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Specifications

 

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Physical Dimension

mm cm

Load

N kg gm

 
 

LEM050AB 02 S

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Passivate per ASTM A967
Material
Stainless Steel
Total Coils
16.000
Published Stock Code
LEM050AB02S
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
1.22
Rate (kg/cm)
1.25
Rate (lb/in)
6.97
Rate (gm/mm)
124.50
Weight per Item (lb)
0.00
Material Specification
ASTM A313
Free Length (cm)
1.250
Free Length (inch)
0.492
Free Length (mm)
12.500
Free Length - Build Spec (in)
0.49
Free Length Tolerance (cm)
0.05
Free Length Tolerance (in)
0.02
Free Length Tolerance (mm)
0.51
Free Length Tolerance - Build Spec (in)
0.02
Inside Diameter (cm)
0.25
Inside Diameter (in)
0.10
Inside Diameter (mm)
2.54
Outside Diameter (cm)
0.351
Outside Diameter (in)
0.14
Outside Diameter (mm)
3.51
Outside Diameter - Build Spec (in)
0.14
Outside Diameter Tolerance (cm)
0.02
Outside Diameter Tolerance (in)
0.01
Outside Diameter Tolerance (mm)
0.15
Outside Diameter Tolerance - Build Spec (in)
0.01
Rate (gm/cm)
1245.00
Rate (kg/mm)
0.12
Rate (N/cm)
12.21
Rate - Build Spec (lb/in)
6.97
Rate Tolerance (gm/cm)
124.50
Rate Tolerance (gm/mm)
12.45
Rate Tolerance (kg/cm)
0.12
Rate Tolerance (kg/mm)
0.01
Rate Tolerance (lb/in)
0.70
Rate Tolerance (N/cm)
1.22
Rate Tolerance (N/mm)
0.12
Rate Tolerance - Build Spec (lb/in)
0.70
Total Coils - Build Spec
16.00
Wire Diameter (cm)
0.05
Wire Diameter (inch)
0.02
Wire Diameter (mm)
0.48
Wire Diameter - Build Spec (in)
0.02
Material Short Description
SS
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)
0.33
Initial Tension (lb)
0.33
Initial Tension (N)
1.47
Initial Tension (kg)
0.15
Initial Tension (gm)
150.10
Initial Tension Tolerance - Build Spec. (lb)
0.07
Initial Tension Tolerance (lb)
0.07
Initial Tension Tolerance (N)
0.29
Initial Tension Tolerance (kg)
0.03
Initial Tension Tolerance (gm)
29.94
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
2.25
Max Load (lb)
2.25
Max Load (kg)
1.02
Max Load (gm)
1020.60
Max Extended Length - Build Spec. (in)
0.76
Max Extended Length (in)
0.76
Max Extended Length (mm)
19.41
Max Extended Length (cm)
1.94
Body Length - Build Spec. (in)
0.34
Body Length (in)
0.34
Body Length (mm)
8.64
Body Length (cm)
0.86
Loop Inside Diameter - Build Spec. (in)
0.10
Loop Inside Diameter (in)
0.10
Loop Inside Diameter (mm)
2.49
Loop Inside Diameter (cm)
0.25
Loop Position
Inline
Loop Opening - Build Spec. (in)
0.02
Loop Opening (in)
0.02
Loop Opening (mm)
0.48
Loop Opening (cm)
0.05
Max Load (N)
10.01
Inside Diameter - Build Spec (in)
0.10
Model Code
LEM

Extension Spring: OD 3.51 mm, FL 12.5 mm, Stainless Steel

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM050AB 02 S is a precision extension spring from the Standard Extension Series (metric) series, engineered for applications requiring reliable quality extension springs. This spring features a 3.51-mm outside diameter (0.138 inch) with 2.49-mm loop inside diameter (0.098 inch) and extends from a free length of 12.5 mm (0.492 inch) to a maximum extended length of 19.41 mm (0.764 inch). Made from Stainless Steel with a 0.48-mm wire diameter (0.019 inch), the spring delivers a spring rate of 1.221 N/mm (6.97 lb/inch) through its 16 total coils with an initial tension of 1.472 N (0.331 lb) for predictable extension behavior. The spring supports a maximum load of 10.008 N (2.25 lb) at full extension with a body length of 8.64 mm (0.34 inch). The spring features Inline 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 (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

268431
Product Extension OD 0.138 in, Length 0.492 in, Stainless Steel
Product Extension OD 3.51 mm, Length 12.5 mm, Stainless Steel
Part Number LEM050AB 02 S
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.138
Outside Diameter (cm) 0.351
Outside Diameter (mm) 3.51
Wire Diameter (inch) 0.019
Wire Diameter (cm) 0.048
Wire Diameter (mm) 0.48
Max Load (gm) 1020.6
Max Load (lb) 2.25
Max Load (kg) 1.0206
Max Load (N) 10.008
Rate (gm/cm) 1245
Rate (gm/mm) 124.5
Rate (kg/cm) 1.245
Rate (kg/mm) 0.1245
Rate (lb/in) 6.97
Rate (N/cm) 12.21
Rate (N/mm) 1.221
Max Extended Length (cm) 1.941
Max Extended Length (in) 0.764
Max Extended Length (mm) 19.41
Initial Tension (gm) 150.1
Initial Tension (kg) 0.1501
Initial Tension (lb) 0.331
Initial Tension (N) 1.472
Free Length (cm) 1.25
Free Length (inch) 0.492
Free Length (mm) 12.5
Material Stainless Steel
Loop Inside Diameter (cm) 0.249
Loop Inside Diameter (in) 0.098
Loop Inside Diameter (mm) 2.49
Ends Standard Loops
Loop Position Inline
Direction of Wind Factory Option
Finish Passivate per ASTM A967
0.019 0.138 0.006 0.492 0.02 16 0.331 0.066 6.97 0.697 0.764 2.25 0.019 0.34 Inline 0.138 0.006 0.492 0.02 16 0.331 0.066 6.97 0.697 0.764 2.25
Default View
Side view
Top view
Quantity Price
1 - 19 $9.210
20 - 49 $5.600
50 - 99 $2.960
100 - 199 $1.870
200 - 299 $1.632
300 - 399 $1.522
400 - 499 $1.442
500 - 599 $1.381
600 - 699 $1.331
700 - 799 $1.288
800 - 899 $1.251
900 - 999 $1.220
1000 $1.190

Why Choose Lee Spring?

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on Stock Springs in the Continental United States

FREE Plating

on all Music Wire Stock Springs

FREE Grinding

on all Standard Stock Compression Springs

Expert Engineering Assistance

on Stock and Custom Springs

Certificate of Compliance

on all Stock Springs and Custom Springs

Guaranteed RoHS Compliance

on all Stock Springs

Live Customer Service Support

at all Locations

Enhanced CAD Downloads

on Stock Springs Designs

Global Flexibility

allows Lee Spring to find solutions that meet your
geographic requirements wherever your business
takes you in the world