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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

CI 008AB 04M

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
11.150
Product Series
Published Stock Code
CI008AB04M
Product Type
Compression Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
0.71
Rate (kg/cm)
0.72
Rate (lb/in)
4.04
Rate (gm/mm)
72.06
Weight per Item (lb)
0.00
Material Specification
ASTM A228
Free Length (cm)
0.795
Free Length (inch)
0.313
Free Length (mm)
7.950
Free Length - Build Spec (in)
0.31
Free Length Tolerance (cm)
0.05
Free Length Tolerance (in)
0.02
Free Length Tolerance (mm)
0.46
Free Length Tolerance - Build Spec (in)
0.02
Hole Diameter (cm)
0.20
Hole Diameter (inch)
0.08
Hole Diameter (mm)
1.98
Inside Diameter (cm)
0.12
Inside Diameter (in)
0.05
Inside Diameter (mm)
1.19
Outside Diameter (cm)
0.160
Outside Diameter (in)
0.06
Outside Diameter (mm)
1.60
Outside Diameter - Build Spec (in)
0.06
Rate (gm/cm)
720.60
Rate (kg/mm)
0.07
Rate (N/cm)
7.07
Rate - Build Spec (lb/in)
4.04
Rate Tolerance (gm/cm)
72.15
Rate Tolerance (gm/mm)
7.22
Rate Tolerance (kg/cm)
0.07
Rate Tolerance (kg/mm)
0.01
Rate Tolerance (lb/in)
0.40
Rate Tolerance (N/cm)
0.71
Rate Tolerance (N/mm)
0.07
Rate Tolerance - Build Spec (lb/in)
0.40
Rod Diameter (cm)
0.11
Rod Diameter (inch)
0.04
Rod Diameter (mm)
1.07
Solid Height (cm)
0.25
Solid Height (inch)
0.10
Solid Height (mm)
2.54
Total Coils - Build Spec
11.15
Wire Diameter (cm)
0.02
Wire Diameter (inch)
0.01
Wire Diameter (mm)
0.20
Wire Diameter - Build Spec (in)
0.01
Hole Diameter - Build Spec. (in)
0.08
Rod Diameter - Build Spec. (in)
0.04
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)
0.10
Material Short Description
MW
Load at Solid Height (lb)
0.85
Load at Solid Height - Build Spec. (lb)
0.85
Load at Solid Height (N)
3.80
Load at Solid Height (kg)
0.39
Load at Solid Height (gm)
387.15
Active Coils - Build Spec.
9.15
Active Coils
9.15
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
Outside Diameter Tolerance (in)
+/-0.003
Outside Diameter Tolerance (mm)
+/-0.08
Outside Diameter Tolerance - Build Spec (in)
+/-0.003
Inside Diameter - Build Spec (in)
0.05
Outside Diameter Lower Tolerance (in)
0.00
Outside Diameter Upper Tolerance (in)
0.00
Outside Diameter Upper Tolerance (mm)
0.08
Outside Diameter Lower Tolerance (mm)
0.08
Model Code
CI

Instrument Compression Series (inch) Compression Springs

Precision Springs for Precision Products .

Lee Spring CI 008AB 04M 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 0.063-inch outside diameter (1.6 mm) with a 0.078-inch hole diameter (1.98 mm) and extends to a free length of 0.313 inch (7.95 mm), making it ideal for instruments and assemblies where consistent and precise compression characteristics are critical. Made from Music Wire with a 0.008-inch wire diameter (0.2 mm), the spring delivers a spring rate of 4.035 lb/inch (0.707 N/mm) through its 9.15 active coils out of 11.15 total coils for predictable deflection behavior. The spring compresses to a solid height of 0.1 inch (2.54 mm) while supporting a maximum load of 0.854 lb (3.8 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

288551
Product Compression OD 0.063 in, Length 0.313 in, Music Wire
Product Compression OD 1.6 mm, Length 7.95 mm, Music Wire
Part Number CI 008AB 04M
Series Instrument Compression Series (inch)
Outside Diameter (inch) 0.063
Outside Diameter (cm) 0.16
Outside Diameter (mm) 1.6
Hole Diameter (inch) 0.078
Hole Diameter (cm) 0.198
Hole Diameter (mm) 1.98
Rod Diameter (inch) 0.042
Rod Diameter (cm) 0.107
Rod Diameter (mm) 1.07
Free Length (inch) 0.313
Free Length (cm) 0.795
Free Length (mm) 7.95
Rate (gm/mm) 72.06
Rate (kg/cm) 0.721
Rate (kg/mm) 0.0721
Rate (lb/inch) 4.035
Rate (gm/cm) 720.6
Rate (N/cm) 7.07
Rate (N/mm) 0.707
Solid Height (inch) 0.1
Solid Height (cm) 0.254
Solid Height (mm) 2.54
Wire Diameter (inch) 0.008
Wire Diameter (cm) 0.02
Wire Diameter (mm) 0.2
Material Music Wire
Load at Solid Height (gm) 387.15
Load at Solid Height (kg) 0.387
Load at Solid Height (lb) 0.854
Load at Solid Height (N) 3.8
Ends Squared
Active Coils 9.15
Direction of Wind Factory Option
Finish Pre-coated with Tin
Total Coils 11.15
0.008 0.063 0.003 0.003 0.078 0.042 0.313 0.018 11.15 4.035 0.404 0.1001 0.854 0.008 0.313 0.063 0.2 1.6 0.08 1.98 1.07 7.95 0.457 0.707 2.54 3.8
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 $1.162
300 - 399 $1.052
400 - 499 $0.953
500 - 599 $0.866
600 - 699 $0.787
700 - 799 $0.723
800 - 899 $0.668
900 - 999 $0.623
1000 $0.589

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