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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LE 020B 07 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Zinc Plate and Bake per ASTM B633
Material
Music Wire
Total Coils
58.200
Published Stock Code
LE020B07M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.15
Rate (kg/cm)
0.16
Rate (lb/in)
0.87
Rate (gm/mm)
15.50
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
3.810
Free Length (inch)
1.500
Free Length (mm)
38.100
Free Length - Build Spec (in)
1.50
Free Length Tolerance (cm)
0.09
Free Length Tolerance (in)
0.04
Free Length Tolerance (mm)
0.89
Free Length Tolerance - Build Spec (in)
0.04
Inside Diameter (cm)
0.38
Inside Diameter (in)
0.15
Inside Diameter (mm)
3.76
Outside Diameter (cm)
0.478
Outside Diameter (in)
0.19
Outside Diameter (mm)
4.78
Outside Diameter - Build Spec (in)
0.19
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)
155.00
Rate (kg/mm)
0.02
Rate (N/cm)
1.52
Rate - Build Spec (lb/in)
0.87
Rate Tolerance (gm/cm)
15.50
Rate Tolerance (gm/mm)
1.55
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.09
Rate Tolerance (N/cm)
0.15
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.09
Total Coils - Build Spec
58.18
Wire Diameter (cm)
0.05
Wire Diameter (inch)
0.02
Wire Diameter (mm)
0.51
Wire Diameter - Build Spec (in)
0.02
Material Short Description
MW
Product Series
Standard Extension Series (inch)
Inside Diameter Tolerance (cm)
Reference
Inside Diameter Tolerance (in)
Reference
Inside Diameter Tolerance (mm)
Reference
Initial Tension - Build Spec. (lb)
0.22
Initial Tension (lb)
0.22
Initial Tension (N)
0.98
Initial Tension (kg)
0.10
Initial Tension (gm)
99.80
Initial Tension Tolerance - Build Spec. (lb)
0.04
Initial Tension Tolerance (lb)
0.04
Initial Tension Tolerance (N)
0.20
Initial Tension Tolerance (kg)
0.02
Initial Tension Tolerance (gm)
19.96
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
2.00
Max Load (lb)
2.00
Max Load (kg)
0.91
Max Load (gm)
907.20
Max Extended Length - Build Spec. (in)
3.55
Max Extended Length (in)
3.55
Max Extended Length (mm)
90.17
Max Extended Length (cm)
9.02
Body Length - Build Spec. (in)
1.20
Body Length (in)
1.20
Body Length (mm)
30.58
Body Length (cm)
3.06
Loop Inside Diameter - Build Spec. (in)
0.15
Loop Inside Diameter (in)
0.15
Loop Inside Diameter (mm)
3.76
Loop Inside Diameter (cm)
0.38
Loop Position
Random
Loop Opening - Build Spec. (in)
0.02
Loop Opening (in)
0.02
Loop Opening (mm)
0.51
Loop Opening (cm)
0.05
Max Load (N)
8.90
Inside Diameter - Build Spec (in)
0.15
Model Code
LE

Standard Extension Series (inch)

Selection to Match Your Needs

Lee Spring LE 020B 07 M is a precision extension spring from the Standard Extension Series (inch), engineered for applications requiring reliable quality extension springs. This spring features a 0.188-inch outside diameter (4.78 mm) with 0.148-inch loop inside diameter (3.76 mm) and extends from a free length of 1.5 inch (38.1 mm) to a maximum extended length of 3.55 inch (90.17 mm). Made from Music Wire with a 0.02-inch wire diameter (0.51 mm), the spring delivers a spring rate of 0.87 lb/inch (0.152 N/mm) through its 58.2 total coils with an initial tension of 0.22 lb (0.979 N). The spring supports a maximum load of 2 lb (8.896 N) at full extension with a body length of 1.204 inch (30.58 mm). The spring features Random loop position and Zinc Plate and Bake per ASTM B633 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 (inch) 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

240591
Product Extension OD 0.188 in, Length 1.5 in, Music Wire
Product Extension OD 4.78 mm, Length 38.1 mm, Music Wire
Part Number LE 020B 07 M
Series Standard Extension Series (inch)
Outside Diameter (inch) 0.188
Outside Diameter (cm) 0.478
Outside Diameter (mm) 4.78
Wire Diameter (inch) 0.02
Wire Diameter (cm) 0.051
Wire Diameter (mm) 0.51
Max Load (gm) 907.2
Max Load (lb) 2
Max Load (kg) 0.9072
Max Load (N) 8.896
Rate (gm/cm) 155
Rate (gm/mm) 15.5
Rate (kg/cm) 0.155
Rate (kg/mm) 0.0155
Rate (lb/in) 0.87
Rate (N/cm) 1.52
Rate (N/mm) 0.152
Max Extended Length (cm) 9.017
Max Extended Length (in) 3.55
Max Extended Length (mm) 90.17
Initial Tension (gm) 99.8
Initial Tension (kg): 0.0998
Initial Tension (lb) 0.22
Initial Tension (N) 0.979
Free Length (cm) 3.81
Free Length (inch) 1.5
Free Length (mm) 38.1
Material Music Wire
Loop Inside Diameter (cm) 0.376
Loop Inside Diameter (in) 0.148
Loop Inside Diameter (mm) 3.76
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.02 0.188 0.005 1.5 0.035 58.2 0.22 0.044 0.87 0.087 3.55 2 0.02 1.204 Random 0.188 0.005 1.5 0.035 58.2 0.22 0.044 0.87 0.087 3.55 2
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Quantity Price
1 - 19 $8.570
20 - 49 $5.170
50 - 99 $2.720
100 - 199 $1.690
200 - 299 $1.421
300 - 399 $1.334
400 - 499 $1.255
500 - 599 $1.188
600 - 699 $1.127
700 - 799 $1.076
800 - 899 $1.030
900 - 999 $0.996
1000 $0.974

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