ASD-STAN TR 4609-2015 Aerospace series Spiral drive recesses for threaded fasteners Geometrical definition and technical requirements (Edition 1).pdf

1、ASD-STAN Technical Report Rapport Technique ASD-S TAN ASD-STAN Fachbericht TR 4609 Edition 1 February 2015 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 775 8131 - www.asd-stan.orgICS: De

2、scriptors: ENGLISH VERSION Aerospace series Spiral drive recesses for threaded fasteners Geometrical definition and technical requirements Srie arospatiale Empreintes spiral pour vis Dfinition gomtrique et exigence technique Luft- und Raumfahrt Spiral-Innenantrieb fr Schrauben Definition der Geometr

3、ie und Technische Anforderungen This Technical Report was drawn up by the Mechanical Domain of ASD-STAN. The reason which led to the publication of the document as a Technical Report is explained in the foreword. Edition approved for publication 1stFebruary 2015 Mechanical Domain Copyright 2015 by A

4、SD-STAN Page 2 TR 4609:01-2015 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Required characteristics: Configuration Dimensions Tolerances .5 3 Designation 6 4 Recess gauging .6 5 General technical requirements 10 5.1 Test apparatus 10 5.1.1 Fixture 10 5.1.2 Torsion machine . 10 5.1.3 Driver

5、bit 10 5.1.4 Test specimens . 10 7 Detail technical requirements 11 Bibliography . 13 Page 3 TR 4609:01-2015 Foreword The main task of ASD-STAN is to prepare EN standards. In exceptional circumstances, however, the publication of a Technical Report of one of the following types may be proposed: type

6、 1, the subject is still under technical development requiring wider exposure; type 2, a Technical Domain has collected data of a different kind from that which is normally published as a European Standard. The Mechanical Domain decided to publish this document in the form of a Technical Report of t

7、ype 2, as it contains only general guidelines. Technical Reports are normally published in a trilingual version. Due to the volume of this document, the report is published, as an exception, in three separate language versions. Page 4 TR 4609:01-2015 Introduction Aerospace and Defence Standardisatio

8、n (ASD-STAN) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent “Spiral Drive System for Threaded Fasteners“ EP1025370B1. ASD-STAN takes no position concerning the evidence, validity and scope of this patent right. The holder of this pat

9、ent right has assured ASD-STAN that he/she is willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with ASD-STAN. Information may be obtained fr

10、om: Phillips Screw Company 1 Van De Graaff Drive, Suite 404 Burlington, Massachusetts, 01803 USA Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. ASD-STAN shall not be held responsible for identify

11、ing any or all such patent rights. The Standardization Committee ASD-STAN decided to publish this document in the form of a Technical Report of type 2 in order to facilitate the updating of this document. Page 5 TR 4609:01-2015 1 Scope This Technical Report specifies dimensions, tolerances, characte

12、ristics and qualification requirements for MORTORQ Spiral Drive Recesses 1). 2 Required characteristics: Configuration Dimensions Tolerances Configuration shall be in accordance with Figure 1. Dimensions and tolerances shall conform with Figure 1 and Table 1 and are expressed in millimetres. Key D D

13、imension recess diameter E Dimension root diameter A Penetration depth per fastener part standard (measured with the Gauge shown in Figure 3). Figure 1 Spiral drive recess form Table 1 Recess dimensions D E Drive size Recess code Recess diameter Root diameter max. Nom. MT-000 000 1,905 0,902 MT-00 0

14、0 3,124 1,486 MT-0 0 4,379 2,085 MT-1 1 6,160 2,898 1) MORTORQ is the trade name of a product supplied by licensees of the Phillips Screw Company. This information is given for the convenience of users of this European Technical Report and does not constitute an endorsement by ASD-STAN nor CEN of th

15、e product named. Equivalent products may be used if they can be shown to lead to the same results. Page 6 TR 4609:01-2015 MT-2 2 7,874 3,708 MT-3 3 9,035 4,257 MT-4 4 10,935 5,156 MT-5 5 12,911 6,093 MT-6 6 15,133 7,140 MT-7 7 20,378 9,619 3 Designation EXAMPLE Description block RECESS Identity bloc

16、k TR4609-2 Number of this Technical Report Recess code (see Table 1) 4 Recess gauging Two varieties of penetration gauges for acceptance inspection purposes should be used to gauge the recess, the hand plug type as depicted in Figure 2, with the dimensions shown in Table 2 and the dial indicating ty

17、pe as shown in Figure 3, with the dimensions shown in Table 3. Penetration dial type gauge: Using the appropriate size penetration gauge, check the zero adjustment against a known flat piece of steel stock. Insert the penetration element into the recess and firmly push the top of the recess against

18、the bottom of the gauge body. Measure and record the gauge penetration. The reading shall be within acceptable limits per application part standard. Hand plug type gauges: Using light finger pressure only, place the appropriate GO gauge into the recess until resistance is felt. The GO element should

19、 enter and bottom in the recess. Using light finger pressure only attempt to place the appropriate NO-GO gauge element into the recess. The NO-GO gauge element should not enter beyond the acceptable fall away limit at the head surface of the screw. Page 7 TR 4609:01-2015 Key A No-go element recess d

20、iameter B Go element recess diameter 1 No-go element 2 Go element 3 Handle 4 Fastener under inspection A Recess depth Figure 2 GO and NO-GO Recess gauge Configuration Page 8 TR 4609:01-2015 Table 2 Recess gauge Dimensions Dimensions in millimetres A B Drive size NO-GO GO min. Ref. max. Ref. MT-000 1

21、,905 1,798 MT-00 3,124 3,018 MT-0 4,379 4,272 MT-1 6,160 6,053 MT-2 7,874 7,767 MT-3 9,035 8,928 MT-4 10,935 10,828 MT-5 12,911 12,804 MT-6 15,133 15,027 MT-7 20,378 20,272 Page 9 TR 4609:01-2015 Key 1 Standard metric dial gauge with numerals reading anti-clockwise 2 Set screw 3 Gauge body 4 Gauge p

22、in 5 Fastener under inspection A to G, see Table 3. Figure 3 Recess penetration gauge and gauge pin Configuration Page 10 TR 4609:01-2015 Table 3 Recess gauge pin Dimensions Dimensions in millimetres Driver size A B C D E F G MT-000 6,350 25,400 1,892 2,794 9,906 1,768 1,588 MT-00 6,350 25,400 3,048

23、 2,794 9,906 2,946 1,588 MT-0 6,350 25,400 4,293 2,794 9,906 4,191 1,588 MT-1 12,700 25,400 6.045 2,921 9,779 5,944 1,588 MT-2 12,700 25,400 7,772 2,921 9,779 7,620 1,588 MT-3 12,700 25,400 8,966 5,080 7,620 8,738 1,588 MT-4 12,700 25,400 10,871 5,080 7,620 10,592 1,588 MT-5 15,875 25,400 12,802 5,0

24、80 7,620 12,522 1,588 MT-6 16,510 25,400 14,961 5,080 7,620 14,681 1,588 MT-7 22,225 31,750 20,625 5,080 7,620 19,921 1,588 5 General technical requirements 5.1 Test apparatus 5.1.1 Fixture The test fixture shall be capable of maintaining alignment with the fastener axis, ensuring non-rotation of th

25、e fastener, applying a specified end load and applying torque in both clockwise and anti-clockwise directions. The fixture shall not resist any tendency of the driver bit to cam out of the recess during the test. 5.1.2 Torsion machine Torsion machines or other power tools shall conform to applicable

26、 requirements. 5.1.3 Driver bit The driver bit shall be appropriate for the recess being tested as defined in the applicable military standards, industry standards or manufacturers data. Unless otherwise specified, the driver bit shall be in accordance with the requirements of industry standards. 5.

27、1.4 Test specimens The shank of the fastener may be modified to ensure non-rotation during testing. The clamp or non-rotation device shall be located within two nominal diameters of the fastener from the head to shank junction. Page 11 TR 4609:01-2015 7 Detail technical requirements The test torque

28、verification are: a) Measure flatness of surface at the recess periphery and record flatness. b) Place fastener in a suitable test fixture (see Figure 4). c) Insert the driver bit into the recess of the fastener, ensuring that the bit is free to move in or out of the recess but that the bit axis is

29、constrained within 1 of angular alignment with the fastener axis. d) Apply an end load as specified in the fastener standard or other applicable document. If none is specified, apply an end load of 90 1 Newtons (20 0,25) pounds. The total end load shall be effective at bit/fastener juncture. e) With

30、 the bit inserted into the recess and the end load applied (but no torque applied), zero the torque measuring device. f) Apply the torque slowly in the installation direction at a smooth, continuous rate until the minimum torque, as specified in Table 4, has been reached. g) Record the applied torqu

31、e and mode of failure, if any. h) Disengage the fastener and driver. i) Visually examine recess in accordance with the applicable fastener standard and record condition of recess. Measure and record flatness of surface at recess periphery. j) Repeat a) thru i) applying torque in the removal directio

32、n, using the same driver bit and fastener. Figure 4 Test fixture Page 12 TR 4609:01-2015 Table 4 Wrench torque values Nominal fastener diameter Wrench torque Drive size mm inches Nm min. 2 #2 0,7 MT-000 2,5 #3 0,7 MT-000 3 #4 3 MT-00 3,5 #6 3,3 MT-00 4 #8 8 MT-0 5 #10 11 MT-1 6 1/4 20 MT-1 7 30 MT-2

33、 8 5/16 40 MT-2 10 3/8 65 MT-3 7/16 130 MT-4 12 200 MT-5 14 1/2 200 MT-5 16 9/16 320 MT-6 18 5/8 320 MT-6 20 3/4 790 MT-7 Page 13 TR 4609:01-2015 Bibliography 1 ISO 128 (all parts), Technical drawings General principles of presentation 2 ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out