Compression Springs
A compression spring is designed to operate with a compression load, so the spring gets shorter as the load is applied to it as opposed to a tension or extension spring that is designed to operate with a tension load, so the spring stretches as the load is applied to it.
Stock sizes in music wire
Associated Spring Raymond provides design engineers, draftsmen, production and maintenance departments with a broad variety of precision-engineered helical compression springs. They are reliable, inexpensive and efficient — the right combination for general-purpose use throughout industry.
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Materials
Part numbers starting with C in the following pages:
Music Wire ASTM A228 or AMS 5112
(Chemical and Physical only)
Part numbers starting with D in the following pages:
Music Wire DIN 17223 or JIS G4314 SWP-AIB or AMS 5112
Music wire will be furnished unless stainless steel is specified. When inquiring or ordering, please use letter “M” as suffix to designate music wire.
Music wire springs are not recommended for applications where the temperature exceeds 121°C (250°F).
Wire diameter is prior to forming.
No charge for certificate of compliance when requested; certificate of chemical analysis available only for part numbers starting with C in the following pages (an additional charge applies).
Coil Direction (helix)
Right hand, Coil count is for reference only.
Free length
Free length is reference only.
Ends
Part numbers starting with C in the following pages:
O.D. sizes from 0.057-0.088111 (1.45-2.24mm) squared not ground.
O.D. sizes from 0.120-1.937in (3.05-49.20mm): squared and ground.
However springs with wire diameter <= 0.020" (.5mm) may be squared not ground.
Part numbers starting with D in the follcming pages:
Wire up to and including 0.8mm (0.030in) squared and not ground.
Wire greater than 0.8mm (0.030in) squared and ground.
Tolerances
Part numbers starting with C in the following pages:
| O.D. (English) |
O.D. (Metric) |
| 0.057 to 0.119" +/- 0.003" |
1.45 to 3.02 mm +/- 0.08 mm |
| 0.120 to 0.240" +/- 0.005" |
3.05 to 6.10 mm+/- 0.13 mm |
| 0.241 to 0.500" +/- 0.008" |
6.12 to 12.70 mm+/- 0.20 mm |
| 0.501 to 1.000" +/- 0.015" |
12.73 to 25.40 mm+/- 0.38 mm |
| 1.001 to 1.225" +/- 0.020" |
25.43 to 31.12 mm +/- 0.51 mm |
| 1.266 to 1.460" +/- 0.030" |
31.14 to 37.08 mm +/- 0.76 mm |
| 1.461 to 2.00" +/- 0.040" |
37.11 to 50.80 mm +/- 1.02 mm |
Part numbers starting with D in the following pages:
All dimensions, loads and rates listed are to DIN 2095 (Grade 2).
Loads & Spring Rate
Load and rate values are shown for music wire in their respective columns.
Load P at L1 and spring rate R are +/-10.0% — load at any other point is for reference only.
For normal service, springs should not be compressed below L1 (may take set beyond L1). Load values at lengths other than l" can be approximated by multiplying the proposed deflection by the rate R. P = (L-Lx) x R where Lx is the new load height. Load at Lx should be reference only. Contact our engineering department if more stringent requirements are needed.
Surface Finish
Oil
Packaging
Parts are bulk-packed. Due to physical characteristics, tangling can occur during transit on wire sizes under .035" (.89mm). Please inquire about special packaging when ordering.
OD = Outside diameter
d = Wire diameter
Sh = Approx Solid Height
L = Free length (reference use only)
L1 = Loaded length (minimum working length)
P = Load at L1
SPEC Compression springs are also available in various materials such as:
- Hard Drawn Steel
- Inconel®
- Oil Tempered Wire
- Monel®
- Chrome Vanadium
- Beryllium Copper
- Chrome Silicon
- Elgiloy®
- Phosphor Bronze
- Zinc Coated Music Wire
Please contact Associated Spring Raymond's engineering team for design and application assistance.
Stock sizes in 316 stainless steel
Associated Spring Raymond now offers a complete line of 316 Stainless Steel compression springs. 316 Stainless steel provides superior temperature and corrosion resistance, which makes it particularly suitable for:
- Medical, surgical, veterinary and pharmaceutical applications
- Food and food preparation machinery and equipment
- Marine, aircraft and aerospace uses
- Harsh environment projects
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Materials
Stainless Steel Type 316 per ASTMA313 (Chemical and Physical only)
Stainless steel is not recommended above 300°C. (570°F).
Stainless steel 316 is slightly magnetic due to cold working during manufacturing. Stainless steel springs may have a slight residue of nickel on the surface of the wire. This is normal and will not affect the function of the part.
Wire diameter is prior to forming.
No charge for certificate of compliance when requested; certificate of chemical analysis also available (an additional charge applies).
Coil Direction (helix)
Right hand. Coil count is for reference only.
Free Length
Free length is reference only.
Ends
O.D. sizes from 0.057-0.088in (1.45-2.24mm); squared not ground.
O.D. sizes from 0.120-1.937in (3.05-49.20mm); squared and ground.
However springs with wire diameter <= 0.020" (.5mm) may be squared not ground.
Tolerances
| O.D. (English) |
O.D. (Metric) |
| 0.057 to 0.119" +/- 0.003" |
1.45 to 3.02 mm +/- 0.08 mm |
| 0.120 to 0.240" +/- 0.005" |
3.05 to 6.10 mm+/- 0.13 mm |
| 0.241 to 0.500" +/- 0.008" |
6.12 to 12.70 mm+/- 0.20 mm |
| 0.501 to 1.000" +/- 0.015" |
12.73 to 25.40 mm+/- 0.38 mm |
| 1.001 to 1.225" +/- 0.020" |
25.43 to 31.12 mm +/- 0.51 mm |
| 1.266 to 1.460" +/- 0.030" |
31.14 to 37.08 mm +/- 0.76 mm |
| 1.461 to 2.00" +/- 0.040" |
37.11 to 50.80 mm +/- 1.02 mm |
Loads & Spring Rate
Load P at L1 and spring rate R are +/- 10.0% — load at any other point is for reference only.
For normal service, springs should not be compressed below L1 (may take set beyond Ll). Load values at lengths other than Ll can be approximated by multiplying the proposed deflection by the rate R. P = (L - Lx) x R where
Lx is the new load height. Load at Lx should be reference only. Contact our engineering department if more stringent requirements are needed.
Surface Finish
Plain wire, passivated per ASTM A967
Special finishes available upon request.
Packaging
Parts are bulk-packed. Due to physical characteristics, tangling can occur during transit on wire sizes under .035" (.89mm). Please inquire about ultrasonic cleaning and special packaging when ordering.
Stock sizes in chromium alloy steel
Associated Spring Raymond now offers an additional line to complement our current line of music wire and stainless steel springs. These items offer high performance, in dimensions not available in our standard music wire and stainless steel line.
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Materials
Either Chrome Vanadium or Chrome Silicon will be supplied, based on availability at time of shipment. Not recommended for applications where the temperature exceeds 415°F (110°C).
Wire diameter is prior to forming
Certificate of Conformance is available at no charge, Certificate of chemical analysis is not available.
Coil direction
Right Hand (RH) or left Hand (LH) as per the following tables.
Free Length
Free length is reference or approximate only.
Ends
Part numberss starting with COO168, C00170, C00186, COO200, C00257, C00309,
C00347 and COO395 are squared only. All others are squared and ground.
Loads and Spring Rates
Rate is calculated and should be used as a reference only. Load (P) at L1 is +/- 10%.
ID and OD tolerances
High performance springs are designed to fit in a hole and over a shaft as specified in the table.
Finish & Packaging
Standard finish is oil. Special finishes upon request. Parts are bulk packed, so tangling can occur during transit on wire sizes under 0.89mm (0.035"). Please inquire about special packaging when ordering.
Stock sizes in stainless steel
Associated Spring Raymond provides design engineers, draftsmen, production and maintenance departments with a broad variety of precision-engineered helical compression springs. They are reliable, inexpensive and efficient — the right combination for general-purpose use throughout industry.
Click for Larger Version
Materials
Part numbers starting with C in the following pages:
Stainless Steel Type 302 per ASTM A313 or AMS 5688 spring temper
(Chemical and Physical only)
Part numbers starting with D in the following pages:
Stainless Steel: Type 301,302 or 304 per DIN 17224 or JIS G4314 SUS 302/304 or AMS 5688 spring temper (chemical and physical only)
Stainless steel is slightly magnetic due to cold working during manufacturing. Stainless steel springs may have a slight residue of nickel on the surface of the wire. This is normal and will not effect the
function of the part.
Wire diameter is prior to forming.
No charge for certificate of compliance when requested; certificate of chemical analysis available only for part numbers starting with C in the following pages (an additional charge applies).
Coil Direction (helix)
Right hand, Coil count is for reference only.
Free length
Free length is reference only.
Ends
Part numbers starting with C in the following pages:
O.D. sizes from 0.057-0.088111 (1.45-2.24mm) squared not ground.
O.D. sizes from 0.120-1.937in (3.05-49.20mm): squared and ground.
However springs with wire diameter <= 0.020" (.5mm) may be squared not ground.
Part numbers starting with D in the following pages:
Wire up to and including 0.8mm (0.030in) squared and not ground.
Wire greater than 0.8mm (0.030in) squared and ground.
Tolerances
Part numbers starting with C in the following pages:
| O.D. (English) |
O.D. (Metric) |
| 0.057 to 0.119" +/- 0.003" |
1.45 to 3.02 mm +/- 0.08 mm |
| 0.120 to 0.240" +/- 0.005" |
3.05 to 6.10 mm+/- 0.13 mm |
| 0.241 to 0.500" +/- 0.008" |
6.12 to 12.70 mm+/- 0.20 mm |
| 0.501 to 1.000" +/- 0.015" |
12.73 to 25.40 mm+/- 0.38 mm |
| 1.001 to 1.225" +/- 0.020" |
25.43 to 31.12 mm +/- 0.51 mm |
| 1.266 to 1.460" +/- 0.030" |
31.14 to 37.08 mm +/- 0.76 mm |
| 1.461 to 2.00" +/- 0.040" |
37.11 to 50.80 mm +/- 1.02 mm |
Part numbers starting with D in the following pages:
All dimensions, loads and rates listed are to DIN 2095 (Grade 2).
Loads & Spring Rate
Load and rate values are shown for stainless steel in their respective columns.
Load P at L1 and spring rate R are +/-10.0% — load at any other point is for reference only.
For normal service, springs should not be compressed below L1 (may take set beyond L1). Load values at lengths other than l" can be approximated by multiplying the proposed deflection by the rate R. P = (L-Lx) x R where Lx is the new load height. Load at Lx should be reference only. Contact our engineering department if more stringent requirements are needed.
Surface Finish
Oil
Packaging
Parts are bulk-packed. Due to physical characteristics, tangling can occur during transit on wire sizes under .035" (.89mm). Please inquire about special packaging when ordering.
OD = Outside diameter
d = Wire diameter
Sh = Approx Solid Height
L = Free length (reference use only)
L1 = Loaded length (minimum working length)
P = Load at L1
SPEC Compression springs are also available in various materials such as:
- Hard Drawn Steel
- Inconel®
- Oil Tempered Wire
- Monel®
- Chrome Vanadium
- Beryllium Copper
- Chrome Silicon
- Elgiloy®
- Phosphor Bronze
- Zinc Coated Music Wire
Please contact Associated Spring Raymond's engineering team for design and application assistance.
Stock sizes in chrome alloy steel
The use of high quality chrome alloy steel combines maximum load with long life. Designed to work in a pocket or over a shaft, our SPEC heavy duty springs are ideally suited for applications where high loads are needed, and limited space is available.
Tolerances
Free length is for reference only. O.D. and I.D. are designed to fit in hole or over rod as specified in the table below. Outside diameters are dimensioned to allow a minium of .020" (.51mm) clearance in the specified hole diameter when the spring is in the free state.
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Material
Chrome Silicon per Associated Spring SV 9254 - rectangular wire with rounded corners.
Direction of Helix
Right hand.
Ends
Squared and ground.
Finish
Standard finish is that of the normal wire. Due to residual stresses induced during the manufacturing process. Electroplating is not recommended. Other finished available on request.