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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

CI 012D 11 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Squared
Finish
Pre-coated with Tin
Material
Music Wire
Total Coils
20.990
Product Series
Published Stock Code
CI012D11M
Product Type
Compression Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.23
Rate (kg/cm)
0.23
Rate (lb/in)
1.30
Rate (gm/mm)
23.22
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
2.858
Free Length (inch)
1.125
Free Length (mm)
28.580
Free Length - Build Spec (in)
1.13
Free Length Tolerance (cm)
0.10
Free Length Tolerance (in)
0.04
Free Length Tolerance (mm)
0.99
Free Length Tolerance - Build Spec (in)
0.04
Hole Diameter (cm)
0.32
Hole Diameter (inch)
0.13
Hole Diameter (mm)
3.18
Inside Diameter (cm)
0.24
Inside Diameter (in)
0.10
Inside Diameter (mm)
2.44
Outside Diameter (cm)
0.305
Outside Diameter (in)
0.12
Outside Diameter (mm)
3.05
Outside Diameter - Build Spec (in)
0.12
Rate (gm/cm)
232.20
Rate (kg/mm)
0.02
Rate (N/cm)
2.28
Rate - Build Spec (lb/in)
1.30
Rate Tolerance (gm/cm)
22.32
Rate Tolerance (gm/mm)
2.23
Rate Tolerance (kg/cm)
0.02
Rate Tolerance (kg/mm)
0.00
Rate Tolerance (lb/in)
0.13
Rate Tolerance (N/cm)
0.22
Rate Tolerance (N/mm)
0.02
Rate Tolerance - Build Spec (lb/in)
0.13
Rod Diameter (cm)
0.22
Rod Diameter (inch)
0.09
Rod Diameter (mm)
2.24
Solid Height (cm)
0.69
Solid Height (inch)
0.27
Solid Height (mm)
6.91
Total Coils - Build Spec
20.99
Wire Diameter (cm)
0.03
Wire Diameter (inch)
0.01
Wire Diameter (mm)
0.30
Wire Diameter - Build Spec (in)
0.01
Hole Diameter - Build Spec. (in)
0.13
Rod Diameter - Build Spec. (in)
0.09
Rod Diameter Tolerance - Build Spec. (in)
MIN
Rod Diameter Tolerance (in)
MIN
Rod Diameter Tolerance (mm)
MIN
Rod Diameter Tolerance (cm)
MIN
Solid Height - Build Spec. (in)
0.27
Material Short Description
MW
Load at Solid Height (lb)
1.10
Load at Solid Height - Build Spec. (lb)
1.10
Load at Solid Height (N)
4.89
Load at Solid Height (kg)
0.50
Load at Solid Height (gm)
498.96
Active Coils - Build Spec.
18.99
Active Coils
18.99
Active Coils Tolerance - Build Spec.
Reference
Active Coils Tolerance
Reference
Product Series
Instrument Compression Series (inch)
Inside Diameter Tolerance (cm)
Reference
Inside Diameter Tolerance (in)
Reference
Inside Diameter Tolerance (mm)
Reference
Inside Diameter Tolerance - Build Spec (in)
Reference
Outside Diameter Tolerance (cm)
+0.008/-0.013
Outside Diameter Tolerance (in)
+0.003/-0.005
Outside Diameter Tolerance (mm)
+0.08/-0.13
Outside Diameter Tolerance - Build Spec (in)
+0.003/-0.005
Inside Diameter - Build Spec (in)
0.10
Outside Diameter Lower Tolerance (in)
0.01
Outside Diameter Upper Tolerance (in)
0.00
Outside Diameter Upper Tolerance (mm)
0.08
Outside Diameter Lower Tolerance (mm)
0.13
Model Code
CI

Compression Spring: OD 0.12 in, FL 1.125 in, Music Wire

Instrument Compression Series (inch) Compression Springs

Precision Springs for Precision Products .

Lee Spring CI 012D 11 M is a precision compression spring from the Instrument Compression Series (inch), engineered for applications requiring reliable performance in moderate-load scenarios. This spring features an 0.12-inch outside diameter (3.05 mm) with a 0.125-inch hole diameter (3.18 mm) and extends to a free length of 1.125 inch (28.58 mm), making it ideal for instruments and assemblies where consistent and precise compression characteristics are critical. Made from Music Wire with a 0.012-inch wire diameter (0.3 mm), the spring delivers a spring rate of 1.3 lb/inch (0.228 N/mm) through its 18.99 active coils out of 20.99 total coils for predictable deflection behavior. The spring compresses to a solid height of 0.272 inch (6.91 mm) while supporting a maximum load of 1.1 lb (4.89 N) at full compression. The spring has Squared ends and a Pre-coated with Tin finish for optimal performance.

About the Compression Spring Instrument Series

The Lee Spring Instrument Series includes a wide range of size and rate combinations in a smaller, highly precise spring design. Selections are sorted in ascending order to mating hole/bore diameter sizes. Instrument Compression Springs are available in both inch and metric series. Inch 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 made from coated wire or 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 Instrument Compression Springs feature squared ends. A squared end, also called a closed end, is made by reducing the coil pitch of the ends to zero. Squareness influences how a force produced by the spring can be transferred to adjacent parts

Instrument Compression Series (inch) Compression 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

296051
Product Compression OD 0.12 in, Length 1.125 in, Music Wire
Product Compression OD 3.05 mm, Length 28.58 mm, Music Wire
Part Number CI 012D 11 M
Series Instrument Compression Series (inch)
Outside Diameter (inch) 0.12
Outside Diameter (cm) 0.305
Outside Diameter (mm) 3.05
Hole Diameter (inch) 0.125
Hole Diameter (cm) 0.318
Hole Diameter (mm) 3.18
Rod Diameter (inch) 0.088
Rod Diameter (cm) 0.224
Rod Diameter (mm) 2.24
Free Length (inch) 1.125
Free Length (cm) 2.858
Free Length (mm) 28.58
Rate (gm/mm) 23.22
Rate (kg/cm) 0.232
Rate (kg/mm) 0.0232
Rate (lb/inch) 1.3
Rate (gm/cm) 232.2
Rate (N/cm) 2.28
Rate (N/mm) 0.228
Solid Height (inch) 0.272
Solid Height (cm) 0.691
Solid Height (mm) 6.91
Wire Diameter (inch) 0.012
Wire Diameter (cm) 0.03
Wire Diameter (mm) 0.3
Material Music Wire
Load at Solid Height (gm) 498.96
Load at Solid Height (kg) 0.499
Load at Solid Height (lb) 1.1
Load at Solid Height (N) 4.89
Ends Squared
Active Coils 18.99
Direction of Wind Factory Option
Finish Pre-coated with Tin
Total Coils 20.99
0.012 0.12 0.003 0.005 0.125 0.088 1.125 0.039 20.99 1.3 0.125 0.272 1.1 0.012 1.125 0.12 0.3 3.05 0.08 3.18 2.24 28.58 0.991 0.228 6.91 4.89
Default View
Side view
Top view
Quantity Price
1 - 19 $7.680
20 - 49 $4.650
50 - 99 $2.350
100 - 199 $1.510
200 - 299 $1.153
300 - 399 $1.034
400 - 499 $0.933
500 - 599 $0.841
600 - 699 $0.761
700 - 799 $0.689
800 - 899 $0.632
900 - 999 $0.586
1000 $0.552

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

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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