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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LEM075CD 04 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Pre-coated with Tin
Material
Music Wire
Total Coils
37.500
Published Stock Code
LEM075CD04M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.25
Rate (kg/cm)
0.25
Rate (lb/in)
1.40
Rate (gm/mm)
25.00
Weight per Item (lb)
0.01
Material Specification
ASTM A228
Free Length (cm)
4.001
Free Length (inch)
1.575
Free Length (mm)
40.010
Free Length - Build Spec (in)
1.58
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)
0.65
Inside Diameter (in)
0.26
Inside Diameter (mm)
6.53
Outside Diameter (cm)
0.800
Outside Diameter (in)
0.32
Outside Diameter (mm)
8.00
Outside Diameter - Build Spec (in)
0.32
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)
250.00
Rate (kg/mm)
0.03
Rate (N/cm)
2.45
Rate - Build Spec (lb/in)
1.40
Rate Tolerance (gm/cm)
25.00
Rate Tolerance (gm/mm)
2.50
Rate Tolerance (kg/cm)
0.03
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.14
Rate Tolerance (N/cm)
0.25
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.14
Total Coils - Build Spec
37.49
Wire Diameter (cm)
0.07
Wire Diameter (inch)
0.03
Wire Diameter (mm)
0.74
Wire Diameter - Build Spec (in)
0.03
Material Short Description
MW
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)
0.37
Initial Tension (lb)
0.37
Initial Tension (N)
1.65
Initial Tension (kg)
0.17
Initial Tension (gm)
167.80
Initial Tension Tolerance - Build Spec. (lb)
0.07
Initial Tension Tolerance (lb)
0.07
Initial Tension Tolerance (N)
0.33
Initial Tension Tolerance (kg)
0.03
Initial Tension Tolerance (gm)
33.57
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
3.75
Max Load (lb)
3.75
Max Load (kg)
1.70
Max Load (gm)
1701.00
Max Extended Length - Build Spec. (in)
3.99
Max Extended Length (in)
3.99
Max Extended Length (mm)
101.22
Max Extended Length (cm)
10.12
Body Length - Build Spec. (in)
1.07
Body Length (in)
1.07
Body Length (mm)
27.05
Body Length (cm)
2.71
Loop Inside Diameter - Build Spec. (in)
0.26
Loop Inside Diameter (in)
0.26
Loop Inside Diameter (mm)
6.48
Loop Inside Diameter (cm)
0.65
Loop Position
Random
Loop Opening - Build Spec. (in)
0.03
Loop Opening (in)
0.03
Loop Opening (mm)
0.74
Loop Opening (cm)
0.07
Max Load (N)
16.68
Inside Diameter - Build Spec (in)
0.26
Model Code
LEM

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM075CD 04 M is a precision extension spring from the Standard Extension Series (metric) series, engineered for applications requiring reliable quality extension springs. This spring features a 8-mm outside diameter (0.315 inch) with 6.48-mm loop inside diameter (0.255 inch) and extends from a free length of 40.01 mm (1.575 inch) to a maximum extended length of 101.22 mm (3.985 inch). Made from Music Wire with a 0.74-mm wire diameter (0.029 inch), the spring delivers a spring rate of 0.245 N/mm (1.4 lb/inch) through its 37.5 total coils with an initial tension of 1.646 N (0.37 lb) for predictable extension behavior. The spring supports a maximum load of 16.681 N (3.75 lb) at full extension with a body length of 27.05 mm (1.065 inch). The spring features Random loop position and Pre-coated with Tin 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

270201
Product Extension OD 0.315 in, Length 1.575 in, Music Wire
Product Extension OD 8 mm, Length 40.01 mm, Music Wire
Part Number LEM075CD 04 M
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.315
Outside Diameter (cm) 0.8
Outside Diameter (mm) 8
Wire Diameter (inch) 0.029
Wire Diameter (cm) 0.074
Wire Diameter (mm) 0.74
Max Load (gm) 1701
Max Load (lb) 3.75
Max Load (kg) 1.701
Max Load (N) 16.681
Rate (gm/cm) 250
Rate (gm/mm) 25
Rate (kg/cm) 0.25
Rate (kg/mm) 0.025
Rate (lb/in) 1.4
Rate (N/cm) 2.45
Rate (N/mm) 0.245
Max Extended Length (cm) 10.122
Max Extended Length (in) 3.985
Max Extended Length (mm) 101.22
Initial Tension (gm) 167.8
Initial Tension (kg) 0.1678
Initial Tension (lb) 0.37
Initial Tension (N) 1.646
Free Length (cm) 4.001
Free Length (inch) 1.575
Free Length (mm) 40.01
Material Music Wire
Loop Inside Diameter (cm) 0.648
Loop Inside Diameter (in) 0.255
Loop Inside Diameter (mm) 6.48
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Pre-coated with Tin
0.029 0.315 0.01 1.575 0.04 37.5 0.37 0.074 1.4 0.14 3.985 3.75 0.029 1.065 Random 0.315 0.01 1.575 0.04 37.5 0.37 0.074 1.4 0.14 3.985 3.75
Default View
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Quantity Price
1 - 19 $8.310
20 - 49 $5.040
50 - 99 $2.610
100 - 199 $1.590
200 - 299 $1.328
300 - 399 $1.236
400 - 499 $1.156
500 - 599 $1.085
600 - 699 $1.020
700 - 799 $0.969
800 - 899 $0.922
900 - 999 $0.888
1000 $0.860

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