1、Designation: C1513 12aStandard Specification forSteel Tapping Screws for Cold-Formed Steel FramingConnections1This standard is issued under the fixed designation C1513; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers steel self-drilling and self-piercing tapping screws for the connection of cold-formed steelm
3、embers manufactured in accordance with SpecificationsC645 and C955. This specification also covers test methods fordetermining performance requirements and physical proper-ties.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalco
4、nversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest methods described in this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. I
5、t is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory requirementsprior to use.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA510 Spec
6、ification for General Requirements for Wire Rodsand Coarse Round Wire, Carbon SteelB117 Practice for Operating Salt Spray (Fog) ApparatusC11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC645 Specification for Nonstructural Steel Framing Mem-bersC955 Specification for Load-
7、Bearing (Transverse and Axial)Steel Studs, Runners (Tracks), and Bracing or Bridgingfor Screw Application of Gypsum Panel Products andMetal Plaster BasesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1941 Specification for Electrodeposited Coatin
8、gs onThreaded Fasteners (Unified Inch Screw Threads (UN/UNR)2.2 ANSI/ASME Documents:ANSI/ASME B18.6.4 Standard Specification for ThreadForming and Thread-Cutting Screws3ANSI/ASME B18.18 Quality Assurance for Fasteners332.3 SAE Standards:SAE J78 Steel Self-Drilling Tapping Screws4SAE J933 Mechanical
9、and Quality Requirements for Tap-ping Screws43. Terminology3.1 DefinitionsFor definitions relating to gypsum andrelated building materials and systems, use Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 bearing surface (of the screw), nthe supporting orlocating surface of a
10、 fastener with respect to the part which itfastens (mates). The loading of the fastener is usually throughthe bearing surface, (that is, the bearing surface of the hexwasher head style is under the head, the part that touches thetop material being fastened).3.2.2 case depth (of the screw), nthe thic
11、kness of thehardened surface of the screw.3.2.3 countersunk head style (for a screw), nall screwhead designs that sink into the top material being fastened andthat have the bearing surface (see 3.2.1), at the top of the head(that is, flat and bugle).3.2.4 crest (of the screw thread), nthe highest po
12、int of thescrew thread.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.02 on Specifications and Test Methods for Accessories andRelated Products.Current edition approved Dec. 1
13、, 2012. Published January 2013. Originallyapproved in 2001. Last previous edition approved in 2012 as C151312. DOI:10.1520/C1513-12A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume infor
14、mation, refer to the standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from Society of Automotive Engineers (SAE), 400 Commonwealt
15、hDr., Warrendale, PA 15096-0001, http:/www.sae.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.5 drill capacity (of the self-drilling screw), nthe totalthickness
16、 of material the fastener is designed to drill through,including any space between the layers.3.2.6 head styles (of the screw), nrefer to Fig. 1 drawings.3.2.6.1 bugle head, nbugle shape countersinking headtypically used for fastening gypsum panel products to woodand steel.3.2.6.2 hex washer head, n
17、has an indented top surface andsix flat sides formed integrally with a flat washer whichprojects beyond the sides and provides a flat bearing surface.3.2.6.3 lath head, nsee modified truss.3.2.6.4 modified truss, nlow profile round washer head.3.2.6.5 pan framing head, nflat top surface rounding int
18、ocylindrical sides and a flat bearing surface.3.2.6.6 pan head, na slightly rounded top surface round-ing into cylindrical sides and a flat bearing surface.3.2.6.7 pancake head, nlower profile head style than thehex washer and pan head with a larger flat bearing surface.3.2.6.8 wafer head, na counte
19、rsinking head style with alarge lip at the top of the countersinking contour that will“flush” with the substrate creating a greater bearing surface,therefore a greater pull-over/pull-through value.3.2.7 point style, nof the self-drilling tapping screw isdesignated by a number (that is, 1, 2, 3, 4, o
20、r 5). The higher thenumber, the higher the drill capacity (see 3.2.5) of the screw.3.2.8 root (of the screw thread), nthe lowest point of thescrew thread.3.2.9 self-drilling tapping screw, nexternally threaded fas-teners with the ability to drill their own hole and form or cuttheir own internal mati
21、ng threads without breaking.3.2.10 self-piercing tapping screw, nexternally threadedfasteners with the ability to pierce metallic material 33 mils(0.84 mm), or less, form a sleeve by extruding metallicmaterial and “tap” their own mating threads when driven.Self-piercing screws have a sharp point wit
22、h the point angle notmore than 30 degrees.3.2.11 spin-out (for a screw), nfor a screw, the continuedrotation of a screw without further penetration into the sub-strate.3.2.12 tapping screw, nexternally threaded fasteners withthe ability to “tap” their own internal mating threads wheninstalled.4. Cla
23、ssification4.1 Steel tapping screws covered by this specification aretwo types:4.1.1 Self-drilling.4.1.2 Self-piercing.5. Materials5.1 Steel wire, Specification A510minimum grade 1018.6. Physical Properties6.1 Dimensions:6.1.1 Self-drilling tapping screws shall be in accordancewith SAE J78.6.1.2 Sel
24、f-piercing tapping screws shall be in accordancewith head dimensions as shown in ANSI/ASME B18.6.4.6.2 Total Case DepthScrews shall have a total case depthconforming to the tabulation in Table 1.6.2.1 Case depth shall be measured at the mid-point be-tween crest and root on the thread shank.7. Packag
25、ing and Head Marking7.1 Screws shall be marked with manufacturers/suppliershead marking for traceability.7.2 Screws shall be packaged in substantial commercialshipping containers, constructed so as to preserve the contentsin good condition and to ensure acceptance and safe deliveryby common or other
26、 carriers.7.2.1 Individual packages shall be so constructed that thecontents shall be able to be partially removed without destroy-ing the containers ability to serve as a receptacle for theremainder of the contents.7.2.2 Individual packages and shipping containers shall bemarked with the type, size
27、, use, and quantity of the screwscontained therein, the name brand headmarking example andtrademark of the producer or supplier, the ASTM designation,and any or all appropriate evaluation reports . Boxes shall bemarked with the drill capacity of the self-drilling tappingscrews.8. Performance Require
28、ments8.1 Hardness:8.1.1 The self-drilling tapping screws shall have a surfacehardness of not less than Rockwell C50 and core hardness ofnot less than Rockwell C32 as tested in accordance with SAEJ78.8.1.2 The self-piercing screws shall have a surface hardnessof not less than Rockwell C45 and core ha
29、rdness of not lessthan Rockwell C28 as tested in accordance with SAE J933.8.2 Ductility:8.2.1 The self-drilling tapping screws shall have sufficientductility to be able to withstand a 5 bend without visible signsof fracture as tested in accordance with SAE J78.FIG. 1 Head StylesTABLE 1 Total Case De
30、pthNominal ScrewSizeTotal Case Depth,Maximum, in. (mm)Total Case Depth,Minimum, in. (mm)8 through 12 0.009 (.2286 mm) 0.004 (.1016 mm)14 in. 0.011 (.2794 mm) 0.005 (.1270 mm)C1513 12a28.2.2 The self-piercing tapping screws shall have sufficientductility to be able to withstand a 10 bend without visi
31、blesigns of fracture as tested in accordance with ANSI/ASMEB18.6.4.8.3 Torsional Strength:8.3.1 Self-drilling tapping screws shall not fail the applica-tion of torque less than or equal to the torsional strengthspecified in Table 2, when tested in accordance with SAE J78.8.3.2 Self-piercing tapping
32、screws shall not fail with theapplication of torque less than the torsional strength specifiedin Table 3, as tested in accordance with ANSI/ASME B18.6.4,Section 2.9.1.2, for tapping screws.8.4 Drill Drive Performance Requirement:8.4.1 Self-drilling tapping screws shall not fail the drill-drive test
33、requirements as noted in SAE J78 and shown inTable 4.8.4.2 Self-drilling tapping screws shall be tested in accor-dance with SAE J78 as shown in Fig. 2.8.5 Self-Drilling Tapping Screw Drill Capacity:8.5.1 Screws shall be able to self-drill and thread intocold-formed steel thicknesses without breaking
34、 or stripping asspecified by each specific manufacturers published recom-mendations. Manufacturers shall provide a min-max recom-mendation with the drill capacity of each self-drilling pointstyle screw.9. Finish and Appearance9.1 The threads shall be clean, smooth, and neatly formed.9.2 Each fastene
35、r shall have manufacturers/suppliers headmarking for traceability.9.3 Screws shall have a corrosion-resistant treatment. Thefinish shall not inhibit adhesion to finishing materials nor bleedthrough field-applied decoration. The screws shall meet aminimum requirement as listed in Specification F1941
36、as testedin accordance with Practice B117.10. Sampling10.1 . Sampling for all tests, except those in Section 13,shall be in accordance with Practice F1470.11. Test Methods11.1 Screws shall be tested per SAE J78 Table number 4,Section 8.4, to determine the ability of the screws to self-drillthrough c
37、old-formed steel without spinout, thread deformation,or breaking.11.2 Significance and Use:11.2.1 The test methods provide procedures for evaluatingthe physical properties and performance requirements of steeldrill screws.12. Test Materials12.1 Materials:12.1.1 Screw fasteners used in the tests shal
38、l be of standardmanufacturer and representative of the product for whichrecognition is sought. Where tested fasteners are prototype, theTABLE 2 Torsional StrengthSelf-Drilling Tapping ScrewsNominal ScrewSizeMinimum lb-in.Type BSDAMinimum lb-in.Type CSDB624 24842 810 61 6512 92 10014 in. 150 156AType
39、 BSDspaced threads referred to as coarse thread.BType CSDmachine screw threads referred to as fine thread.TABLE 3 Torsional StrengthSelf-Piercing Tapping ScrewsNominal Screw Size Minimum lb-in.62473083910 56TABLE 4 Drill-Drive Test RequirementsNominalScrewSizeTestPlateThickness,Ain.,MaxTestPlateThic
40、kness,Ain., MinAxialLoading,Blb, A, maxAxialLoading,Blb,B,MaxAxialLoading,Blb,C,MaxTime toDrilland FormThread,Cs, Max4 0.068 0.062 25 30 40 2.06 0.068 0.062 30 35 45 2.58 0.068 0.062 30 35 45 3.010 0.068 0.062 35 40 50 3.512 0.068 0.062 45 50 60 4.014 0.068 0.062 45 50 60 5.0ATest plates shall be lo
41、w carbon, cold rolled steel having a hardness of RockwellB60-85.BAxial loads are varied to offset the detrimental effects on drilling capabilitycreated by finishes applied to screws in accordance with the following:Column AAxial loads tabulated shall apply to plain, oiled, and commercialphosphate co
42、ating and cadmium and zinc platings up to 0.0003 in. in thickness.Column BAxial loads tabulated shall apply to special electroplated finishesexceeding 0.0003 in. in thickness and to special coatings, such as thread sealinghot melts, and so forth.Column CAxial loads tabulated shall apply to chromium
43、finish.CTool speed shall be 2500 rpm for screw sizes No. 4 through No. 10. Tool speedof 1800 rpm is recommended for screw sizes No. 12 and14 ; however, 2500 rpmmay be used provided care is exercised to minimize influence of high heat buildupdue to surface speed.FIG. 2 Drill-Drive Test ApparatusC1513
44、 12a3fasteners shall be representative of later production. Fastenersshall meet the minimum and quality requirements for tappingscrews in accordance withANSI/ASME B18.6.4,ANSI/ASMEB18.18, and Practice F1470, or the pertinent standard, which-ever is more restrictive. Compliance is determined by testr
45、eports submitted by a qualified testing laboratory.12.1.2 Sheet SteelSteel description, including materialspecification, yield strength, and minimum uncoated steelthickness noted.12.2 Sharp point screws shall be tested using 33 mil (0.84mm) steel.12.3 Drill point screws shall be tested using 54 mil
46、(1.37mm) steel.13. Specimen Preparation13.1 Where the number of steel coupon specimens is notnoted in the specific standard, a minimum of three steel couponspecimens shall be tested to show compliance with the appro-priate standard and to determine the minimum uncoated steelthickness and strengths.
47、Steel tension test shall be performed inaccordance with Test Methods and Definitions A370.13.2 Screw FastenersA minimum of three test specimensare to be tested for tension (pull-out) and for the lap shearconnection. If the result from any one test is more than 15 %higher or lower than the other two,
48、 the lowest test value is used,unless an additional three tests are performed. Then use theaverage results of all six tests, regardless of the variation.14. Procedure14.1 If any of the first lot on the drill-drive testing fails, testanother lot. If two of that lot fail, the entire lot fails.15. Dime
49、nsional Measurement15.1 Self-Piercing ScrewsANSI/ASME B18.6.4.15.2 Self-Drilling Tapping ScrewsSAE J78.16. Ductility Test16.1 Self-Piercing ScrewsANSI/ASME B18.6.4.16.2 Self-Drilling Tapping ScrewsSAE J78.17. Torsional Strength17.1 Self-Piercing ScrewsANSI/ASME B18.6.4.17.2 Self-Drilling Tapping ScrewsSAE J78.18. Inspection18.1 Inspection of the steel screws shall be agreed uponbetween the purchaser and producer or supplier as part of thepurchase agreement.19. Rejection and Rehearing19.1 Rejection of steel screws that fail to con
