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Specifications

 

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Physical Dimension

mm cm

Load

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LE 049E 12 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.07 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Zinc Plate and Bake per ASTM B633
Material
Music Wire
Total Coils
84.900
Published Stock Code
LE049E12M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.19
Rate (kg/cm)
0.20
Rate (lb/in)
1.11
Rate (gm/mm)
19.80
Weight per Item (lb)
0.07
Material Specification
ASTM A228
Free Length (cm)
12.700
Free Length (inch)
5.000
Free Length (mm)
127.000
Free Length - Build Spec (in)
5.00
Free Length Tolerance (cm)
0.25
Free Length Tolerance (in)
0.10
Free Length Tolerance (mm)
2.54
Free Length Tolerance - Build Spec (in)
0.10
Inside Diameter (cm)
1.02
Inside Diameter (in)
0.40
Inside Diameter (mm)
10.21
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)
198.00
Rate (kg/mm)
0.02
Rate (N/cm)
1.94
Rate - Build Spec (lb/in)
1.11
Rate Tolerance (gm/cm)
19.80
Rate Tolerance (gm/mm)
1.98
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.11
Rate Tolerance (N/cm)
0.19
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.11
Total Coils - Build Spec
84.92
Wire Diameter (cm)
0.12
Wire Diameter (inch)
0.05
Wire Diameter (mm)
1.24
Wire Diameter - Build Spec (in)
0.05
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)
0.88
Initial Tension (lb)
0.88
Initial Tension (N)
3.91
Initial Tension (kg)
0.40
Initial Tension (gm)
399.20
Initial Tension Tolerance - Build Spec. (lb)
0.18
Initial Tension Tolerance (lb)
0.18
Initial Tension Tolerance (N)
0.78
Initial Tension Tolerance (kg)
0.08
Initial Tension Tolerance (gm)
79.83
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
10.00
Max Load (lb)
10.00
Max Load (kg)
4.54
Max Load (gm)
4536.00
Max Extended Length - Build Spec. (in)
13.22
Max Extended Length (in)
13.22
Max Extended Length (mm)
335.69
Max Extended Length (cm)
33.57
Body Length - Build Spec. (in)
4.21
Body Length (in)
4.21
Body Length (mm)
106.93
Body Length (cm)
10.69
Loop Inside Diameter - Build Spec. (in)
0.40
Loop Inside Diameter (in)
0.40
Loop Inside Diameter (mm)
10.21
Loop Inside Diameter (cm)
1.02
Loop Position
Random
Loop Opening - Build Spec. (in)
0.05
Loop Opening (in)
0.05
Loop Opening (mm)
1.24
Loop Opening (cm)
0.12
Max Load (N)
44.48
Inside Diameter - Build Spec (in)
0.40
Model Code
LE

Standard Extension Series (inch)

Selection to Match Your Needs

Lee Spring LE 049E 12 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 0.402-inch loop inside diameter (10.21 mm) and extends from a free length of 5 inch (127 mm) to a maximum extended length of 13.216 inch (335.69 mm). Made from Music Wire with a 0.049-inch wire diameter (1.24 mm), the spring delivers a spring rate of 1.11 lb/inch (0.194 N/mm) through its 84.9 total coils with an initial tension of 0.88 lb (3.914 N). The spring supports a maximum load of 10 lb (44.482 N) at full extension with a body length of 4.21 inch (106.93 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

254991
Product Extension OD 0.5 in, Length 5 in, Music Wire
Product Extension OD 12.7 mm, Length 127 mm, Music Wire
Part Number LE 049E 12 M
Series Standard Extension Series (inch)
Outside Diameter (inch) 0.5
Outside Diameter (cm) 1.27
Outside Diameter (mm) 12.7
Wire Diameter (inch) 0.049
Wire Diameter (cm) 0.124
Wire Diameter (mm) 1.24
Max Load (gm) 4536
Max Load (lb) 10
Max Load (kg) 4.536
Max Load (N) 44.482
Rate (gm/cm) 198
Rate (gm/mm) 19.8
Rate (kg/cm) 0.198
Rate (kg/mm) 0.0198
Rate (lb/in) 1.11
Rate (N/cm) 1.94
Rate (N/mm) 0.194
Max Extended Length (cm) 33.569
Max Extended Length (in) 13.216
Max Extended Length (mm) 335.69
Initial Tension (gm) 399.2
Initial Tension (kg): 0.3992
Initial Tension (lb) 0.88
Initial Tension (N) 3.914
Free Length (cm) 12.7
Free Length (inch) 5
Free Length (mm) 127
Material Music Wire
Loop Inside Diameter (cm) 1.021
Loop Inside Diameter (in) 0.402
Loop Inside Diameter (mm) 10.21
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.049 0.5 0.01 5 0.1 84.9 0.88 0.176 1.11 0.111 13.216 10 0.049 4.21 Random 0.5 0.01 5 0.1 84.9 0.88 0.176 1.11 0.111 13.216 10
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Quantity Price
1 - 19 $11.660
20 - 49 $7.220
50 - 99 $3.980
100 - 199 $2.590
200 - 299 $2.205
300 - 399 $2.009
400 - 499 $1.868
500 - 599 $1.756
600 - 699 $1.667
700 - 799 $1.592
800 - 899 $1.527
900 - 999 $1.467
1000 $1.415

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