1、Designation: C1002 07 (Reapproved 2013)C1002 14Standard Specification forSteel Self-Piercing Tapping Screws for the Application ofGypsum Panel Products or Metal Plaster Bases to WoodStuds or Steel Studs1This standard is issued under the fixed designation C1002; the number immediately following the d
2、esignation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use
3、 by agencies of the U.S. Department of Defense.1. Scope Scope*1.1 This specification covers steel self-piercing tapping screws for use in fastening gypsum panel products and metal plasterbases to cold-formed steel studs less than 0.033 in. (0.84 mm) in thickness and wood members, and for fastening g
4、ypsum panelproducts to gypsum board.1.2 This specification also covers test methods for determining performance requirements and physical properties.1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses areapproximate and are for in
5、formation only.1.4 The following safety hazards caveat pertains only to the test methods described in this specification: This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriat
6、e safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A548 Specification for Steel Wire, Carbon, Cold-Heading Quality, for Tapping or Sheet Metal Screws (Withdrawn 1989)3A568/A568M Specification for Steel, Shee
7、t, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forC11 Terminology Relating to Gypsum and Related Building Materials and SystemsC1396/C1396M Specification for Gypsum BoardC645 Specification for Nonstructural Steel Framing MembersC847 Specification
8、 for Metal LathC1396/C1396M Specification for Gypsum Board3. Terminology3.1 Definitions: For definitions relating to gypsum and related building materials and systems, see Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 self-piercing, vthe ability to penetrate without benefi
9、t of a pre-drilled hole with sharp-point angles of not more than 30.3.2.2 spin-out, vfor a screw, the continued rotation of a screw without further penetration into the substrate.4. Classification4.1 Steel screws covered by this specification are of four types of thread configurations:4.1.1 Type G,
10、course-pitch high-thread self-piercing screws for fastening gypsum board to gypsum board.4.1.2 Type S, fine-thread screw for fastening gypsum board to cold formed steel members.1 This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems a
11、nd is the direct responsibility ofSubcommittee C11.02 on Specifications and Test Methods for Accessories and Related Products.Current edition approved Oct. 1, 2013Aug. 15, 2014. Published October 2013October 2014. Originally approved in 1983. Last previous edition approved in 20072013as C1002 07.C10
12、02 07 (2013). DOI: 10.1520/C1002-07R13.10.1520/C1002-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The
13、 last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequ
14、ately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM I
15、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.3 Type W, course-thread screw for fastening gypsum board to wood members.4.1.4 Type A, course-pitch tapping screw thread for fastening metal plaster bases to wood or cold-formed steel.5. Materials5.
16、1 Steel Wire, for manufacturing screws, Specification A548, Grades 1013 to 1022 for Type G and Type W screws.5.2 Steel Wire, for manufacturing screws, Specification A568/A568M, Grades 1018 to 1022 for Type S and Type A screws.6. Physical Properties6.1 Hardness:6.1.1 The surface of Type S, Type W, an
17、d Type A screws shall be case hardened to a depth of not less than 0.002 in. (0.05 mm)with case hardness not less than 45 HRC.6.1.2 The surface of Type G screws is not required to be case hardened.6.2 DuctilityThe screws shall have sufficient ductility to be able to withstand a 10 bend without visib
18、le signs of fracture whentested as specified in 12.6.7.7. Performance Requirements7.1 Type G Screws:7.1.1 Screws shall be able to self-pierce and drive into gypsum panel products.7.1.2 Screw threads shall be adequate to pull the head of the screw below the surface of the gypsum panel product when te
19、stedas specified in 12.6.2.7.2 Type S Screws:7.2.1 GeneralScrews shall be able to self-pierce and drive into cold-formed steel members in less than 2 s, when tested asspecified in 12.6.3.1.7.2.2 Screws for Fastening Gypsum Panel ProductsScrew threads shall be adequate to pull the head of the screw b
20、elow thesurface of the gypsum panel product, without spin-out, when tested as specified in 12.6.3.112.6.3.7.3 Type W Screws:7.3.1 GeneralScrew threads shall be able to self-pierce and drive into wood members.7.3.2 Screws for Fastening Gypsum Panel ProductsScrew threads shall be adequate to pull the
21、head of the screw below thesurface of the gypsum panel product, without spin-outspin-out, when tested as specified in 12.6.4.112.6.6.7.4 Type A Screws:7.4.1 GeneralScrew shall be able to pierce and drive into wood or cold-formed steel members.7.4.2 Screws for Fastening Metal Plaster BasesScrew threa
22、ds shall be adequate to pull a metal plaster base tightly enoughagainst the face of a wood or steel stud, without spin-out, so that when subjected to a steady pull, the plaster base will tear beforeslipping out from under the screw head, when tested in accordance with 12.6.5.112.6.4 or 12.6.5.212.6.
23、5.8. Dimensions and Permissible Variations8.1 Head Diameter:8.1.1 GeneralHeads shall be permitted to be out of round not more than 0.02 in. (0.51 mm).8.1.2 Screws for Fastening Gypsum BoardNot less than 0.315 in. (8 mm).8.1.3 Screws for Fastening Metal Plaster BasesNot less than 0.437 in. (11.1 mm).
24、8.2 Head Contour:8.2.1 Screws for Fastening Gypsum Panel ProductsThe top of the head shall be flat. The outer flange thickness shall be0.025 6 0.005 in. (0.64 6 0.13 mm). The contour beneath the flange head shall be such that the screw head shall be able to bedriven so that the head of the screw res
25、ts immediately below the surface of the gypsum panel product.8.2.2 Screws for Fastening Metal Plaster BasesThe top of the screw shall be either flat or contoured. The underside of thehead shall be flat or near flat. The threads shall extend to the underside of the head.8.3 Driving Recess:8.3.1 Screw
26、s for Fastening Gypsum BoardNo. 2 “Phillips” design, depth of recess, not less than 0.104 in. (2.64 mm).8.3.2 Screws for Fastening Metal Plaster BasesNo. 2 “Phillips” design, depth of recess, not less than 0.077 in. (1.95 mm).(1.95 mm).8.3.3 Determine depth of recess with a Phillips penetration dept
27、h gage.gauge.8.3.4 Other types of screw-driving recesses having performance values equal to those of the recesses specified are acceptable.8.4 Shank DiameterNot less than No. 6, with major diameter not less than 0.136 in. (3.45 mm).8.5 Length:8.5.1 Nominal LengthThe nominal length shall be the minim
28、um length.C1002 1428.5.2 Type W and Type A screws shall be long enough to penetrate wood members not less than 58 in. (15.9 mm).8.6 ThreadsEither single or multiple thread design.8.7 PointsSelf-piercing design.9. Finish and Appearance9.1 FormThe form shall be straight and neatly formed.9.2 ThreadsTh
29、e threads shall be clean and smooth.9.3 FinishScrews shall have a corrosion-resistant treatment. The treatment shall not inhibit adhesion to finishing compoundsnor bleed through field-applied decoration.10. Sampling10.1 Obtain not less than 90 screws from not less than five containers.11. Number of
30、Tests and Retests11.1 Test a minimum of five screws for each test. If any of the first lot fails, test 25 more screws.11.2 If two or more of the second lot fail the second test, then the represented lot fails to meet the specified requirements.12. Test Methods12.1 The following test methods set fort
31、h procedures used to determine the ability of the screws to pierce through gypsum paneland metal plaster base and into the backup material without spin-out.12.1.1 The test methods can also be used to determine whether or not alternate screw driving recesses will have performancevalues equal to those
32、 of the “Phillips” recess specified.12.2 Significance and UseThe test methods provide procedures for evaluating the physical properties and performancerequirements of steel self-piercing screws. The degree of correlation between these tests and service performance has not beendetermined.12.3 Apparat
33、us: Apparatus Shall Satisfy the Following:12.3.1 Power-Driven Drill Screw GunGun, Standard manufacture electric screw gun, turning at a minimum of 2500 r/min.capable of 4000 rpm (free spindle speed) with a depth-sensitive nose piece, supplied with a screw driving bit to fit the screw usedin the test
34、.12.3.2 Timing DeviceStop Watch, Standard stopwatch, calibrated in capable of being read110 s. to the nearest 0.1 s.12.3.3 ViceStandard machinists vice, not less than 3 in. (76 mm).12.3.4 ClampLocking pliers (“Vice-Grip”), 6 in. (152 mm). (152 mm).12.4 Materials:12.4.1 Gypsum WallboardSpecification
35、C1396/C1396M, Type X, 58 in. (16 mm) thick.12.4.2 Metal LathAs in Specification C847, diamond mesh, weight 2.5 lb/yd2 (1.4 kg/m2).12.4.3 Steel StudAs in Specification C645, 0.0179 in. (0.455 mm) thick, hardness not less than 52 HRB, size 358 in. (92.1mm). (92.1 mm).12.4.4 Wood StudDouglas fir, const
36、ruction grade, 2 by 4 or 2 by 6, nominal, containing not less than 16 % nor more than 19 %free moisture as determined by a suitable moisture meter.12.4.5 Kraft PaperPaper Joint Tape0.01Specification C475/C475Min. (0.25 mm) thick, 2 in. (51 mm) square. .12.5 Specimen Preparation:12.5.1 Cut 6-in. (152
37、-mm) square specimens from a sheet of gypsum wallboard For each test, one piece of gypsum wallboard,6 in. (150 mm) square, shall be cut from not less than 12 in. (305 mm) away (300 mm) from the edge or end. end of the gypsumwallboard.12.5.1.1 Weigh the specimens to within 1 g, and then condition at
38、a temperature of 85 6 15 F (29.5 6 5.5 C) in an atmospherehaving a relative humidity of 50 6 2 %. Individually test the specimens after constant weight is reached.12.5.2 Cut For each test, one piece of 6 in. (152(150 mm) square specimens specimen shall be cut from a sheet of metal lathnot less than
39、4 in. (102(100 mm) away from the edge or end.12.5.3 Cut 12 in. (305 mm) long specimens from a length of a steel stud.12.5.3 Cut 12 in. (305 mm) long specimens from a length of wood stud. Each member to be tested shall be cut into testspecimens not less than 18 in. (460 mm) long.12.6 Procedure:12.6.1
40、 General: GeneralDrive the screws not closer than 58 in. (16 mm) (16 mm) from the edges of the gypsum wallboardand not closer than 2 in. (50 mm) from the edges of the metal lath.C1002 14312.6.2 Type G Screw TestRigidly support two pieces of gypsum board sandwiched together. With a screw gun, drive t
41、he screwspecimen into the gypsum boards, so that the head of the screw is below the surface of the gypsum board.12.6.2.1 When driving Type G screw specimens, use the force of less than 20 lbf (89 N).12.6.2.2 Interpretation of ResultsObserve if the screws are pulled below the surface of the gypsum bo
42、ard. If any of the fivescrews fail, the lot has failed the test. Retest in accordance with Section 11.12.6.2.3 ReportReport whether the lot has passed or failed the test.12.6.2.4 Precision and BiasNo information is presented about either the precision or the bias for the Type G screw test forpulling
43、 the screw head below the surface of the gypsum board, because the test result is non-quantitative.12.6.3 Type “S” Screws Test for Fastening Board to Steel:12.6.3.1 When driving Type S screws use a force of 30 lbfAssemble the member, gypsum wallboard, and paper joint tape ona rigid, flat surface. (S
44、ee Fig. 1(133N). for studs.)12.6.3.2 Prior to performing the test, drive several screws without the paper joint tape to set the depth of the nose piece on thescrew gun, allowing the screws to be driven below the surface of the wallboard without breaking the gypsum wallboard face paper.12.6.3.3 Rigid
45、ly support a piece of gypsum wallboard as described in Drive the 12.4.1 over a length of steel stud as describedin 12.4.3. With a screw gun as described in screw 12.3, drive five screw specimens through the wallboard and into the steel.Measure the length of time it takes to drive each screw so that
46、the screw head is through the paper joint tape, using the screw gun,while applying a force (dead weight and applied force) of 30 lbf (112.2 N). Drive the screw to below the surface of the gypsumboard and observe if there was spin-out.wallboard. Record if the screw has spun out and if it exceeds 2 s
47、to pull the head of thescrew below the surface of the gypsum wallboard.12.6.3.4 Interpretation of ResultsCalculate the average time to drive the five screw specimens through the wallboard and intothe steel. If any of the five specimens fail to pull the screw head below the surface of the gypsum boar
48、d or spins out, or if theaverage time is more than 2 s, the lot has failed. Retest in accordance with Section 11.12.6.3.5 ReportReport whether the lot has passed or failed the test and the reason for failure.12.6.3.6 Precision and BiasNo information is presented about either the precision or the bia
49、s for the Type S screw test formeasuring spin-out or pulling the screw head below the surface of the gypsum board, because the test result inis non-quantitative.No information is presented about either the precision or the bias for the Type S screw test for measuring the time to drive thescrew, because no material having an acceptable reference value is available.12.6.4 Type A Screws for Fastening Metal Lath to Steel:12.6.4.1 When driving Type A screws, use a force of 30 lbf (133 N).12.6.4.2 Rigidly support a piece of metal la
