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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LEM120E 04 S

Cost
$0.00
$0.00
Price
$0.00
Weight
0.02 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Passivate per ASTM A967
Material
Stainless Steel
Total Coils
27.500
Published Stock Code
LEM120E04S
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.44
Rate (kg/cm)
0.45
Rate (lb/in)
2.52
Rate (gm/mm)
45.00
Weight per Item (lb)
0.02
Material Specification
ASTM A313
Free Length (cm)
5.499
Free Length (inch)
2.165
Free Length (mm)
54.990
Free Length - Build Spec (in)
2.17
Free Length Tolerance (cm)
0.13
Free Length Tolerance (in)
0.05
Free Length Tolerance (mm)
1.27
Free Length Tolerance - Build Spec (in)
0.05
Inside Diameter (cm)
1.01
Inside Diameter (in)
0.40
Inside Diameter (mm)
10.11
Outside Diameter (cm)
1.250
Outside Diameter (in)
0.49
Outside Diameter (mm)
12.50
Outside Diameter - Build Spec (in)
0.49
Outside Diameter Tolerance (cm)
0.03
Outside Diameter Tolerance (in)
0.01
Outside Diameter Tolerance (mm)
0.25
Outside Diameter Tolerance - Build Spec (in)
0.01
Rate (gm/cm)
450.00
Rate (kg/mm)
0.05
Rate (N/cm)
4.41
Rate - Build Spec (lb/in)
2.52
Rate Tolerance (gm/cm)
45.00
Rate Tolerance (gm/mm)
4.50
Rate Tolerance (kg/cm)
0.05
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.25
Rate Tolerance (N/cm)
0.44
Rate Tolerance (N/mm)
0.04
Rate Tolerance - Build Spec (lb/in)
0.25
Total Coils - Build Spec
27.47
Wire Diameter (cm)
0.12
Wire Diameter (inch)
0.05
Wire Diameter (mm)
1.19
Wire Diameter - Build Spec (in)
0.05
Material Short Description
SS
Product Series
Standard Extension Series (metric)
Inside Diameter Tolerance (cm)
Reference
Inside Diameter Tolerance (in)
Reference
Inside Diameter Tolerance (mm)
Reference
Initial Tension - Build Spec. (lb)
0.73
Initial Tension (lb)
0.73
Initial Tension (N)
3.26
Initial Tension (kg)
0.33
Initial Tension (gm)
332.50
Initial Tension Tolerance - Build Spec. (lb)
0.15
Initial Tension Tolerance (lb)
0.15
Initial Tension Tolerance (N)
0.65
Initial Tension Tolerance (kg)
0.07
Initial Tension Tolerance (gm)
66.50
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
7.35
Max Load (lb)
7.35
Max Load (kg)
3.33
Max Load (gm)
3332.60
Max Extended Length - Build Spec. (in)
4.79
Max Extended Length (in)
4.79
Max Extended Length (mm)
121.54
Max Extended Length (cm)
12.15
Body Length - Build Spec. (in)
1.37
Body Length (in)
1.37
Body Length (mm)
34.77
Body Length (cm)
3.48
Loop Inside Diameter - Build Spec. (in)
0.40
Loop Inside Diameter (in)
0.40
Loop Inside Diameter (mm)
10.11
Loop Inside Diameter (cm)
1.01
Loop Position
Random
Loop Opening - Build Spec. (in)
0.05
Loop Opening (in)
0.05
Loop Opening (mm)
1.19
Loop Opening (cm)
0.12
Max Load (N)
32.68
Inside Diameter - Build Spec (in)
0.40
Model Code
LEM

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM120E 04 S is a precision extension spring from the Standard Extension Series (metric) series, engineered for applications requiring reliable quality extension springs. This spring features a 12.5-mm outside diameter (0.492 inch) with 10.11-mm loop inside diameter (0.398 inch) and extends from a free length of 54.99 mm (2.165 inch) to a maximum extended length of 121.54 mm (4.785 inch). Made from Stainless Steel with a 1.19-mm wire diameter (0.047 inch), the spring delivers a spring rate of 0.441 N/mm (2.52 lb/inch) through its 27.5 total coils with an initial tension of 3.261 N (0.733 lb) for predictable extension behavior. The spring supports a maximum load of 32.681 N (7.347 lb) at full extension with a body length of 34.77 mm (1.369 inch). The spring features Random loop position and Passivate per ASTM A967 finish for optimal performance.

Extension Springs: Standard Series

The Lee Spring Standard Extension Spring Series includes a wide range of size and rate combinations and in both inch and metric sizes. Standard 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 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.

Lee Spring's Stock Extension Springs are supplied with full diameter loops (either to machine or crossover center style) at a random position with the exception of Metric Extension Springs which are specified to meet DIN Standards. Loop openings are approximately one wire diameter and the direction of wind is factory optional.

Standard 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

272331
Product Extension OD 0.492 in, Length 2.165 in, Stainless Steel
Product Extension OD 12.5 mm, Length 54.99 mm, Stainless Steel
Part Number LEM120E 04 S
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.492
Outside Diameter (cm) 1.25
Outside Diameter (mm) 12.5
Wire Diameter (inch) 0.047
Wire Diameter (cm) 0.119
Wire Diameter (mm) 1.19
Max Load (gm) 3332.6
Max Load (lb) 7.347
Max Load (kg) 3.3326
Max Load (N) 32.681
Rate (gm/cm) 450
Rate (gm/mm) 45
Rate (kg/cm) 0.45
Rate (kg/mm) 0.045
Rate (lb/in) 2.52
Rate (N/cm) 4.41
Rate (N/mm) 0.441
Max Extended Length (cm) 12.154
Max Extended Length (in) 4.785
Max Extended Length (mm) 121.54
Initial Tension (gm) 332.5
Initial Tension (kg) 0.3325
Initial Tension (lb) 0.733
Initial Tension (N) 3.261
Free Length (cm) 5.499
Free Length (inch) 2.165
Free Length (mm) 54.99
Material Stainless Steel
Loop Inside Diameter (cm) 1.011
Loop Inside Diameter (in) 0.398
Loop Inside Diameter (mm) 10.11
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Passivate per ASTM A967
0.047 0.492 0.01 2.165 0.05 27.5 0.733 0.1466 2.52 0.252 4.785 7.347 0.047 1.369 Random 0.492 0.01 2.165 0.05 27.5 0.733 0.1466 2.52 0.252 4.785 7.347
Default View
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Quantity Price
1 - 19 $9.570
20 - 49 $5.810
50 - 99 $3.100
100 - 199 $1.960
200 - 299 $1.696
300 - 399 $1.609
400 - 499 $1.533
500 - 599 $1.465
600 - 699 $1.405
700 - 799 $1.355
800 - 899 $1.315
900 - 999 $1.280
1000 $1.253

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