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1 TABLE OF CONTENTS INTRODUCTION Stock Spring Prices Inside Front Cover Guide to Lee Spring Part Numbers Specifications/Engineering Information Metric Conversion Table Conditions of Sale Glossary of Spring Terminology Regulatory Compliance and Certifications: (RoHS, DFARS, Traceability, Mil Spec) STOCK COMPRESSION SPRINGS Instrument Series (Inch) Instrument Series (Metric) Lite Pressure (Inch) Standard Series (Inch) Standard Series (Metric) Heavy Duty Series (Inch) STOCK REDUX WAVE SPRINGS STOCK HEFTY DIE SPRINGS HEFTY Overview HEFTY Medium Load Series HEFTY Medium Load Plus Series HEFTY Medium Heavy Load Series HEFTY Heavy Load Series HEFTY Extra Heavy Load Series HEFTY Spring Prices STOCK EXTENSION SPRINGS Instrument Series (Inch) Instrument Series (Metric) Standard Series (Inch) Standard Series (Metric) STOCK TORSION SPRINGS STOCK BELLEVILLE WASHERS SPECIALTY STOCK PARTS Constant Force Springs Battery Springs Continuous Length Extension Springs Spring Kits CUSTOM SPRINGS Overview Regulatory Compliance and Certifications: (RoHS, DFARS, Traceability, Mil Spec) Compression Spring Specification Form Coned Compression Spring Specification Form REDUX Wave Spring Specification Form Extension Spring Specification Form Coned Extension Spring Specification Form Drawbar Spring Specification Form Torsion Spring Specification Form Constant Force Specification Form Battery Spring Specification Form Belleville Washer Specification Form GO TO FOR ADDITIONAL STOCK ITEMS

2 GUIDE TO LEE SPRING PART NUMBERS COMPRESSION Series INSTRUMENT (Inch) CI INSTRUMENT (Metric) CIM LITE PRESSURE (Inch) LP STANDARD (Inch) LC STANDARD (Metric) LCM HEAVY DUTY (Inch) LHC HEFTY DIE SPRING Load MEDIUM LOAD A MEDIUM LOAD PLUS AB MEDIUM HEAVY B HEAVY LOAD C EXTRA HEAVY LOAD D EXTENSION SPRING Series INSTRUMENT (Inch) EI INSTRUMENT (Metric) EIM STANDARD (Inch) LE STANDARD (Metric) LEM TORSION Wind TORSION (Left Wind) L TORSION (Right Wind) R CONTINUOUS LENGTH EXTENSION SPRINGS Groups Springs with Same Outside Diameter (O.D.) WAVE SPRING HOLE DIAMETER CODE NOMINAL LOAD CODE HEFTY DIE SPRING HOLE DIAMETER CODE LOAD CODE INSIDE DIAMETER CODE MATERIAL THICKNESS CODE BATTERY SPRING BATTERY SPRING MOUNT TYPE CI 006 A 01M LHL 375 A 01 From Shortest to Longest within Series M = Music Wire S = Type 302 Stainless S316 = Type 316 Stainless REDUX WAVE SPRING Pg. 117 BELLEVILLE WASHERS BATTERY SPRINGS Mount Type INTERIOR MOUNT A EXTERIOR MOUNT B ADAPTABLE MOUNT C DOUBLE MOUNT D LE 014 A 01M STAINLESS STEEL Type 17-7 PH FREE HEIGHT CODE From Shortest to Longest within Series Groups Springs with Same From Shortest to Longest within Series Outside Diameter (O.D.) : M = Music Wire S = Type 302 Stainless LT L 012 A 01 M DIRECTION OF WIND L = Left Wind, R = Right Wind NUMBER CODE : M = Music Wire S = Type 302 Stainless LIFE CYCLES (100's) CODE LW S THICKNESS CODE LCF S LB 024 B 01 A LEC 014 A 12 STAINLESS STEEL Type 301 High Yield WIDTH CODE BATTERY SIZE CODE CODE Pg. 7 Pg. 121 Pg. 137 Pg. 173 Pg. 187 CONSTANT FORCE SPRINGS Pg. 193 Pg. 195 Pg. 196 CONTINUOUS LENGTH EXTENSION SPRING (12", 24" or 36") Groups springs with the Same Outside Diameter (OD) : M = Music Wire S = Type 302 Stainless 2

3 SPECIFICATIONS/ENGINEERING INFORMATION MATERIAL Music Wire per ASTM A228, DIN 17223, BS 5216, EN or JIS-G-3522 Stainless Steel Type 302 (304) OR Type 316 PER ASTM A313, DIN 17224, BS 2056, EN or JIS-G-4314 Oil Tempered MB per ASTM A229, DIN 17223, BS 2803 or EN Oil Tempered Chrome Silicon per ASTM A401, DIN 17223, BS 2803 or EN STRESS RELIEF All springs are stress relieved to remove coiling strains. PLATING All Lee Music Wire and Oil Tempered Standard and Heavy Duty Stock Springs are furnished zinc plated in accordance with specification ASTM B633 Class Fe/Zn 5 Type III (.0002 thick with clear chromate) and baked for hydrogen embrittlement relief. All Lee Music Wire Instrument Compression and Extension Springs are furnished zinc plated or tin coated without supplemental zinc plating. Lee Spring Stock Springs are manufactured RoHS compliant and do not use Cadmium, Lead, Mercury, Hexavalent Chromium, Polybrominated biphenyl (PBB) or Polybrominated Diphenyl Ether (PBDE) in plating or any other processes. Lee Spring products are exempt from the OSHA Hazardous Communication Standard. All Lee Spring Stainless Steel Standard and Heavy Duty Stock Springs or Instrument Springs are furnished passivated in accordance with specification ASTM A967 (supercedes QQ-P-35). DIRECTION OF WIND Left or Right (Lee Spring option) ENDS Compression Springs Standard and Heavy Duty Series Squared and ground (squareness within 3 ). Instrument and Lite Pressure Series Squared, not ground EXTENSION SPRINGS Instrument and Standard Series Full diameter loops at random position Loop openings of approximately one wire diameter.057 to.094 O.D. ± to.250 O.D to.500 O.D. ± to.850 O.D. ± to O.D. ± to O.D. ± to O.D. ± to O.D. ± to O.D. ±.055 Spring rate: ± 10% TOLERANCES Compression and Extension Diameters 1.45mm to 2.36mm ±.08mm 2.59mm to 6.10mm +.13mm.08mm 7.62mm to 12.70mm ±.20mm 13.97mm to 21.59mm ±.38mm 22.23mm to 28.58mm ±.51mm 29.21mm to 30.94mm ±.64mm 31.75mm to 37.08mm ±.76mm 37.59mm to 42.85mm ± 1.02mm 49.20mm to 50.80mm ± 1.40mm Solid height: + 5%, no lower limit NOTES 1. Spring rates, maximum loads and initial tension shown in catalog are for Music Wire. For Stainless Steel, multiply figures shown by 5/6 (.833). 2. COMPRESSION SPRINGS To find the load at any working length, when free length and rate are given, use the formula: P = R x F where P is the load in lbs.; R is the rate in lbs. per inch; F is the deflection from free length. Example: (Lee Stock Spring Catalog #LC 032C 08M) Given a free length of.750 and a rate of 22 pounds per inch, find the load at.500 working length. P = 22 x ( ) = 22 x.250 = 5.5lbs. 3. EXTENSION SPRINGS To find the load at any working length, when the free length, rate and initial tension are given, use the formula: P= (R x F) + I.T. where P is the load in lbs.; R is the rate in lbs. per inch; F is the deflection from free length; I.T. is the initial tension. Example: (Lee Stock Spring Catalog #LE 031C 01M) Given a free length of 1, a rate of 6.9 pounds per inch, and.7 pounds initial tension, find the load at P = [6.9 x ( )] +.7 = (6.9 x.500) +.7 = = 4.15 lbs. 4. HOW TO DETERMINE RATE Rate, which is the change in load per unit deflection, may be tested by the following procedure: 1. Deflect spring to approximately 20 percent of total available deflection (free length, minus solid height) and measure load (P 1 ) and spring length (L 1 ). 2. Deflect spring not more than 80 percent of total available deflection and measure load (P 2 ) and spring length (L 2 ). Be certain that no coils (other than closed ends) are touching at L Calculate rate (R) lb. per in. R = (P 2 - P 1 ) (L 1 - L 2 ) If you cannot find the Stock Spring you need in our print or on-line catalogs, use the Custom Spring Specifications Forms on pages , submit your specification at or contact our Engineering Department at (888) , Extension 3. METRIC CONVERSION TABLE FORCE To convert: Newtons to Kilograms...Multiply by Newtons to Pounds...Multiply by Kilograms to Newtons...Multiply by Kilograms to Pounds...Multiply by Pounds to Newtons...Multiply by Pounds to Kilograms...Multiply by RATE To convert: KG/MM to LB/IN.... Multiply by KG/MM to N/MM...Multiply by LB/IN. to KG/MM...Multiply by LB/IN. to N/MM...Multiply by N/MM to KG/MM...Multiply by N/MM to LB/IN....Multiply by LENGTH To convert: Inches to Meters...Multiply by Millimeters to Meters...Multiply by Inches to Feet...Multiply by Millimeters to Feet...Multiply by Inches to Millimeters...Multiply by 25.4 Millimeters to Inches...Multiply by Conditions of Sale TERMS: Net 30 days from date of invoice to all accredited customers. All purchases are subject to Lee Spring s Standard Terms and Conditions of Sale, as described below and in our invoice. No other terms and conditions apply to any purchase order. All prices are in U.S. Dollars. We accept American Express (Amex), Master Card (MC), and Visa. CERTIFICATES OF COMPLIANCE: Lee Spring will supply Certificates of Compliance at no charge with every order. RAW MATERIAL CERTIFICATION: Material Traceability (chemical and/or physical) Certifications are available only on Special Orders at an additional charge. SHIPMENTS: Free Standard Ground Shipping on Stock Springs within the continental United States. SHORTAGES: All claims for shortages must be filed within 15 days from customer s receipt of shipment. RETURNS AND RESTOCKING: All returns require a Return Material Authorization (RMA) number. Returns may incur restocking charges. Please call Lee Spring Customer Service toll free at to obtain an RMA number prior to returning any merchandise. PRICING: All Prices are Subject to change without notice. Prices are based on Lee Spring s standard packaging. ORDER ACCEPTANCE: Orders for 100 pieces or under will only be accepted with a delivery date less than 90 days from the purchase order date. 3

4 GLOSSARY OF SPRING TERMINOLOGY Active Coils those coils which are free to deflect under load. Allow for Set spring is supplied longer than specified to compensate for length loss when fully compressed in assembly by customer. Usually recommended for large quantity orders to reduce cost. Angular Relationship of Ends the relative position of the plane of the hooks or loops of extension springs to each other. Blue a thin blue film of oxide on ferrous alloys, sometimes used to indicate that the material has been stress relieved. Baking heating of electroplated springs to relieve hydrogen embrittlement. Buckling bowing or lateral deflection of compression springs when compressed, related to the slenderness ratio (L/D). Closed Ends ends of compression springs where pitch of the end coils is reduced so that the end coils touch. Closed and Ground Ends same as with closed ends, except that the end is ground to provide a flat plane. Closed Length see Solid Height. Close-Wound coiled with adjacent coils in contact. Coils Per Inch see Pitch. Deflection Motion of spring ends or arms under the application or removal of an external load. Elastic Limit maximum stress to which a material may be subjected without producing permanent set. Endurance Limit maximum stress at which any given material will operate indefinitely without failure for a given minimum stress. Free Angle angle between the arms of a torsion spring when the spring is not loaded. Free Length the overall length of a spring in the unloaded position. Frequency (natural) the lowest inherent rate of free vibration of a spring itself (usually in cycles per second) with ends restrained. Gradient see Rate. Heat Setting fixturing a spring at elevated temperature to minimize loss of load at operating temperature. Helix the spiral form (open or closed) of compression, extension and torsion springs. Hooks open loops or ends of extension springs. Hot Pressing see Heat Setting. Hydrogen Embrittlement hydrogen absorbed in electroplating or pickling of carbon steels, tending to make the spring material brittle and susceptible to cracking and failure, particularly under sustained loads. Hysteresis the mechanical energy loss that always occurs under cyclic loading and unloading of a spring, proportional to the area between the loading and unloading load-deflection curves within the elastic range to a spring. Initial Tension the force that keeps the coils of an extension spring closed and which must be overcome before the coils start to open. Load the force applied to a spring that causes a deflection. Loops coil-like wire shapes at the ends of extension springs that provide for attachment and force application. Mean Coil Diameter outside spring diameter minus one wire diameter. Modulus in Shear or Torsion coefficient of stiffness for extension and compression springs. Modulus in Tension or Bending coefficient of stiffness used for torsion and flat springs (Young s Modulus). Moment see Torque. Open Ends, Not Ground end of a compression spring with a constant pitch for each coil. Open and Ground End open ends, not ground followed by an end grinding operation. Passivating acid treatment of stainless steel to remove contaminants and improve corrosion resistance. Permanent Set a material that is deflected so far that its elastic properties have been exceeded and it does not return to its original condition upon release of load is said to have taken a permanent set. Pitch the distance from center to center of the wire in adjacent active coils (recommended practice is to specify number of active coils rather than pitch). Preset see Remove Set. Rate change in load per unit deflection, generally given in pounds per inch. Remove Set full compression of a spring to solid state by manufacturer when needed to prevent length loss in operation. Residual Stress stresses induced by set removal, shot peening, cold working, forming or other means. These stresses may or may not be beneficial, depending on the application. Set length loss in operation due to the high stress condition of the spring. Shot Peening a cold working process in which the material surface is peened to induce compressive stresses and thereby improve fatigue life. Slenderness Ratio ratio of spring length to mean coil diameter. Solid Height height of a compression spring when under sufficient load to bring all coils into contact with adjacent coils. Spring Index ratio of the mean coil diameter to wire diameter Squared and Ground Ends see Closed and Ground Ends. Squared Ends see Closed Ends. Stress Range the difference in operating stresses at minimum and maximum loads. Stress Relieve to subject springs to low-temperature heat treatment so as to relieve residual stresses. Squareness of Ends angular deviation between the axis of a compression spring and a normal to the plane of the ends. Squareness Under Load same as in Squareness of Ends, except with the spring under load. Torque a twisting action in torsion springs which tends to produce rotation, equal to the load multiplied by the distance (or moment arm) from the load to the axis of the spring body. Usually expressed in inchoz., inch-pounds or in foot-pounds. Total Number of Coils number of active coils plus the coils forming the ends. Trapped Stress see Residual Stress. 4

5 REGULATORY COMPLIANCE AND CERTIFICATIONS ROHS COMPLIANCE RoHS (European Directive 2002/95/EC on Restriction of the Use of Certain Hazardous Substances) is European legislation that restricts the levels of Lead, Mercury, Cadmium, Hexavalent Chromium, Polybrominated Biphenyls (PBB) and Polybrominated Diphenyl Ethers (PBDE) present in electrical and electronic equipment sold in the European Union, commencing July 1, All Lee Spring Stock Products comply with the RoHS Directive. While the vast majority of Lee Spring custom products are also RoHS compliant, please note that certain specifications requested by our customers may not be compliant. Lee Spring only manufactures products that are not in compliance with RoHS upon customer request and can advise customers on RoHS compliance issues if there is any uncertainty. DFARS COMPLIANCE DFARS , Alt.1 prohibits prime government contractors and all suppliers at every tier from incorporating specialty metals (as defined in the clause) into military parts, components and/or end item deliverables unless the specialty metals have been: melted in the United States its outlying areas, or a qualifying country listed in DFARS Articles manufactured in a qualifying country, regardless of where the specialty metal may have been melted, are not subject to the requirement. Based on the definition of specialty metals, as given in DFARS , Music Wire and Oil Tempered MB spring wire are excluded from this requirement. However, Stainless Steel 302, Stainless Steel 316 and Oil Tempered Chrome Silicon are considered specialty metals (are not excluded) and therefore may be restricted for use under DFARS Not all of the wire used by Lee Spring in the manufacture of our products is melted in the Untied States or in any of the other qualifying countries. Should the products you need fall under the DFARS requirement, you will need to contact Lee Spring Customer Service or Engineering so that your requirement can be processed as a custom transaction. This may involve an increase in price, lead time, or both, on a case by case basis, depending on the availability of a suitable supply of the restricted alloy required. MS (MATERIAL TRACEABILITY) All Stock Spring products are available with Material Traceability certification; these products should be designated with the suffix MS. There is a documentation surcharge included in the price. Please contact Lee Spring for pricing. All Custom Spring products are available with Material Traceability certification. Please be sure to specify your requirement for these documents when placing a custom order. MIL-SPEC SPRINGS Lee Spring can supply product in compliance with Military Specifications for both Compression Springs (MS 24585) and Extension Springs (MS 24586). Please contact Lee Spring for ordering information and pricing. 5

For critical applications... we ve got your spring. Introducing Type 316 Stainless Steel Stock Springs from Lee Spring. Today s manufacturing processes have ever-changing requirements.

6 For critical applications... we ve got your spring. Introducing Type 316 Stainless Steel Stock Springs from Lee Spring. Today s manufacturing processes have ever-changing requirements. Industries such as Medical Products, Pharmaceuticals, Food Processing, Aerospace, and others demand the features of Type 316 Stainless Steel springs: Improved Corrosion Resistance Ultrasonically Cleaned for Medical & Food Industries Higher Levels of Product Purity Enhanced Visual Integrity Lee Spring offers one of the largest lines of Stock Springs in a variety of materials, along with the highest level of customer service and free ground shipping! To find out more call SPRINGS or visit today. ISO 9001: 2000 CERTIFIED Not just a better spring a better spring company! 6

EXTENSION SPRINGS. Ends Full twist loop. Special ends on request.

EXTENSION SPRINGS. Ends Full twist loop. Special ends on request. EXTENSION SPINGS EXTENSION SPINGS Stock sizes in music wire and stainless steel Associated Spring aymond SPEC extension springs have a wide application for experimental, development, prototype and maintenance