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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LEM045B 13 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
126.400
Published Stock Code
LEM045B13M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.05
Rate (kg/cm)
0.06
Rate (lb/in)
0.31
Rate (gm/mm)
5.50
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
5.999
Free Length (inch)
2.362
Free Length (mm)
59.990
Free Length - Build Spec (in)
2.36
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)
0.36
Inside Diameter (in)
0.14
Inside Diameter (mm)
3.58
Outside Diameter (cm)
0.450
Outside Diameter (in)
0.18
Outside Diameter (mm)
4.50
Outside Diameter - Build Spec (in)
0.18
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)
55.00
Rate (kg/mm)
0.01
Rate (N/cm)
0.54
Rate - Build Spec (lb/in)
0.31
Rate Tolerance (gm/cm)
5.50
Rate Tolerance (gm/mm)
0.55
Rate Tolerance (kg/cm)
0.01
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.03
Rate Tolerance (N/cm)
0.05
Rate Tolerance (N/mm)
0.01
Rate Tolerance - Build Spec (lb/in)
0.03
Total Coils - Build Spec
126.37
Wire Diameter (cm)
0.05
Wire Diameter (inch)
0.02
Wire Diameter (mm)
0.46
Wire Diameter - Build Spec (in)
0.02
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)
0.14
Initial Tension (lb)
0.14
Initial Tension (N)
0.62
Initial Tension (kg)
0.06
Initial Tension (gm)
63.50
Initial Tension Tolerance - Build Spec. (lb)
0.03
Initial Tension Tolerance (lb)
0.03
Initial Tension Tolerance (N)
0.12
Initial Tension Tolerance (kg)
0.01
Initial Tension Tolerance (gm)
12.70
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
1.54
Max Load (lb)
1.54
Max Load (kg)
0.70
Max Load (gm)
698.50
Max Extended Length - Build Spec. (in)
6.88
Max Extended Length (in)
6.88
Max Extended Length (mm)
174.80
Max Extended Length (cm)
17.48
Body Length - Build Spec. (in)
2.08
Body Length (in)
2.08
Body Length (mm)
52.83
Body Length (cm)
5.28
Loop Inside Diameter - Build Spec. (in)
0.14
Loop Inside Diameter (in)
0.14
Loop Inside Diameter (mm)
3.58
Loop Inside Diameter (cm)
0.36
Loop Position
Random
Loop Opening - Build Spec. (in)
0.02
Loop Opening (in)
0.02
Loop Opening (mm)
0.46
Loop Opening (cm)
0.05
Max Load (N)
6.85
Inside Diameter - Build Spec (in)
0.14
Model Code
LEM

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM045B 13 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 4.5-mm outside diameter (0.177 inch) with 3.58-mm loop inside diameter (0.141 inch) and extends from a free length of 59.99 mm (2.362 inch) to a maximum extended length of 174.8 mm (6.882 inch). Made from Music Wire with a 0.46-mm wire diameter (0.018 inch), the spring delivers a spring rate of 0.054 N/mm (0.31 lb/inch) through its 126.4 total coils with an initial tension of 0.623 N (0.14 lb) for predictable extension behavior. The spring supports a maximum load of 6.85 N (1.54 lb) at full extension with a body length of 52.83 mm (2.08 inch). 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 (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

268381
Product Extension OD 0.177 in, Length 2.362 in, Music Wire
Product Extension OD 4.5 mm, Length 59.99 mm, Music Wire
Part Number LEM045B 13 M
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.177
Outside Diameter (cm) 0.45
Outside Diameter (mm) 4.5
Wire Diameter (inch) 0.018
Wire Diameter (cm) 0.046
Wire Diameter (mm) 0.46
Max Load (gm) 698.5
Max Load (lb) 1.54
Max Load (kg) 0.6985
Max Load (N) 6.85
Rate (gm/cm) 55
Rate (gm/mm) 5.5
Rate (kg/cm) 0.055
Rate (kg/mm) 0.0055
Rate (lb/in) 0.31
Rate (N/cm) 0.54
Rate (N/mm) 0.054
Max Extended Length (cm) 17.48
Max Extended Length (in) 6.882
Max Extended Length (mm) 174.8
Initial Tension (gm) 63.5
Initial Tension (kg) 0.0635
Initial Tension (lb) 0.14
Initial Tension (N) 0.623
Free Length (cm) 5.999
Free Length (inch) 2.362
Free Length (mm) 59.99
Material Music Wire
Loop Inside Diameter (cm) 0.358
Loop Inside Diameter (in) 0.141
Loop Inside Diameter (mm) 3.58
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.018 0.177 0.005 2.362 0.05 126.4 0.14 0.028 0.31 0.031 6.882 1.54 0.018 2.08 Random 0.177 0.005 2.362 0.05 126.4 0.14 0.028 0.31 0.031 6.882 1.54
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Quantity Price
1 - 19 $9.210
20 - 49 $5.600
50 - 99 $2.960
100 - 199 $1.870
200 - 299 $1.556
300 - 399 $1.463
400 - 499 $1.376
500 - 599 $1.301
600 - 699 $1.235
700 - 799 $1.178
800 - 899 $1.131
900 - 999 $1.094
1000 $1.064

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