1、Designation:C95410 Designation: C954 11Standard 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 immed
2、iately following the 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
3、 been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers minimum requirements for steel drill screws for use in fastening gypsum panel products or metalplaster bases to steel members from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in thickness.1.2 This s
4、pecification also covers physical properties and test methods for determining performance requirements.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not
5、considered standard.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 appro
6、priate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon SteelC11 Terminology Relating to Gypsum and Related Building Ma
7、terials and SystemsC847 Specification for Metal LathC955 Specification for Load-Bearing (Transverse and Axial) Steel Studs, Runners (Tracks), and Bracing or Bridging for ScrewApplication of Gypsum Panel Products and Metal Plaster BasesC1396/C1396M Specification for Gypsum BoardC1513 Specification fo
8、r Steel Tapping Screws for Cold-Formed Steel Framing Connections3. Terminology3.1 Definitions:3.1.1 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 steel drill screwself-drilling tapping screw
9、 with the ability 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 1022 steel wire manufactured in accordance with Specification A510.5. Physical Properties5.1 Metallurgical
10、Requirements :5.1.1 The surface of the screw shall be carbonitrided to a depth of 0.004 to 0.008 in. (0.10 to 0.20 mm).5.1.2The5.1.2 The core hardness shall be 32 to 40 HRC after being drawn at a minimum temperature of 625 F (330 C).5.1.3 The screw shall have no band of free ferrite between the case
11、 and core nor shall the case contain appreciable amounts ofretained austenite or other soft constituents.1This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility ofSubcommittee C11.02 on Specifications a
12、nd Test Methods for Accessories and Related Products.Current edition approved MayDec. 1, 2010.2011. Published June 2010.January 2012. Originally approved in 1981. Last previous edition approved in 20072010 asC95407.C95410. DOI: 10.1520/C0954-101.2For referenced ASTM standards, visit the ASTM website
13、, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication
14、 of what changes have been made to the previous version. Becauseit may not be technically possible to adequately 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 conside
15、red the official document.*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.5.1.4 Surface hardness shall be determined by a micro hardness instrument at “the root of the
16、thread profile,” as exposed byremoval of enough material to form a flat surface along the length of the screw.5.1.5 DuctilityScrews shall have sufficient ductility to be able to withstand a 5 bend without visible signs of fracture whentested as specified in paragraph 8.2.1 of Specification C1513.5.2
17、 Dimensions and Permissible Variations:5.2.1 General:5.2.1.1 Head Diameter The head of the screw shall not be out of round more than 0.021 in. (0.51 mm) and have the followingshape and dimensions:5.2.1.2 Screw Diameter Screws shall have a major diameter not less than 0.136 in. (3.45 mm).5.2.1.3 Poin
18、ts, shall provide for self-drilling into steel studs from 0.333 in. (0.84 mm) to 0.112 in. (2.84 mm) in thickness andmeet the performance tests in Section 6.5.2.1.4 Driving Recess, shall be a No. 2 “Phillips” design with a minimum depth of 0.104 in. (2.64 mm) as determined witha “Phillips” penetrati
19、on depth gage or a recess of equal performance.5.2.1.5 LengthNominal lengths shall be minimum length.5.2.2 Screws for Fastening Gypsum Board:5.2.2.1 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 flange thickness shall be 0.025 6 0.005
20、in. (0.64 6 0.13 mm). The contourbeneath the flange head shall be such that the screw head shall be able to be driven so that the head of the screw rests immediatelybelow the surface of the gypsum panel products.5.2.2.3 The threads shall extend to the lower edge of the head contour.5.2.3 Screws for
21、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. The underside of the head shall be flat.5.2.3.3 The threads shall extend to the underside of the head.6. Performance Requirements6.1 Spin-Out:6.1.1 S
22、crews shall self-drill and drive into a stud 0.05980.0538 in. (1.5(1.4 mm) thick with an approximate hardness of 65 HRBwithout spin-out.6.1.2 Screws shall self drill and drive into a stud 0.1050.0966 in. (2.7(2.5 mm) thick, with a hardness of 80 HRB withoutspin-out.6.2 Performance:6.2.1 When tested
23、in accordance with Section 10 and 11, screws shall meet the requirements as follows:6.2.1.1 Gypsum Panel ProductsScrew threads shall be adequate to pull the head of the screw below the surface of the gypsumpanel through four layers of kraft paper placed over the gypsum panel products and a steel stu
24、d 0.033 in. (0.84 mm) thick whentested in accordance with 10.5.1. When tested in accordance with Section 11, screw threads shall be capable of pulling the headof the screw below the surface of the gypsum board6.2.1.2 Metal Plaster BasesWhen tested in accordance with Section 10, screw threads shall b
25、e adequate to pull metal lathtight against the flange of a steel stud 0.033 in. (0.84 mm) thick so that when subjected to a steady pull, the lath will tear and notslip out from under the screw head when tested in accordance with 10.5.1.7. Finish and Appearance7.1 Screws shall be corrosion-resistant
26、treated with a material which will not inhibit adhesion to joint compounds or plaster andwill 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 le
27、ss than five containers.9. Number of Tests and Retests9.1 Test a minimum of five screws for each test. If any of the first lot fails, test 25 more screws.9.2 If two or more of the second lot fail the second test, then the represented lot fails to meet the specified requirements.10. Test Method Metal
28、 Lath Test Method10.1 Summary of Test Method:10.1.1 This test method utilizes steel screws designed for use to hold gypsum panel products and metal plaster base materialsapplied with power-driven screw guns of 2500 r/minrpm maximum to steel studs.10.2 Significance and Use:10.2.1 This test method eva
29、luates the ability of steel drill screws used to secure gypsum panel products and metal plaster basesto certain steel framing members.C954 11210.2.2 The test shall be conducted in a laboratory or on-site.10.3 Apparatus:10.3.1 Power-Driven Drill Screw Gun, having the capacity of turning 2500 r/min ma
30、ximum (free spindle speed).10.3.2A , capable of 2500 rpm (free spindle speed) with a depth-sensitive nose piece, supplied with a screw driving bit to fit thescrew used in the test.10.3.2 Vice, or similar device to support the stud during the test. or similar device, to support the stud during the te
31、st.10.3.3 ClampLocking pliers (for example, Vise-Grips), 6 in. (152 mm).10.4 Materials:10.4.1 Kraft Paper, 0.010 in. (0.25 mm) thick.10.4.2Steel StudOne section of 0.033-in. thick stud (0.84-mm), 1 section of 0.0598-in. (1.5-mm) thick stud and with a hardnessof 65 HRB, and 1 section of 0.105-in. (2.
32、7-mm) thick stud and with a hardness of 80 HRB.10.4.3Specification C955, one section of 0.033-in. thick stud (0.84-mm).10.4.2 Gypsum Wallboard Specification C1396/C1396M, Type X,58 in. (16 mm) thick.10.4.410.4.3 Screw Specimens, to be tested.10.4.510.4.4 Diamond Mesh Metal Lath, 2.5/lb/yd, Specifica
33、tion C847, diamond mesh, weight 2.5 lb/yd2. (1.4 kg/m2).10.5 Procedure for Performance Tests:10.5.1 Using the screw specimen, attach gypsum board or metal lath to center of a flange of a steel stud which has been securelyand rigidly supported.10.5.1.1 Grasp the metal lath with locking pliers and pul
34、l steadily in a plane parallel to the plane of the lath. Observe whetherthe lath tears before it slips out from under the screw head.10.5.1.2With the drill propelling the screw at 2500 r/min maximum (free spindle speed), exert a total pressure of 30 lbf (135.5N) (dead weight plus applied force).10.6
35、 Precision and BiasNo statement is made regarding the precision and bias of this test method, since the result of the testmethod is reported in nonnumerical terms.11.Inspection11.1Inspection of steel drill screws shall be agreed upon by the purchaser and the producer or supplier as part of the purch
36、aseagreement.11. Penetration Test Method11.1 Significance and UseThis test method provides a procedure for evaluating the ability of steel drill screws to pull the headof a screw below the surface of gypsum wallboard. It shall be used to determine compliance with this specification. The degreeof per
37、formance of this test method with service performance has not been determined.11.2 ApparatusApparatus shall satisfy the following:11.2.1 Power-Driven Drill Screw Gun, capable of 2500 rpm (free spindle speed) with a depth-sensitive nose piece, supplied witha screw driving bit to fit the screw used in
38、 the test.11.3 MaterialsMaterials shall satisfy the following:11.3.1 Gypsum WallboardSpecification C1396/C1396M, Type X,58 in. (16 mm) thick.11.3.2 Steel StudSpecification C955, one section of 0.033-in. thick stud (0.84-mm), 1 section of 0.0538-in. (1.4-mm) thickstud with an approximate hardness of
39、65 HRB, one section of 0.0966 in. (2.5 mm) thick stud, with an approximate hardness of80 HRB.11.4 SamplingAs in Section 8.11.5 Specimen Preparation:11.5.1 Each steel stud shall be cut into test specimens not less than 18 in. (460 mm) long.11.5.2 For each test, one piece of gypsum wallboard, 6 in. (1
40、50 mm) square, shall be cut from not less than 12 in. (300 mm)from the edge or end of the gypsum wallboard.11.6 Procedure:11.6.1 Assemble the steel stud and gypsum wallboard on a rigid, flat surface.11.6.2 Prior to performing the test, drive several screws to set the depth of the nose piece on the s
41、crew gun, allowing the screwsto be driven below the surface of the wallboard without breaking the gypsum wallboard face paper.11.6.3 Drive the screw using the screw gun, while applying a force (dead weight and applied force) of 30 lbf (112.2 N). Drivethe screw to below the surface of the gypsum wall
42、board. Record if the screw has spun out and if the head of the screw was pulledbelow the surface of the gypsum wallboard.11.7 Number of Tests and Retests:11.7.1 Five specimens of members shall be tested.11.7.2 If more than one test specimen fails to meet the requirements, two more test specimens sha
43、ll be chosen for retesting.11.8 ReportReport shall indicate all specimens meeting the requirements of this specification if the screw did not spin out;C954 113or shall indicate all failing if the screw spun out.11.9 Precision and BiasNo statement is made about either the precision or bias of this te
44、st method since the result merelystates whether or not there is conformance to the criteria for success specified in the procedure.12. Rejection and Rehearing12.1Rejection of steel drill screws that fail to conform to the requirements of this specification shall be reported to the produceror supplie
45、r promptly and in writing within 10 working days from receipt of shipment by the purchaser. Notice of rejection shallcontain a specific statement as to the respects in which the screws have failed to conform to the requirements of this specification.In case of dissatisfaction with the results of the
46、 test, and at the request of the producer or supplier, such notice of rehearing shallbe supported by results of a test conducted by a mutually agreeable independent laboratory. Inspection12.1 Inspection of steel drill screws shall be agreed upon by the purchaser and the producer or supplier as part
47、of the purchaseagreement.13. Certification13.1When specified in the purchase agreement, the producer or supplier shall furnish a report certifying that, at time of shipment,the screws were in compliance with the requirements of this specification. Rejection and Rehearing13.1 Rejection of steel drill
48、 screws that fail to conform to the requirements of this specification shall be reported to the produceror supplier promptly and in writing within 10 working days from receipt of shipment by the purchaser. Notice of rejection shallcontain a specific statement as to the respects in which the screws h
49、ave failed to conform to the requirements of this specification.In case of dissatisfaction with the results of the test, and at the request of the producer or supplier, such notice of rehearing shallbe supported by results of a test conducted by a mutually agreeable independent laboratory.14. Packaging and Marking14.1Screws shall be packaged in substantial commercial containers constructed so as to preserve the contents in good conditionand to ensure acceptance and safe delivery by common or other carriers, at the lowest rate, to the point of delivery.14
