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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

EIM030B 05 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
50.300
Published Stock Code
EIM030B05M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.17
Rate (kg/cm)
0.17
Rate (lb/in)
0.97
Rate (gm/mm)
17.40
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
1.999
Free Length (inch)
0.787
Free Length (mm)
19.990
Free Length - Build Spec (in)
0.79
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)
0.19
Inside Diameter (in)
0.07
Inside Diameter (mm)
1.88
Outside Diameter (cm)
0.249
Outside Diameter (in)
0.10
Outside Diameter (mm)
2.49
Outside Diameter - Build Spec (in)
0.10
Outside Diameter Tolerance (cm)
0.01
Outside Diameter Tolerance (in)
0.00
Outside Diameter Tolerance (mm)
0.10
Outside Diameter Tolerance - Build Spec (in)
0.00
Rate (gm/cm)
174.00
Rate (kg/mm)
0.02
Rate (N/cm)
1.70
Rate - Build Spec (lb/in)
0.97
Rate Tolerance (gm/cm)
17.30
Rate Tolerance (gm/mm)
1.73
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.10
Rate Tolerance (N/cm)
0.17
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.10
Total Coils - Build Spec
50.28
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)
0.09
Initial Tension (lb)
0.09
Initial Tension (N)
0.40
Initial Tension (kg)
0.04
Initial Tension (gm)
40.80
Initial Tension Tolerance - Build Spec. (lb)
0.02
Initial Tension Tolerance (lb)
0.02
Initial Tension Tolerance (N)
0.08
Initial Tension Tolerance (kg)
0.01
Initial Tension Tolerance (gm)
8.16
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
1.04
Max Load (lb)
1.04
Max Load (kg)
0.47
Max Load (gm)
469.90
Max Extended Length - Build Spec. (in)
1.76
Max Extended Length (in)
1.76
Max Extended Length (mm)
44.70
Max Extended Length (cm)
4.47
Body Length - Build Spec. (in)
0.62
Body Length (in)
0.62
Body Length (mm)
15.62
Body Length (cm)
1.56
Loop Inside Diameter - Build Spec. (in)
0.07
Loop Inside Diameter (in)
0.07
Loop Inside Diameter (mm)
1.88
Loop Inside Diameter (cm)
0.19
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)
4.61
Inside Diameter - Build Spec (in)
0.07
Model Code
EIM

Extension Spring: OD 2.49 mm, FL 19.99 mm, Music Wire

Instrument Extension Series (metric)

Precision Springs for Precision Products.

Lee Spring EIM030B 05 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 2.49-mm outside diameter (0.098 inch) with 1.88-mm loop inside diameter (0.074 inch) and extends from a free length of 19.99 mm (0.787 inch) to a maximum extended length of 44.7 mm (1.76 inch). Made from Music Wire with a 0.3-mm wire diameter (0.012 inch), the spring delivers a spring rate of 0.17 N/mm (0.973 lb/inch) through its 50.3 total coils with an initial tension of 0.4 N (0.09 lb) for predictable extension behavior. The spring supports a maximum load of 4.608 N (1.036 lb) at full extension with a body length of 15.62 mm (0.615 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

236911
Product Extension OD 0.098 in, Length 0.787 in, Music Wire
Product Extension OD 2.49 mm, Length 19.99 mm, Music Wire
Part Number EIM030B 05 M
Series Instrument Extension Series (metric)
Outside Diameter (inch) 0.098
Outside Diameter (cm) 0.249
Outside Diameter (mm) 2.49
Wire Diameter (inch) 0.012
Wire Diameter (cm) 0.03
Wire Diameter (mm) 0.3
Max Load (gm) 469.9
Max Load (lb) 1.036
Max Load (kg) 0.4699
Max Load (N) 4.608
Rate (gm/cm) 174
Rate (gm/mm) 17.4
Rate (kg/cm) 0.174
Rate (kg/mm) 0.0174
Rate (lb/in) 0.973
Rate (N/cm) 1.7
Rate (N/mm) 0.17
Max Extended Length (cm) 4.47
Max Extended Length (in) 1.76
Max Extended Length (mm) 44.7
Initial Tension (gm) 40.8
Initial Tension (kg) 0.0408
Initial Tension (lb) 0.09
Initial Tension (N) 0.4
Free Length (cm) 1.999
Free Length (inch) 0.787
Free Length (mm) 19.99
Material Music Wire
Loop Inside Diameter (cm) 0.188
Loop Inside Diameter (in) 0.074
Loop Inside Diameter (mm) 1.88
Ends Crossover Loops
Loop Position Random
Direction of Wind Factory Option
Finish Pre-coated with Tin
0.012 0.098 0.004 0.787 0.02 50.3 0.09 0.018 0.973 0.097 1.76 1.036 0.012 0.615 Random 0.098 0.004 0.787 0.02 50.3 0.09 0.018 0.973 0.097 1.76 1.036
Default View
Side view
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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