1、Designation: C954 10Standard Specification forSteel Drill Screws for the Application of Gypsum PanelProducts or Metal Plaster Bases to Steel Studs from 0.033in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness1This standard is issued under the fixed designation C954; the number immediately following th
2、e designation 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
3、use by agencies of the Department of Defense.1. Scope*1.1 This specification covers minimum requirements forsteel drill screws for use in fastening gypsum panel products ormetal plaster bases to steel members from 0.033 in. (0.84 mm)to 0.112 in. (2.84 mm) in thickness.1.2 This specification also cov
4、ers physical properties andtest methods for determining performance requirements.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4
5、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. It is the responsibility of the user of thisstandard to establish appropriate safety and health p
6、racticesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2A510 Specification for General Requirements for WireRods and Coarse Round Wire, Carbon SteelC11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC1396/C1396
7、M Specification for Gypsum BoardC1513 Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections3. Terminology3.1 Definitions:3.1.1 For definitions relating to gypsum and related buildingmaterials and systems, see Terminology C11.3.2 Definitions of Terms Specific to This Standa
8、rd:3.2.1 steel drill screwself-drilling tapping screw with theability to drill its own hole, form or cut mating threads withoutdeforming its own threads or breaking during assembly.4. Materials4.1 Screws shall be manufactured from Grade 1018 to 1022steel wire manufactured in accordance with Specific
9、ationA510.5. Physical Properties5.1 Metallurgical Requirements:5.1.1 The surface of the screw shall be carbonitrided to adepth of 0.004 to 0.008 in. (0.10 to 0.20 mm).5.1.2 The core hardness shall be 32 to 40 HRC after beingdrawn at a minimum temperature of 625 F (330 C).5.1.3 The screw shall have n
10、o band of free ferrite betweenthe case and core nor shall the case contain appreciableamounts of retained austenite or other soft constituents.5.1.4 Surface hardness shall be determined by a microhardness instrument at “the root of the thread profile,” asexposed by removal of enough material to form
11、 a flat surfacealong the length of the screw.5.1.5 DuctilityScrews shall have sufficient ductility to beable to withstand a 5 bend without visible signs of fracturewhen tested as specified in paragraph 8.2.1 of SpecificationC1513.5.2 Dimensions and Permissible Variations:5.2.1 General:5.2.1.1 Head D
12、iameter The head of the screw shall not beout of round more than 0.021 in. (0.51 mm) and have thefollowing shape and dimensions:1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.
13、02 on Specifications and Test Methods for Accessories andRelated Products.Current edition approved May 1, 2010. Published June 2010. Originallyapproved in 1981. Last previous edition approved in 2007 as C95407. DOI:10.1520/C0954-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org
14、, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary 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 C7
15、00, West Conshohocken, PA 19428-2959, United States.5.2.1.2 Screw Diameter Screws shall have a major diam-eter not less than 0.136 in. (3.45 mm).5.2.1.3 Points, shall provide for self-drilling into steel studsfrom 0.333 in. (0.84 mm) to 0.112 in. (2.84 mm) in thicknessand meet the performance tests
16、in Section 6.5.2.1.4 Driving Recess, shall be a No. 2 “Phillips” designwith a minimum depth of 0.104 in. (2.64 mm) as determinedwith a “Phillips” penetration depth gage or a recess of equalperformance.5.2.1.5 LengthNominal lengths shall be minimum length.5.2.2 Screws for Fastening Gypsum Board:5.2.2
17、.1 Screw-head minimum diameter shall be 0.3145 in.(8.00 mm).5.2.2.2 The top of the head shall be flat. The outer flangethickness shall be 0.025 6 0.005 in. (0.64 6 0.13 mm). Thecontour beneath the flange head shall be such that the screwhead shall be able to be driven so that the head of the screwre
18、sts immediately below the surface of the gypsum panelproducts.5.2.2.3 The threads shall extend to the lower edge of thehead contour.5.2.3 Screws for Fastening Metal Plaster Bases:5.2.3.1 Screw head minimum diameter shall be 0.437 in.(11.1 mm).5.2.3.2 The top of the head shall be flat or contoured. T
19、heunderside of the head shall be flat.5.2.3.3 The threads shall extend to the underside of thehead.6. Performance Requirements6.1 Spin-Out:6.1.1 Screws shall self-drill and drive into a stud 0.0598 in.(1.5 mm) thick with an approximate hardness of 65 HRBwithout spin-out.6.1.2 Screws shall self drill
20、 and drive into a stud 0.105 in.(2.7 mm) thick, with a hardness of 80 HRB without spin-out.6.2 Performance:6.2.1 When tested in accordance with Section 10, screwsshall meet the requirements as follows:6.2.1.1 Gypsum Panel ProductsScrew threads shall beadequate to pull the head of the screw below the
21、 surface of thegypsum panel through four layers of kraft paper placed overthe gypsum panel products and a steel stud 0.033 in. (0.84 mm)thick when tested in accordance with 10.5.1.6.2.1.2 Metal Plaster BasesScrew threads shall be ad-equate to pull metal lath tight against the flange of a steel stud0
22、.033 in. (0.84 mm) thick so that when subjected to a steadypull, the lath will tear and not slip out from under the screwhead when tested in accordance with 10.5.1.7. Finish and Appearance7.1 Screws shall be corrosion-resistant treated with a mate-rial which will not inhibit adhesion to joint compou
23、nds orplaster and will not bleed through decorative finishes.7.2 Screws shall be straight, clean, smooth, neatly formed,and free of defects such as burrs and deformations.8. Sampling8.1 Obtain not less than 90 screws from not less than fivecontainers.9. Number of Tests and Retests9.1 Test a minimum
24、of five screws for each test. If any of thefirst lot fails, test 25 more screws.9.2 If two or more of the second lot fail the second test, thenthe represented lot fails to meet the specified requirements.10. Test Method10.1 Summary of Test Method:10.1.1 This test method utilizes steel screws designe
25、d foruse to hold gypsum panel products and metal plaster basematerials applied with power-driven screw guns of 2500 r/minmaximum to steel studs.10.2 Significance and Use:10.2.1 This test method evaluates the ability of steel drillscrews used to secure gypsum panel products and metal plasterbases to
26、certain steel framing members.10.2.2 The test shall be conducted in a laboratory or on-site.10.3 Apparatus:10.3.1 Power-Driven Drill Screw Gun, having the capacityof turning 2500 r/min maximum (free spindle speed).10.3.2 A Vice, or similar device to support the stud duringthe test.10.4 Materials:10.
27、4.1 Kraft Paper, 0.010 in. (0.25 mm) thick.10.4.2 Steel StudOne section of 0.033-in. thick stud(0.84-mm), 1 section of 0.0598-in. (1.5-mm) thick stud andwith a hardness of 65 HRB, and 1 section of 0.105-in.(2.7-mm) thick stud and with a hardness of 80 HRB.10.4.3 Gypsum Wallboard Specification C1396/
28、C1396M,Type X,58 in. (16 mm) thick.10.4.4 Screw Specimens, to be tested.10.4.5 Diamond Mesh Metal Lath, 2.5/lb/yd2.10.5 Procedure for Performance Tests:10.5.1 Using the screw specimen, attach gypsum board ormetal lath to center of a flange of a steel stud which has beensecurely and rigidly supported
29、.10.5.1.1 Grasp the metal lath with locking pliers and pullsteadily in a plane parallel to the plane of the lath. Observewhether the lath tears before it slips out from under the screwhead.10.5.1.2 With the drill propelling the screw at 2500 r/minmaximum (free spindle speed), exert a total pressure
30、of 30 lbf(135.5 N) (dead weight plus applied force).10.6 Precision and BiasNo statement is made regardingthe precision and bias of this test method, since the result of thetest method is reported in nonnumerical terms.11. Inspection11.1 Inspection of steel drill screws shall be agreed upon bythe pur
31、chaser and the producer or supplier as part of thepurchase agreement.12. Rejection and Rehearing12.1 Rejection of steel drill screws that fail to conform tothe requirements of this specification shall be reported to theC954 102producer or supplier promptly and in writing within 10working days from r
32、eceipt of shipment by the purchaser.Notice of rejection shall contain a specific statement as to therespects in which the screws have failed to conform to therequirements of this specification. In case of dissatisfactionwith the results of the test, and at the request of the producer orsupplier, suc
33、h notice of rehearing shall be supported by resultsof a test conducted by a mutually agreeable independentlaboratory.13. Certification13.1 When specified in the purchase agreement, the pro-ducer or supplier shall furnish a report certifying that, at timeof shipment, the screws were in compliance wit
34、h the require-ments of this specification.14. Packaging and Marking14.1 Screws shall be packaged in substantial commercialcontainers constructed so as to preserve the contents in goodcondition and to ensure acceptance and safe delivery bycommon or other carriers, at the lowest rate, to the point ofd
35、elivery.14.2 The containers shall be so constructed that the contentscan be partially removed without destroying the containersability to serve as a receptacle for the remainder of thecontents.14.3 Individual packages and shipping containers shall bemarked with the type and length of screw and the n
36、ame of themanufacturer or distributor.15. Keywords15.1 steel drill screw; steel self-drilling tapping screwSUMMARY OF CHANGESCommittee C11 has identified the location of selected changes to this specification since the last issue,C95407, that may impact the use of this specification. (Approved May 1
37、, 2010)(1) Corrected “HRB” to “HRC” in 5.1.2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, an
38、d the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revisi
39、on of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you sh
40、ouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C954 103
