1、Designation: F 436 07Standard Specification forHardened Steel Washers1This standard is issued under the fixed designation F 436; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses ind
2、icates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers the chemical, mechanical, anddimensional requirements for hardened steel washers for usewith fasteners having nominal thread diamete
3、rs of14 through4 in. These washers are intended for general-purpose mechani-cal and structural use with bolts, nuts, studs, and otherinternally and externally threaded fasteners. These washers aresuitable for use with fasteners covered in Specifications A 325,A 354, A 449, and A 490.1.2 The washers
4、are designated by type denoting the mate-rial and by style denoting the shape.1.2.1 The types of washers covered are:1.2.1.1 Type 1Carbon steel.1.2.1.2 Type 3Weathering steel. Atmospheric corrosionresistance and weathering characteristics are comparable tothat of steels covered in Specifications A 5
5、88/A 588M andA 709/A 709M. The atmospheric corrosion resistance of thesesteels is substantially better than that of carbon steel with orwithout copper addition. See 5.1. When properly exposed tothe atmosphere, these steels can be used bare (uncoated) formany applications.1.2.2 The styles of washers
6、covered are:1.2.2.1 CircularCircular washers in nominal bolt sizes14through 4 in. suitable for applications where sufficient spaceexists and angularity permits.1.2.2.2 BeveledBeveled washers are square or rectangu-lar, in nominal sizes12 through 112 in., with a beveled 1 to 6ratio surface for use wi
7、th American standard beams andchannels.1.2.2.3 ClippedClipped washers are circular or beveledfor use where space limitations necessitate that one side beclipped.NOTE 1Acomplete metric companion to Specification F 436 has beendevelopedSpecification F 436M; therefore no metric equivalents arepresented
8、 in this specification.1.2.2.4 Extra ThickExtra thick washers are circular wash-ers in nominal sizes12 through 112 in., with a nominalthickness of516 in. suitable for structural applications withoversized holes.1.3 Terms used in this specification are defined in Termi-nology F 1789 unless otherwise
9、defined herein.2. Referenced Documents2.1 ASTM Standards:2A 325 Specification for Structural Bolts, Steel, HeatTreated, 120/105 ksi Minimum Tensile StrengthA 354 Specification for Quenched and Tempered AlloySteel Bolts, Studs, and Other Externally Threaded Fasten-ersA 449 Specification for Hex Cap S
10、crews, Bolts and Studs,Steel, Heat Treated, 120/105/90 ksi Minimum TensileStrength, General UseA 490 Specification for Structural Bolts, Alloy Steel, HeatTreated, 150 ksi Minimum Tensile StrengthA 588/A 588M Specification for High-Strength Low-AlloyStructural Steel, up to 50 ksi 345 MPa Minimum Yiel
11、dPoint, with Atmospheric Corrosion ResistanceA 709/A 709M Specification for Structural Steel forBridgesA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsB 695 Specification for Coatings of Zinc MechanicallyDeposited on Iron and SteelD 3951 Practice for Commercial P
12、ackagingF 606 Test Methods for Determining the Mechanical Prop-erties of Externally and Internally Threaded Fasteners,Washers, Direct Tension Indicators, and RivetsF 1789 Terminology for F16 Mechanical FastenersF 2329 Specification for Zinc Coating, Hot-Dip, Require-ments for Application to Carbon a
13、nd Alloy Steel Bolts,Screws, Washers, Nuts, and Special Threaded Fasteners1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts, Rivets and Washers.Current edition approved Aug. 1, 2007. Published A
14、ugust 2007. Originallyapproved in 1976. Last previous edition approved in 2004 as F 436 04.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Su
15、mmary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.G 101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. Orde
16、ring Information3.1 Orders for hardened steel washers under this specifica-tion shall include the following:3.1.1 ASTM designation and year of issue,3.1.2 Quantity (number of pieces by size),3.1.3 Type and Style (see 1.2.1 and 1.2.2),3.1.4 Zinc CoatingSpecify the zinc coating process re-quired, for
17、example, hot-dip, mechanically deposited, or nopreference (see 4.3),3.1.5 Dimensions, nominal size, and other dimensions, ifmodified from those covered in this specification,3.1.6 Specify if inspection at point of manufacture is re-quired,3.1.7 Specify if manufacturers certification or test reports,
18、or both, are required, and3.1.8 Special requirements.4. Materials and Manufacture4.1 Steel used in the manufacture of washers shall beproduced by the open-hearth, basic-oxygen, or electric-furnaceprocess.4.2 Washers up to and including 112 in. in bolt size shall bethrough hardened. Washers over 112
19、in. may be either throughhardened or carburized at the option of the manufacturer.4.3 Zinc Coatings, Hot-Dip and Mechanically Deposited:4.3.1 When zinc-coated washers are required, the purchasershall specify the zinc coating process, for example, hot-dip,mechanically deposited, or no preference.4.3.
20、2 When hot-dip is specified the washers shall be zinccoated by the hot-dip process in accordance with the require-ments of Specification F 2329.4.3.3 When mechanically deposited is specified the washersshall be zinc coated by the mechanical-deposition process inaccordance with the requirements of Cl
21、ass 50 of SpecificationB 695.4.3.4 When no preference is specified, the supplier mayfurnish either a hot-dip zinc coating in accordance withSpecification F 2329, or a mechanically deposited zinc coatingin accordance with Specification B 695, Class 50. Threadedcomponents (bolt and nuts) shall be coat
22、ed by the samezinc-coating process and the suppliers option is limited to oneprocess per item with no mixed processes in a lot.4.4 If washers are heat treated by a subcontractor, they shallbe returned to the manufacturer for testing prior to shipment tothe purchaser.5. Chemical Composition5.1 Type 1
23、 and Type 3 washers shall conform to thechemical composition specified in Table 1. For Type 3 seeGuide G 101 for methods of estimating corrosion resistance oflow alloy steels.5.2 Product analysis may be made by the purchaser fromfinished material representing each lot of washers. The chemi-cal compo
24、sition shall conform to the requirements of 4.1 and5.1.5.3 Individual heats of steel are not identified in the finishedproduct.5.4 Chemical analyses shall be performed in accordancewith Test Methods, Practices, and Terminology A 751.6. Mechanical Properties6.1 Through hardened washers shall have a h
25、ardness of 38to 45 HRC, except when zinc-coated by the hot-dip process, inwhich case they shall have a hardness of 26 to 45 HRC.6.2 Carburized washers shall be carburized to a minimumdepth of 0.015 in. and shall have a surface hardness of 69 to 73HRA or 79 to 83 HR15N, except when zinc-coated by the
26、hot-dip process, in which case they shall have a hardness of 63to 73 HRA or 73 to 83 HR15N.6.3 Carburized and hardened washers shall have a minimumcore hardness of 30 HRC or 65 HRA.7. Dimensions and Tolerances7.1 All circular and clipped circular washers shall conformto the dimensions shown in Table
27、 2 and Table 3.7.2 All square beveled and clipped square beveled washersshall conform to the dimensions shown in Table 3 and Table 4.In addition, rectangular beveled and clipped rectangular bev-eled washers shall conform to the dimensions shown in Table3 and Table 4, except that one side may be long
28、er than shownfor the “A” dimension.7.3 Unless otherwise stated in the inquiry or purchase order,plain (uncoated) hardened steel circular washers shall befurnished. Where corrosion-preventive treatment is required,washers shall be coated as agreed upon between the manufac-turer and the purchaser.8. W
29、orkmanship, Finish, and Appearance8.1 Washers shall be free of excess mill scale, excesscoatings and foreign material on bearing surfaces. Arc and gascut washers shall be free of metal spatter.TABLE 1 Chemical RequirementsElementComposition, %Type 1 Type 3APhosphorus, maxHeat analysisProduct analysi
30、s0.0400.0500.0400.045Sulfur, maxHeat analysisProduct analysis0.0500.0600.0500.055SiliconHeat analysisProduct analysis.0.150.350.130.37ChromiumHeat analysisProduct analysis.0.450.650.420.68NickelHeat analysisProduct analysis.0.250.450.220.48CopperHeat analysisProduct analysis.0.250.450.220.48AWeather
31、ing steel washers may also be manufactured from any of the steelslisted in Table 2 of Specification A 325.F436072TABLE 2 Hardened Circular, Clipped Circular, and Extra-Thick WashersNOTE 1Tolerances are as noted in table on washer dimension tolerances.Circular and Extra Thick Clipped CircularNominal
32、SizeCircular, Clipped Circular, and Extra Thick Circular and Clipped Extra Thick ClippedNominal OutsideDiameter (OD), in.Nominal InsideDiameter (ID), in.Thickness (T),in.Minimum EdgeDistance (E)A,in.min max min max14 0.625 0.281 0.051 0.080 . . . . . . 0.219516 0.688 0.344 0.051 0.080 . . . . . . 0.
33、28138 0.813 0.406 0.051 0.080 . . . . . . 0.344716 0.922 0.469 0.051 0.080 . . . . . . 0.40612 1.063 0.531 0.097 0.177 0.305 0.375 0.438916 1.188 0.625 0.110 0.177 0.305 0.375 0.50058 1.313 0.688 0.122 0.177 0.305 0.375 0.56334 1.468 0.813 0.122 0.177 0.305 0.375 0.65678 1.750 0.938 0.136 0.177 0.30
34、5 0.375 0.7811 2.000 1.063 0.136 0.177 0.305 0.375 0.875118 2.250 1.188 0.136 0.177 0.305 0.375 1.000114 2.500 1.375 0.136 0.177 0.305 0.375 1.094138 2.750 1.500 0.136 0.177 0.305 0.375 1.219112 3.000 1.625 0.136 0.177 0.305 0.375 1.313134 3.375 1.875 0.178B0.28B0.305 0.375 1.5312 3.750 2.125 0.178B
35、0.28B0.305 0.375 1.750214 4.000 2.375 0.24C0.34C0.305 0.375 2.000212 4.500 2.625 0.24C0.34C0.313 0.375 2.188234 5.000 2.875 0.24C0.34C0.313 0.375 2.4063 5.500 3.125 0.24C0.34C0.313 0.375 2.625314 6.000 3.375 0.24C0.34C0.313 0.375 2.875312 6.500 3.625 0.24C0.34C0.313 0.375 3.063334 7.000 3.875 0.24C0
36、.34C0.313 0.375 3.3134 7.500 4.125 0.24C0.34C0.313 0.375 3.500AClipped edge E shall be not closer than78 of the bolt diameter from the center of the washer.B 316 in. nominal.C 14 in. nominal.F4360739. Sampling and Number of Tests9.1 The requirements of this specification shall be met incontinuous ma
37、ss production for stock, and the manufacturershall make sample inspections to ensure that the productconforms to the specified requirements. Additional tests ofindividual shipments of material are not ordinarily contem-plated.9.2 When additional tests are specified in the inquiry orpurchase order, a
38、 lot, for purposes of selecting test samples,shall consist of all material offered for inspection at one timethat has the following common characteristics:9.2.1 Same nominal size.9.2.2 Same material grade.9.2.3 Same nominal post treatment (heat treatment or coat-ing or both).9.3 From each lot descri
39、bed in 9.2, the number of specimenstested for each required property shall be as follows:Number of Pieces in Lot Number of Specimens800 and under 1801 to 8000 2Number of Pieces in Lot Number of Specimens8001 to 22 000 3Over 22 000 510. Test Methods10.1 Hardness:10.1.1 Non-carburized WashersA minimum
40、 of two read-ings shall be taken 180 apart on at least one face at a minimumdepth of 0.015 in.10.1.2 Carburized WashersA minimum of two readingsshall be taken 180 apart on at least one face.10.2 Hardness tests shall be performed in accordance withthe Rockwell test method specified in Test Methods F
41、606.11. Inspection11.1 The manufacturer shall afford the purchasers inspectorall reasonable facilities necessary to satisfy him that thematerial is being produced and furnished in accordance withthis specification. Mill inspection by the purchaser shall notinterfere unnecessarily with the manufactur
42、ers operations. AllTABLE 3 Washer Dimensional TolerancesDimensional Characteristics112 through 3in. NominalSize3 in.Nominal SizeNominal diameter of hole, in. 0, +0.032 0, +0.063 0, +0.063 0, +0.125Nominal outside diameter, in. 60.032 60.063 60.063 60.125Flatness: max deviation from straightedgeplace
43、d on cut side shall not exceed (in.)0.010 0.015 0.020 0.032Concentricity, in.: center of hole to outsidediameter0.030 FIRA0.060 FIRA0.090 FIRA0.250 FIRABurr shall not project above immediatelyadjacent washer surface more than (in.)0.010 0.015 0.020 0.025AFull indicator runout.TABLE 4 Hardened Bevele
44、d WashersNOTE 1Tolerances are as noted in Table 3.Square Square ClippedBolt Size, in.Square Beveled and Clipped Square BeveledAClippedMinimum SideDimension (A),in.Nominal InsideDiameter (I.D.), in.Mean Thickness(T),in.Slope or Taper inThicknessNominal EdgeDistance (E),Bin.12 1341732516 1:671658 1341
45、116516 1:691634 1341316516 1:6213278 1341516516 1:625321134 118516 1:678118 214 114516 1:6 1114 214 138516 1:6 1332138 214 112516 1:6 1732112 214 158516 1:6 1516ARectangular beveled washers shall conform to the dimensions shown above, except that one side may be longer than that shown for the A dime
46、nsion.BClipped edge E shall not be closer than78 of the bolt diameter from the center of the washer.F436074tests and inspections shall be made at the place of manufacture,unless otherwise agreed to.11.2 If other than the normal inspection for continuous massproduction of parts as stipulated in 9.1 i
47、s required by thepurchaser, it shall be specified in the inquiry and contract order.12. Rejection and Rehearing12.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdiss
48、atisfaction with the results of the test, the producer orsupplier may make claim for a rehearing.13. Certification and Test Report13.1 Upon request of the purchaser in the contract or order,a manufacturers certification that the material was manufac-tured and tested in accordance with this specifica
49、tion, togetherwith a report of the latest mechanical tests of each stock size ineach shipment, shall be furnished at the time of shipment.13.2 Data contained in the certified test report shall includematerial grade and hardness tests.14. Responsibility14.1 The party responsible for the fastener shall be theorganization that supplies the fastener to the purchaser.15. Product Marking15.1 Washers shall be marked with a symbol, or otherdistinguishing marks, to identify the
