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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LE 031D 03 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
18.900
Published Stock Code
LE031D03S
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.26
Rate (kg/cm)
0.27
Rate (lb/in)
1.50
Rate (gm/mm)
26.80
Weight per Item (lb)
0.01
Material Specification
ASTM A313
Free Length (cm)
3.175
Free Length (inch)
1.250
Free Length (mm)
31.750
Free Length - Build Spec (in)
1.25
Free Length Tolerance (cm)
0.09
Free Length Tolerance (in)
0.04
Free Length Tolerance (mm)
0.89
Free Length Tolerance - Build Spec (in)
0.04
Inside Diameter (cm)
0.80
Inside Diameter (in)
0.31
Inside Diameter (mm)
7.95
Outside Diameter (cm)
0.953
Outside Diameter (in)
0.38
Outside Diameter (mm)
9.53
Outside Diameter - Build Spec (in)
0.38
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)
268.00
Rate (kg/mm)
0.03
Rate (N/cm)
2.63
Rate - Build Spec (lb/in)
1.50
Rate Tolerance (gm/cm)
26.80
Rate Tolerance (gm/mm)
2.68
Rate Tolerance (kg/cm)
0.03
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.15
Rate Tolerance (N/cm)
0.26
Rate Tolerance (N/mm)
0.03
Rate Tolerance - Build Spec (lb/in)
0.15
Total Coils - Build Spec
18.91
Wire Diameter (cm)
0.08
Wire Diameter (inch)
0.03
Wire Diameter (mm)
0.79
Wire Diameter - Build Spec (in)
0.03
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)
0.25
Initial Tension (lb)
0.25
Initial Tension (N)
1.11
Initial Tension (kg)
0.11
Initial Tension (gm)
113.40
Initial Tension Tolerance - Build Spec. (lb)
0.05
Initial Tension Tolerance (lb)
0.05
Initial Tension Tolerance (N)
0.22
Initial Tension Tolerance (kg)
0.02
Initial Tension Tolerance (gm)
22.67
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
2.83
Max Load (lb)
2.83
Max Load (kg)
1.28
Max Load (gm)
1284.70
Max Extended Length - Build Spec. (in)
2.97
Max Extended Length (in)
2.97
Max Extended Length (mm)
75.44
Max Extended Length (cm)
7.54
Body Length - Build Spec. (in)
0.62
Body Length (in)
0.62
Body Length (mm)
15.85
Body Length (cm)
1.59
Loop Inside Diameter - Build Spec. (in)
0.31
Loop Inside Diameter (in)
0.31
Loop Inside Diameter (mm)
7.95
Loop Inside Diameter (cm)
0.80
Loop Position
Random
Loop Opening - Build Spec. (in)
0.03
Loop Opening (in)
0.03
Loop Opening (mm)
0.79
Loop Opening (cm)
0.08
Max Load (N)
12.60
Inside Diameter - Build Spec (in)
0.31
Model Code
LE

Standard Extension Series (inch)

Selection to Match Your Needs

Lee Spring LE 031D 03 S is a precision extension spring from the Standard Extension Series (inch), engineered for applications requiring reliable quality extension springs. This spring features a 0.375-inch outside diameter (9.53 mm) with 0.313-inch loop inside diameter (7.95 mm) and extends from a free length of 1.25 inch (31.75 mm) to a maximum extended length of 2.97 inch (75.44 mm). Made from Stainless Steel with a 0.031-inch wire diameter (0.79 mm), the spring delivers a spring rate of 1.5 lb/inch (0.263 N/mm) through its 18.9 total coils with an initial tension of 0.2499 lb (1.112 N). The spring supports a maximum load of 2.8322 lb (12.598 N) at full extension with a body length of 0.624 inch (15.85 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

245941
Product Extension OD 0.375 in, Length 1.25 in, Stainless Steel
Product Extension OD 9.53 mm, Length 31.75 mm, Stainless Steel
Part Number LE 031D 03 S
Series Standard Extension Series (inch)
Outside Diameter (inch) 0.375
Outside Diameter (cm) 0.953
Outside Diameter (mm) 9.53
Wire Diameter (inch) 0.031
Wire Diameter (cm) 0.079
Wire Diameter (mm) 0.79
Max Load (gm) 1284.7
Max Load (lb) 2.8322
Max Load (kg) 1.2847
Max Load (N) 12.598
Rate (gm/cm) 268
Rate (gm/mm) 26.8
Rate (kg/cm) 0.268
Rate (kg/mm) 0.0268
Rate (lb/in) 1.5
Rate (N/cm) 2.63
Rate (N/mm) 0.263
Max Extended Length (cm) 7.544
Max Extended Length (in) 2.97
Max Extended Length (mm) 75.44
Initial Tension (gm) 113.4
Initial Tension (kg): 0.1134
Initial Tension (lb) 0.2499
Initial Tension (N) 1.112
Free Length (cm) 3.175
Free Length (inch) 1.25
Free Length (mm) 31.75
Material Stainless Steel
Loop Inside Diameter (cm) 0.795
Loop Inside Diameter (in) 0.313
Loop Inside Diameter (mm) 7.95
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Passivate per ASTM A967
0.031 0.375 0.01 1.25 0.035 18.9 0.2499 0.04998 1.5 0.15 2.97 2.8322 0.031 0.624 Random 0.375 0.01 1.25 0.035 18.9 0.2499 0.04998 1.5 0.15 2.97 2.8322
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 $1.385
300 - 399 $1.323
400 - 499 $1.266
500 - 599 $1.215
600 - 699 $1.172
700 - 799 $1.132
800 - 899 $1.102
900 - 999 $1.077
1000 $1.055

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