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Specifications

 

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Physical Dimension

mm cm

Load

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LE 049E 12 S

Cost
$0.00
$0.00
Price
$0.00
Weight
0.07 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Passivate per ASTM A967
Material
Stainless Steel
Total Coils
84.900
Published Stock Code
LE049E12S
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.16
Rate (kg/cm)
0.17
Rate (lb/in)
0.93
Rate (gm/mm)
16.50
Weight per Item (lb)
0.07
Material Specification
ASTM A313
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)
165.00
Rate (kg/mm)
0.02
Rate (N/cm)
1.62
Rate - Build Spec (lb/in)
0.93
Rate Tolerance (gm/cm)
16.50
Rate Tolerance (gm/mm)
1.65
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.09
Rate Tolerance (N/cm)
0.16
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.09
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
SS
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)
0.73
Initial Tension (lb)
0.73
Initial Tension (N)
3.26
Initial Tension (kg)
0.33
Initial Tension (gm)
332.50
Initial Tension Tolerance - Build Spec. (lb)
0.15
Initial Tension Tolerance (lb)
0.15
Initial Tension Tolerance (N)
0.65
Initial Tension Tolerance (kg)
0.07
Initial Tension Tolerance (gm)
66.50
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
8.33
Max Load (lb)
8.33
Max Load (kg)
3.78
Max Load (gm)
3778.50
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)
37.05
Inside Diameter - Build Spec (in)
0.40
Model Code
LE

Standard Extension Series (inch)

Selection to Match Your Needs

Lee Spring LE 049E 12 S 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 Stainless Steel with a 0.049-inch wire diameter (1.24 mm), the spring delivers a spring rate of 0.925 lb/inch (0.162 N/mm) through its 84.9 total coils with an initial tension of 0.733 lb (3.261 N). The spring supports a maximum load of 8.33 lb (37.054 N) at full extension with a body length of 4.21 inch (106.93 mm). The spring features Random loop position and Passivate per ASTM A967 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

255001
Product Extension OD 0.5 in, Length 5 in, Stainless Steel
Product Extension OD 12.7 mm, Length 127 mm, Stainless Steel
Part Number LE 049E 12 S
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) 3778.5
Max Load (lb) 8.33
Max Load (kg) 3.7785
Max Load (N) 37.054
Rate (gm/cm) 165
Rate (gm/mm) 16.5
Rate (kg/cm) 0.165
Rate (kg/mm) 0.0165
Rate (lb/in) 0.925
Rate (N/cm) 1.62
Rate (N/mm) 0.162
Max Extended Length (cm) 33.569
Max Extended Length (in) 13.216
Max Extended Length (mm) 335.69
Initial Tension (gm) 332.5
Initial Tension (kg): 0.3325
Initial Tension (lb) 0.733
Initial Tension (N) 3.261
Free Length (cm) 12.7
Free Length (inch) 5
Free Length (mm) 127
Material Stainless Steel
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 Passivate per ASTM A967
0.049 0.5 0.01 5 0.1 84.9 0.733 0.1466 0.925 0.0925 13.216 8.33 0.049 4.21 Random 0.5 0.01 5 0.1 84.9 0.733 0.1466 0.925 0.0925 13.216 8.33
Default View
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Quantity Price
1 - 19 $13.800
20 - 49 $8.640
50 - 99 $4.980
100 - 199 $3.290
200 - 299 $2.697
300 - 399 $2.405
400 - 499 $2.196
500 - 599 $2.036
600 - 699 $1.901
700 - 799 $1.787
800 - 899 $1.693
900 - 999 $1.605
1000 $1.527

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