SLOTTED SPRING PINS
SLOTTED SPRING PINSISO 8752ASME B18.8.2ASME B18.8.4M1
SLOTTED SPRING PINSSPIROL Slotted spring pins manufactured toISO 8752 (EN 28752), ASME 18.8.4M Type B (Metric),and ASME B18.8.2 (Inch) are available from stock. DIN 1481 is interchangeable with ISO 8752 (EN 28752) except fora variation in length tolerance. The ASME 18.8.2 range meets the requirement of NASM10971 (formerly MIL-P-1091), NASM 16562 (formerly 16562),NAS 561, SAE J496, and SAE AS7207 (Superseded AMS 7207and MS 17140-17190). ISO 13337 (DIN 7346), lightweight Slotted Pins, are available made-toorder for volume applications.ISO 9002 and QS-9000 Certificationsare your guarantee for consistent quality. Contract Review / Quality Planning. A formal procedure All parts are traceable through each manufacturing processexists for the specification and acceptance of new orders bysales, manufacturing and quality.and heat treatment back to the original raw material testcertificate. Each lot has a unique identification number on thepackaging which should be retained by the customer andquoted in the event of any inquiry. Document / Drawing Control. All drawings, standards andspecifications are controlled through engineering. SQA Approval of Suppliers and Subcontractors is Manufacturing Controls. There is clear identification of jobauditors with written reports submitted for management action.and quality status with controlled routings. Capability studiesare used to verify machine and process capability; statisticalprocess control is used for all processes, using variable andattribute data; and there are final audit checks of completedparts and stock. Calibration and Gauge Control. All gauges are calibrated Non-Conforming Parts. These are segregated with a "hold"maintained by supplier system audits and monitoring ofsupplier quality performance. System Audits are carried out regularly by independenton a regular basis, traceable back to national standards. Thecontrol records are computerized.PART DESCRIPTIONMATERIALSSLTP 4 X 10 BK ISO 8752StandardFinishMaterialLengthDiameterPin Type (Slotted)label and quarantined pending a decision on disposal. Anautomated corrective action system ensures managementcontrol for quick and accurate responses to customer inquiries.Carbon steel: AISI 1070 - 1080Equivalents:DIN 177222 WkNr 1.1248 CK75 & WkNr 1.1231 CK67BS 1449 67CS & 70CSMartensitic Stainless Steel: AISI 420Equivalents:DIN 17441 WkNr 1.4021BS 1449-2 420S45Austenitic Stainless Steels: AISI 302/304Equivalents:EN 10088 / DIN 17224 WkNr 1.4300 & WkNr 1.4301BS 1449-2 304S31Beryllium Copper: UNS C17200Equivalents:DIN 17666 WkNr 2.1248ISO CuBe2Pb2
THE CHOICE – ASME OR ISOSPIROL produces Slotted Pins to both the American National Standard, ASME B18.8.4M and the InternationalStandard, ISO 8752 (EN 28752). It is our recommendation that you consider ASME pins for all new applications andfor your current applications if you are experiencing insertion problems or performance failures. Our recommendationis based on these important advantages of ASME pins: LOWER INSERTION FORCE as a result of the smaller free diameter of the pin in relation to the nominal hole. The pin issecurely retained in the hole based on increased wall thickness, higher minimum hardness, and the minimal slot afterinsertion. NO INTERLOCKING because the maximum gap in the free diameter state is always less than the wall thickness of the pin. HIGHER SHEAR STRENGTH based on increased wall thickness, a higher minimum hardness, and narrower slots whichclose under load to ensure that the pins fail instantaneously rather than progressively in shear.SHEAR STRENGTH COMPARISONNom. Dia.1.522.534568101214161820ISO 4.7190.0250.0320.0ASME 22.5280.6Increase % 11.4 12.4 12.6 12.4 9.4 11.2 9.4 11.4 12.6 7.2 17.5 11.1 12.4 11.4* SPIROL standard.COMPARISON OF RECOMMENDED HOLESASME recommends tolerance classH10 for holes up to 2.5 mm and H12for diameters 3 mm and larger. ISOrecommends H12 for all diameters.Nom. Dia.1.522.53 and upISO1.5 / 1.62 / 2.12.5 / 2.65No differenceASME1.5 / 1.562 / 2.072.5 / 2.58No differenceASME pins 3 mm and larger can besubstituted for ISO pins without anyreview or change. 1.5 to 2.5 mmpins require a change in themaximum specified hole.COMPARISON OF TECHNICAL SPECIFICATIONSEXPANDED DIAMETER – ASME pins have a smallerexpanded or free diameter relative to the nominal hole.CHAMFER SPECIFICATION – ASME specifies a maximumchamfer diameter from 0.1 to 0.5 mm smaller than the nominalhole diameter whereas ISO only specifies a chamfer diameterless than the nominal hole diameter. ASME specifies aminimum and maximum chamfer length whereas the chamferlength in ISO is only a reference dimension.STRAIGHTNESS – ASME specifies a straightness requirement.ISO does not address it at all.SHEAR STRENGTH – ASME specifies a minimum doubleshear strength for austenitic stainless steel. ISO does not.MATERIAL – ASME includes Beryllium Copper. ISO does not.LENGTH TOLERANCE – The differences are minimal:Pin Length4 - 10 mm12 - 24 mm26 - 50 mm55 -75 mm80 - 100 mm ASME0.25 mm0.50 mm0.50 mm0.75 mm0.75 mm ISO0.40 mm0.40 mm0.50 mm0.60 mm0.75 mmWALL THICKNESS – ASME pins have a wall thickness equalto or greater than ISO pins and a greater cross sectional areabased on both thickness and strip width.HARDNESS – The ASME specification for carbon steel ishigher (HV 458-560 vs HV 420-520) to maximize the tensilestrength and for chrome stainless it is slightly lower (HV 423544 vs HV 440-560) to avoid the risk of brittleness.3
PIN MATERIALS AND HARDNESSISO 8752EN 28752B Carbon SteelC Chrome Stainless SteelD Nickel Stainless SteelLENGTHCPIN FINISHESHV 420-520HV 440-560Work HardenedK Plain*P PassivatedT Zinc Plated* Plain carbon steel pins have a protective oil finish.DBSD145 CHAMFER BOTH ENDS,CONTOUR OF CHAMFER OPTIONALD345 D2B IS LESS THAN NOMINAL PIN DIAMETERSPECIFICATIONS in mmNominalPinDiameterPin 1Chamfer Length Wall 2.814.816.818.920.9Minimum diameter is the average of D1, D2, and .81.01.01.21.52.02.53.03.03.54.02RecommendedHole 16.018.020.0Maximum measured with go-ring gauge.Double Shear StrengthCarbon & Chrome .1512.1814.1816.1818.1820.213Minimum 16104.1144.7 3171.0 3222.5 3280.6 3Carbon Steel only.STANDARD LENGTHS AND WEIGHTS (Kg PER 1,000 minal Pin LengthLength ToleranceLength Tolerance — ISO 87524 to 10 mm12 to 50 mm55 to 100 mm 0.25 mm 0.50 mm 0.75 mmLength Tolerance — DIN 1481 (Ref.)4 to 10 mm12 to 50 mm55 to 100 mm 0.5 mm 1.0 mm 1.5 mm* Not generally a stocked 62.466.370.274.177.9
PIN MATERIALS AND HARDNESSASME 18.8.4MTYPE BBCDILENGTHCarbon SteelChrome Stainless SteelNickel Stainless SteelBeryllium CopperPIN FINISHESHV 458-560HV 423-544Work HardenedHV 354-412KPTRPlain*PassivatedZinc PlatedPhosphated, OiledC* Plain carbon steel pins have a protective oil finish.DBSD145 CHAMFER BOTH ENDS,CONTOUR OF CHAMFER OPTIONALD345 D2SPECIFICATIONS in mmPin .2210.2512.2814.3016.3218.3520.40Chamfer .20.20.20.30.30.40.40.50.60.81.01.21.4Minimum diameter is the average of D1, D2, and D3.2WallRecommendedHole 4.016.018.020.0Maximum measured with go-ring 1814.1816.1818.1820.213Double Shear StrengthCarbon & Nickel BerylliumChrome S.S. S.S.CopperMinimum 8.828.479.146.1111.6 360.7170.0 4—190.0 4—250.0 4—320.0 4—SPIROL �——Carbon Steel only.STANDARD METRIC SIZES AND WEIGHTS (Kg PER 1,000 670.3970.4270.4580.4890.5340.610Nominal Pin LengthUp to 24 mm, incl.Over 24 to 50 mmOver 50 to 75 mmOver 75 1.021.091.191.361.531.70Length Tolerance 0.40 mm 0.50 mm 0.60 mm 0.75 mm† In conformance with but not part of ASME 18.18.4M.* Not generally a stocked 68.772.776.880.85
PIN MATERIALS AND HARDNESSASME 18.8.2BCDILENGTHCarbon SteelChrome Stainless SteelNickel Stainless SteelBeryllium CopperPIN FINISHESHV 458-560HV 423-544Work HardenedHV 354-412KPTRPlain*PassivatedZinc PlatedPhosphated, OiledCD* Plain carbon steel pins have a protective oil finish.BSD145 CHAMFER BOTH ENDS,CONTOUR OF CHAMFER OPTIONAL45 D3D2SPECIFICATIONS in inchesPin /321/45/163/87/161/25/8 33/4 .625.750ChamferDiameterDMin. 640.768ChamferLengthBMax. 12.014.016.017.025.030.045Minimum diameter is average of D1, D2 and 5.110.125.1502RecommendedWallHole .160.192.224.256.318.382.445.510.637.764Double Shear StrengthCarbon &BerylliumNickel S.S.Chrome S.S.CopperMinimum Lbs. and 257.672750 12.234150 18.462425 10.792600 11.573400 15.123650 16.245850 26.027050 31.364100 18.244400 19.576750 30.0310800 48.046300 28.029500 42.25 10200 45.3716300 72.5019800 88.08 11500 51.16 12300 54.7227100 120.55 15800 70.28 17000 75.62———42500 189.06—————62500 278.02Maximum diameter measured with go-ring gauge.3SPIROL standard, Carbon Steel only.STANDARD SIZES AND WEIGHTS (Kg PER 1,000 .447.499.549.600NominalPin LengthUp to 1”, incl.Over 1” to 2”, incl.Over 2” to 3”, incl.Over 3” to 4”, incl.Over 4”* SPIROL 921.4211.5511.6821.8121.9412.071LengthTolerance 0.015 0.020 0.025 0.030 .743.003.283.543.814.084.344.875.41Nominal .9329.0332.6636.7440.3744.0045.3649.9054.4358.97
TECHNICAL INFORMATIONSHEAR STRENGTHRECOMMENDED PIN/SHAFT RATIOThe shear test procedure is set forth in ISO 8752, SAE J496,and NASM 10971, which are identical in substance.The recommended maximum ratio is 1 to 3; that is the pindiameter should never exceed 33.3% of the shaft diameter. Ifthis limit is exceeded, the remaining material in the shaft isinadequate and the shaft will fail before the pin.LoadShear blockHardenedbushingsLoadHardened shearblockIn situations requiring exceptionally high shear strength, it ispossible to use pins in combination by driving an inner pin intoan already inserted outer pin. The gaps should be 180 opposed. The recommended hole needs to be increased. It issuggested you consult Spirol Application Specialists in thesesituations.PinHardened supportblockFixtureSpacerTypical pin shear test fixtureSpacer and guidesfor shear blockShear values specified will only be obtained under theconditions noted in the referenced standards. Of special note: DOUBLE PINNINGThe clearance at the shear plane cannot exceed 0.15 mmor .005”.The hole has to be the nominal pin diameter (tolerance H6)with a hardness of not less than HV 700.The pin must be installed with the slot up.The shear planes have to be at least one pin diameter fromeach end, and at least two diameters apart.STRAIGHTNESS SPECIFICATION(ASME PINS ONLY)The straightness over the length of the pins shall be such thatthe pin will pass freely through a ring gauge of the length anddiameter as specified below.STRAIGHTNESS GAUGE SPECIFICATIONSPin LengthGauge LengthMax. Pin Dia. PlusUp to 24 mmUp to 1”24 mm – 50 mm1” – 2”Over 50 mmOver 2”25 0.151” .005"50 0.152” .005"75 0.153” .005"0.20 – 0.22.007"0.40 – 0.43.010"0.60 - 0.64.013"WHICH STAINLESS?Martensitic chrome stainless is hardened and has strengthcomparable to carbon steel and satisfactory corrosionresistance in most cases. Austenitic nickel stainless steel hasbetter corrosion resistance in some environments but since it isnot hardened, it has lower strength and requires more care inthe insertion process.HOLE PREPARATIONHoles can be drilled, punched or cast with no need foradditional reaming or sizing. Care should be taken to avoidundersize holes to eliminate potential pin damage duringinsertion. The following points are suggested for yourconsideration: Break or debur the edges, particularly in case of hardenedholes. Countersinking is not recommended if it increases theclearance at the shear plane. In case of cast or sintered metal holes, provide a lead-inradius. Whenever possible, punched holes should be punched inthe same direction as the direction of pin insertion. Eliminate hole misalignment problems by drilling holestogether. In case of hardened collars or similar components, flattenthe component at the entry of the hole to avoid two-pointcontact as the pin starts into the hole.SPECIALSISO 13337 (DIN 7343) SPECIFICATIONSNom. PinDiameter22.53456810ExpandedDiameterMin. Max.2.3 2.42.8 2.93.3 3.54.4 4.65.4 5.66.4 6.78.5 8.810.5 10.8ChamferLengthMin. Max.0.20 0.400.25 0.450.25 0.450.50 0.700.50 0.700.70 0.900.70 0.900.90 751.00Double Shear StrengthCarbon & Chrome S.S.Min. kM1.502.403.508.0010.4018.0024.0040.00OTHER COMMON SPECIALS: Special Lengths Special Materials Special Tolerances Special Finishes Special Packaging7
I N T E R N AT I O N A LU.S.A.ApplicationsSPIROL slotted spring pinsare used in many industries. Spirol West645 East Harrison Street, Suite 100Corona, California 92879-1347Tel.] 909.273.5900 or 800.776.9528Fax] lasticsRailwaysAerospaceSpirol International Corporation Shim Division321 Remington RoadStow, Ohio 44224Tel.] 330.920.3655 Fax] 330.920.3659www.spirol.comAscutney Metal Products2637 US Route 5 NorthWindsor, Vermont 05089Tel.] 802.674.6721 Fax] 802.674.6121www.ascutneymp.comTypical applications use springpins as. Spirol Distribution30 Rock AvenueDanielson, Connecticut 06239Tel.] 800.321.4679 Fax] 860.774.0487www.spirol.com(For Distributor Customers)Fasteners to secure handlesand gears to shaftsRetaining pinsAxle shaftsStop pinsHinge and pivot applicationsCross barsTube reinforcing pinsLocator pinsCanadaSpirol Industries, Ltd.3103 St. Etienne BoulevardWindsor, OntarioCanada N8W 5B1Tel.] 519.974.3334 Fax] 519.974.6550www.spirolcanada.comMexicoSpirol México, S.A. de C.V.Carretera a Laredo KM 16.5 Interior ECol. Moises SaenzApodaca, N.L. México C.P. 66605Tel.] (81) 8385 4390 Fax] (81) 8385 4391www.spirol.com.mxEuropeSpirol Industries, Ltd.Princewood RoadCorby, NorthantsEngland NN17 4ETTel.] 44 (0) 1536 444800Fax] 44 (0) 1536 203415(For Distributor Customers)Tel.] 44 (0) 8003 890034www.spirol.co.ukFREE APPLICATION ANDINSERTION CONSULTATIONConnecticutQS-9000CanadaQS-9000:1998FM 64050Certificate No. 5981CaliforniaISO9001:2000 Certificate No. 111688Spirol International Corporation30 Rock AvenueDanielson, Connecticut 06239Tel.] 860.774.8571 Fax] 860.774.2048www.spirol.comEnglandISO 9002BS 5750Certificate No. Q 09419Challenge Us! 2004 Spirol International Corporation 15M 04/04 Printed in U.S.A.Spirol SASRue Henri Roi TanguyZ.A. Les Naux51450 Bétheny FranceTel.] 33 (0)3 26 36 31 42Fax] 33 (0)3 26 09 19 76www.spirol.come-mail: information@spirol.com
Carbon steel: AISI 1070 - 1080 Equivalents: DIN 177222 WkNr 1.1248 CK75 & WkNr 1.1231 CK67 BS 1449 67CS & 70CS Martensitic Stainless Steel: AISI 420 Equivalents: DIN 17441 WkNr 1.4021 BS 1449-2 420S45 Austenitic Stainless Steels: AISI 302/304 Equivalents: EN 10088 / DIN 17224 WkNr 1.4300 & WkNr 1.4301 BS 1449-2 304S31
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ASME B18.8.4M Type B is based on SPIROL’s specifications. SPIROL Standard Slotted Pins meet or exceed ASME B18.8.4M Type B. 1 Shear tests performed in accordance with ASME B18.8.4M & ISO 8749 2 The straightness o
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