up to .157" and free lengths from .250" to 1.181". Inch Series springs are available in Music Wire, Type 302 Stainless Steel and Type 316 Stainless Steel. Metric Series springs are available in Music Wire and Type 302 Stainless Steel. The Music Wire springs are made from coated wire or provided with a plating finish for light corrosion resistance. The Type 302 Stainless Steel springs are passivated, while Type 316 Stainless Steel springs are passivated and ultrasonically cleaned.

Instrument Extension Series (metric) Extension Springs have useful applications in various industries, including:

  • Medical devices
  • Firearms
  • Pharmaceutical delivery devices
  • Lighting and electrical control
  • Petro-chemical processes
  • Communication devices
  • Aerospace
  • Testing and measurement equipment
  • Marine applications
  • Automotive
  • Locks and security devices
  • Precision Instruments
  • Hardware

...and many more applications

237031
Product Extension OD 0.118 in, Length 0.689 in, Music Wire
Product Extension OD 3 mm, Length 17.5 mm, Music Wire
Part Number EIM030C 04 M
Series Instrument Extension Series (metric)
Outside Diameter (inch) 0.118
Outside Diameter (cm) 0.3
Outside Diameter (mm) 3
Wire Diameter (inch) 0.012
Wire Diameter (cm) 0.03
Wire Diameter (mm) 0.3
Max Load (gm) 381
Max Load (lb) 0.84
Max Load (kg) 0.381
Max Load (N) 3.737
Rate (gm/cm) 120
Rate (gm/mm) 12
Rate (kg/cm) 0.12
Rate (kg/mm) 0.012
Rate (lb/in) 0.674
Rate (N/cm) 1.18
Rate (N/mm) 0.118
Max Extended Length (cm) 4.633
Max Extended Length (in) 1.824
Max Extended Length (mm) 46.33
Initial Tension (gm) 34
Initial Tension (kg) 0.034
Initial Tension (lb) 0.075
Initial Tension (N) 0.334
Free Length (cm) 1.75
Free Length (inch) 0.689
Free Length (mm) 17.5
Material Music Wire
Loop Inside Diameter (cm) 0.239
Loop Inside Diameter (in) 0.094
Loop Inside Diameter (mm) 2.39
Ends Crossover Loops
Loop Position Random
Direction of Wind Factory Option
Finish Pre-coated with Tin
0.012 0.118 0.005 0.689 0.02 38.7 0.075 0.015 0.674 0.067 1.824 0.84 0.012 0.477 Random 0.118 0.005 0.689 0.02 38.7 0.075 0.015 0.674 0.067 1.824 0.84
Default View
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Top view
Quantity Price
1 - 19 $8.870
20 - 49 $5.370
50 - 99 $2.840
100 - 199 $1.770
200 - 299 $1.529
300 - 399 $1.419
400 - 499 $1.319
500 - 599 $1.230
600 - 699 $1.153
700 - 799 $1.088
800 - 899 $1.030
900 - 999 $0.987
1000 $0.953

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