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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LE 037E 04 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.01 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Zinc Plate and Bake per ASTM B633
Material
Music Wire
Total Coils
23.600
Published Stock Code
LE037E04M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.21
Rate (kg/cm)
0.21
Rate (lb/in)
1.20
Rate (gm/mm)
21.40
Weight per Item (lb)
0.01
Material Specification
ASTM A228
Free Length (cm)
4.445
Free Length (inch)
1.750
Free Length (mm)
44.450
Free Length - Build Spec (in)
1.75
Free Length Tolerance (cm)
0.10
Free Length Tolerance (in)
0.04
Free Length Tolerance (mm)
1.02
Free Length Tolerance - Build Spec (in)
0.04
Inside Diameter (cm)
1.08
Inside Diameter (in)
0.43
Inside Diameter (mm)
10.82
Outside Diameter (cm)
1.270
Outside Diameter (in)
0.50
Outside Diameter (mm)
12.70
Outside Diameter - Build Spec (in)
0.50
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)
214.00
Rate (kg/mm)
0.02
Rate (N/cm)
2.10
Rate - Build Spec (lb/in)
1.20
Rate Tolerance (gm/cm)
21.40
Rate Tolerance (gm/mm)
2.14
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.12
Rate Tolerance (N/cm)
0.21
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.12
Total Coils - Build Spec
23.60
Wire Diameter (cm)
0.09
Wire Diameter (inch)
0.04
Wire Diameter (mm)
0.94
Wire Diameter - Build Spec (in)
0.04
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)
0.40
Initial Tension (lb)
0.40
Initial Tension (N)
1.78
Initial Tension (kg)
0.18
Initial Tension (gm)
181.40
Initial Tension Tolerance - Build Spec. (lb)
0.08
Initial Tension Tolerance (lb)
0.08
Initial Tension Tolerance (N)
0.36
Initial Tension Tolerance (kg)
0.04
Initial Tension Tolerance (gm)
36.29
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
4.30
Max Load (lb)
4.30
Max Load (kg)
1.95
Max Load (gm)
1950.50
Max Extended Length - Build Spec. (in)
5.00
Max Extended Length (in)
5.00
Max Extended Length (mm)
127.00
Max Extended Length (cm)
12.70
Body Length - Build Spec. (in)
0.90
Body Length (in)
0.90
Body Length (mm)
22.81
Body Length (cm)
2.28
Loop Inside Diameter - Build Spec. (in)
0.43
Loop Inside Diameter (in)
0.43
Loop Inside Diameter (mm)
10.82
Loop Inside Diameter (cm)
1.08
Loop Position
Random
Loop Opening - Build Spec. (in)
0.04
Loop Opening (in)
0.04
Loop Opening (mm)
0.94
Loop Opening (cm)
0.09
Max Load (N)
19.13
Inside Diameter - Build Spec (in)
0.43
Model Code
LE

Standard Extension Series (inch)

Selection to Match Your Needs

Lee Spring LE 037E 04 M is a precision extension spring from the Standard Extension Series (inch), engineered for applications requiring reliable quality extension springs. This spring features a 0.5-inch outside diameter (12.7 mm) with 0.426-inch loop inside diameter (10.82 mm) and extends from a free length of 1.75 inch (44.45 mm) to a maximum extended length of 5 inch (127 mm). Made from Music Wire with a 0.037-inch wire diameter (0.94 mm), the spring delivers a spring rate of 1.2 lb/inch (0.21 N/mm) through its 23.6 total coils with an initial tension of 0.4 lb (1.779 N). The spring supports a maximum load of 4.3 lb (19.127 N) at full extension with a body length of 0.898 inch (22.81 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

249891
Product Extension OD 0.5 in, Length 1.75 in, Music Wire
Product Extension OD 12.7 mm, Length 44.45 mm, Music Wire
Part Number LE 037E 04 M
Series Standard Extension Series (inch)
Outside Diameter (inch) 0.5
Outside Diameter (cm) 1.27
Outside Diameter (mm) 12.7
Wire Diameter (inch) 0.037
Wire Diameter (cm) 0.094
Wire Diameter (mm) 0.94
Max Load (gm) 1950.5
Max Load (lb) 4.3
Max Load (kg) 1.9505
Max Load (N) 19.127
Rate (gm/cm) 214
Rate (gm/mm) 21.4
Rate (kg/cm) 0.214
Rate (kg/mm) 0.0214
Rate (lb/in) 1.2
Rate (N/cm) 2.1
Rate (N/mm) 0.21
Max Extended Length (cm) 12.7
Max Extended Length (in) 5
Max Extended Length (mm) 127
Initial Tension (gm) 181.4
Initial Tension (kg): 0.1814
Initial Tension (lb) 0.4
Initial Tension (N) 1.779
Free Length (cm) 4.445
Free Length (inch) 1.75
Free Length (mm) 44.45
Material Music Wire
Loop Inside Diameter (cm) 1.082
Loop Inside Diameter (in) 0.426
Loop Inside Diameter (mm) 10.82
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.037 0.5 0.01 1.75 0.04 23.6 0.4 0.08 1.2 0.12 5 4.3 0.037 0.898 Random 0.5 0.01 1.75 0.04 23.6 0.4 0.08 1.2 0.12 5 4.3
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Quantity Price
1 - 19 $9.210
20 - 49 $5.600
50 - 99 $2.960
100 - 199 $1.870
200 - 299 $1.569
300 - 399 $1.479
400 - 499 $1.401
500 - 599 $1.330
600 - 699 $1.267
700 - 799 $1.214
800 - 899 $1.171
900 - 999 $1.134
1000 $1.106

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