1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21503-3 SANS 1143:2008Edition 2.1Any reference to SABS 1143 is deemedto be a reference to this standard(Government Notice No. 1373 of 8 No
4、vember 2002)SOUTH AFRICAN NATIONAL STANDARD Mushroom- and countersunk-head bolts and nuts Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 1143:2008 Edition 2.1 Table of changes Change N
5、o. Date Scope Amdt 1 2008 Amended to change the designation of SABS standards to SANS standards and to update the definition of “acceptable”. Foreword This South African standard was approved by National Committee SABS TC 2, Screw threads and fasteners, in accordance with procedures of the SABS Stan
6、dards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in September 2008. This document supersedes SABS 1143:2002 (edition 2). A vertical line in the margin shows where the text has been technically modified by amendment No. 1. Annex A forms an integral part
7、 of this document. Annexes B and C are for information only. SANS 1143:2008 Edition 2.1 1 Contents Page Foreword 1 Scope 3 2 Normative references 3 3 Definitions . 4 4 Requirements 4 5 Testing and acceptance inspection . 6 6 Packing and marking . 7 Annex A (normative) Notes to purchasers 14 Annex B
8、(informative) Quality verification of mushroom- and countersunk-head bolts and nuts 14 Annex C (informative) Dimensioning of countersunk-head bolts . 15 Bibliography . 16 SANS 1143:2008 Edition 2.1 2 This page is intentionally left blank SANS 1143:2008 Edition 2.1 3 Mushroom- and countersunk-head bo
9、lts and nuts 1 Scope This standard gives the requirements for one type of mushroom-head bolts, four types of countersunk-head bolts and hexagon and square nuts. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this stan
10、dard. All standards are subject to revision and, since any reference to a standard is deemed to be a reference to the latest edition of that standard, parties to agreements based on this standard are encouraged to take steps to ensure the use of the most recent editions of the standards indicated be
11、low. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 1700-2-1/ISO 68-1, Fasteners Part 2: Screw threads Section 1: ISO general purpose screw threads Basic profile Metric screw threads. SANS 1700-2-2/ISO 261, Fasteners Part 2:
12、 Screw threads Section 2: ISO general purpose metric screw threads General plan. SANS 1700-3-1/ISO 225, Fasteners Part 3: Forms, dimensions and designations Section 1: Bolts, screws, studs and nuts Symbols and designations of dimensions. SANS 1700-3-5/ISO 888, Fasteners Part 3: Forms, dimensions and
13、 designations Section 5: Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts. SANS 1700-3-6/ISO 3508, Fasteners Part 3: Forms, dimensions and designations Section 6: Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262. SANS 1700-3-7/ISO
14、4753, Fasteners Part 3: Forms, dimensions and designations Section 7: Ends of parts with external ISO metric thread. SANS 1700-4-1/ISO 4759-1, Fasteners Part 4: Tolerances Section 1: Bolts, screws, studs and nuts Product grades A, B and C. SANS 1700-5-1/ISO 898-1, Fasteners Part 5: General requireme
15、nts and mechanical properties Section 1: Mechanical properties of fasteners made of carbon steel and alloy steel Bolts, screws and studs. SANS 1700-5-2/ISO 898-2, Fasteners Part 5: General requirements and mechanical properties Section 2: Nuts with specified proof load values Coarse thread. SANS 114
16、3:2008 Edition 2.1 4 SANS 1700-6-2/ISO 3269, Fasteners Part 6: Testing and acceptance inspection Section 2: Acceptance inspection. SANS 1700-14-1/ISO 4032, Fasteners Part 14: Hexagon nuts Section 1: Hexagon nuts, style 1 Product grades A and B. SANS 1700-14-2/ISO 4033, Fasteners Part 14: Hexagon nut
17、s Section 2: Hexagon nuts, style 2 Product grades A and B. SANS 1700-14-3/ISO 4034, Fasteners Part 14: Hexagon nuts Section 3: Hexagon nuts Product grade C. SANS 1700-14-4/ISO 4035, Fasteners Part 14: Hexagon nuts Section 4: Hexagon thin nuts (chamfered) Product grades A and B. SANS 1700-14-5/ISO 40
18、36, Fasteners Part 14: Hexagon nuts Section 5: Hexagon thin nuts (unchamfered) Product grade B. 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract
19、, as relevant Amdt 1 3.2 agreed upon as agreed upon between the manufacturer and the purchaser 3.3 bolt-head eccentricity the displacement of the axis of the head in relation to the axis of the shank 3.4 effective length of the thread the distance between the extreme end of a bolt (including any cha
20、mfer or radius) and the unchamfered, non-countersunk leading face of a nut that is so threaded to give a free class of fit (see 4.7), that is screwed on as far as possible by hand and that is hand-tight 3.5 scant shank a shank in which the diameter of the unthreaded portion is approximately equal to
21、 the minimum pitch diameter of the screw thread 4 Requirements 4.1 Types 4.1.1 Bolts Bolts shall be one of the following types, as required (see A.1(a): a) mushroom-head nib bolts (see table 1); SANS 1143:2008 Edition 2.1 5 b) 90 countersunk-head nib bolts (see table 2); c) 90 countersunk-head slott
22、ed bolts (see table 3); d) 90 countersunk-head square-neck bolts (see table 4); e) 120 countersunk-head square-neck bolts (see table 5). 4.1.2 Nuts Nuts, with or without a washer face and with one or both faces chamfered, shall be one of the following types, as required: a) hexagon nuts; b) square n
23、uts. 4.2 Grade of bolts The grade of bolts shall be 4.6 or 4.8, as agreed upon. 4.3 Mechanical properties 4.3.1 Bolts Bolts shall comply with the mechanical property requirements of grade 4.6 or 4.8 of SANS 1700-5-1. 4.3.2 Nuts Nuts shall comply with the relevant mechanical property requirements of
24、SANS 1700-5-2, other than that for resistance to proof load. 4.4 Nominal size of bolts The nominal size of bolts shall be as required and shall be one of the sizes given in column 1 of tables 1, 2, 3, 4 or 5, as relevant to the type of bolt specified by the purchaser (see A.1(b). 4.5 Dimensions of b
25、olts 4.5.1 General The dimensions (other than length) of bolts shall conform to the appropriate values given in tables 1 to 5, as relevant, except that when bolts with scant shanks are required by the purchaser (see A.1(c) the diameter of the unthreaded portion of the shank shall not be less than th
26、e minimum pitch diameter of the screw thread. 4.5.2 Nominal length The nominal length shall be as given in SANS 1700-3-5 or as given in table 6, as required. The actual length of a bolt shall not differ from the nominal value by more than the appropriate of the tolerances given in SANS 1700-4-1. SAN
27、S 1143:2008 Edition 2.1 6 4.5.3 Thread length 4.5.3.1 Bolts of normal length The effective length of the thread on a bolt shall, subject to a plus tolerance of two pitches, conform to the appropriate value given in SANS 1700-3-1 and SANS 1700-3-5. 4.5.3.2 Short bolts Bolts that are too short (i.e. i
28、n which the nominal length/shank diameter ratio is too small) to allow the thread length specified in 4.5.3.1 above to be achieved, shall be threaded to as near to the neck, the nib, or the head (as relevant) as possible. 4.5.4 Thread run-out The thread run-outs shall comply with the requirements of
29、 SANS 1700-3-6. 4.5.6 Ends of bolts The ends of bolts shall comply with the requirements of SANS 1700-3-7. 4.5.7 Eccentricity Any bolt-head eccentricity and any eccentricity between the shank and the thread shall not exceed the appropriate maximum given in SANS 1700-4-1. 4.6 Dimensions of nuts The d
30、imensions of the nuts shall comply with the relevant requirements of SANS 1700-14-1, SANS 1700-14-2, SANS 1700-14-3, SANS 1700-14-4 or SANS 1700-14-5. 4.7 Screw threads 4.7.1 The screw threads of bolts and nuts shall be parallel throughout their length and, in the case of bolts, may be rolled or mac
31、hine cut. 4.7.2 They shall comply with the relevant requirements for coarse series threads of SANS 1700-2-1 and SANS 1700-2-2. The tolerances shall be those given in SANS 1700-4-1 for free class of fit (7H/8g). 4.8 Finish Bolts and nuts shall be free from defects such as burrs, seams, laps, scale, a
32、nd irregular surfaces that may affect their serviceability. If so required by the purchaser, bolts and nuts shall have an anti-corrosion protective coating of the type agreed upon between the supplier and the purchaser (see A.1(d) and A.2). 5 Testing and acceptance inspection All nuts and bolts shal
33、l be tested and inspected in accordance with SANS 1700-6-2. SANS 1143:2008 Edition 2.1 7 6 Packing and marking 6.1 Packing The units shall be packed in strong bags, in barrels, or in other acceptable containers. Only units that consist of the same types and dimensions shall be packed together in any
34、 one container. 6.2 Marking 6.2.1 Bolts Each bolt shall be legibly marked (by indenting or embossing) with the name, trade name or trade mark of the manufacturer. 6.2.2 Containers The following information shall be given in legible and indelible marking on each container or on an acceptable label se
35、curely attached to the container: a) the name, trade name or trade mark of the manufacturer; b) a description (that includes the type) of the contents; c) the nominal size; and d) the net mass (in kilograms) or the quantity of units. Table 1 Mushroom-head nib bolts Dimensions in millimetres Dimensio
36、ns in millimetres1 2 3 4 5 6 7 8 9 10 Head diameter Shank diameter Thickness of head Length of nib Height of nibThickness of nib D d1)B E F H Approximate radius of nibMaximum radius Nominal size of bolt Nominal thread pitch Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. R r M10 M12 M16
37、1,50 1,75 2,00 21,2 25,7 34,4 22,5 27,0 36,0 9,4211,3015,3010,5812,7016,705,0 6,0 8,0 5,8 6,8 8,9 4,0 4,7 6,5 5,0 6,0 8,0 2,1 2,6 3,5 2,5 3,0 4,0 2,1 2,6 3,5 2,5 3,0 4,0 13 15 20 0,8 1,3 1,3 M20 M24 2,50 3,00 43,4 52,1 45,0 54,0 19,1623,1620,8424,8410,0 12,0 10,9 13,1 8,0 9,5 10,0 12,0 4,5 5,5 5,0 6
38、,0 4,5 5,5 5,0 6,0 25 30 1,8 1,8 1) Not applicable to scant shank bolts. 8 SANS 1143:2008Edition 2.1Table 2 90 Countersunk-head nib bolts Dimensions in millimetresDimensions in millimetres1 2 3 4 5 6 7 8 9 10 Shank diameter Length of nib Thickness of nib Maximum theoretical diameter, sharpMinimum he
39、ad diameter d2)B E Height of nib Approximate radius of nibMaximum radius Nominal size of bolt Nominal thread pitch A D1)Min. Max. Min. Max. Min. Max. F3)R r M10 M12 M16 1,50 1,75 2,00 20 24 32 17,0 20,4 27,2 9,4211,3015,3010,5812,7016,70 5,1 6,2 8,3 6,3 7,5 10,0 2,1 2,6 3,5 2,5 3,0 4,0 1,25 1,50 2,0
40、0 8 10 13 1,0 1,3 1,8 M20 M24 2,50 3,00 40 48 34,0 40,8 19,1623,1620,8424,84 10,4 12,5 12,5 15,0 4,5 5,5 5,0 6,0 2,50 3,00 16 20 2,3 2,8 1) See also annex C for control of head sizes. 2) Not applicable to scant shank bolts. 3) Subject to a tolerance of 0,2 mm. 9 SANS1143:2008Edition 2.1Table 3 90 Co
41、untersunk-head slotted bolts Dimensions in millimetresDimensions in millimetres1 2 3 4 5 6 7 9 10 Shank diameter Width of slot Depth of slotMaximum theoretical diameter, sharpMinimum head diameter d2)B E Maximum length of slot Maximum radius Nominal size of bolt Nominal thread pitch A D1)Min. Max. M
42、in. Max. Min. Max. F r M10 M12 M16 1,50 1,75 2,00 20 24 32 17,0 20,4 27,2 9,4211,3015,3010,5812,7016,702,2 3,0 3,7 2,5 3,3 4,0 2,2 3,0 3,7 2,5 3,3 4,0 9,0 10,5 14,0 0,8 1,3 1,3 M20 M24 2,50 3,00 40 48 34,0 40,8 19,1623,1620,8424,844,5 6,0 4,8 6,3 4,5 6,0 4,8 6,3 17,5 21,0 1,8 1,8 1) See also annex C
43、. 2) Not applicable to scant shank bolts. 10SANS 1143:2008 Edition 2.1Table 4 90 Countersunk-head square-neck bolts Dimensions in millimetresDimensions in millimetres1 2 3 4 5 6 7 8 9 Shank diameter Thickness of neck Width of neck Maximum theoretical diameter, sharpMinimum head diameter d2)B EMaximu
44、m radius Nominal size of bolt Nominal thread pitch A D1)Min. Max. Min. Max. Min. Max. r r1M10 M12 M16 1,50 1,75 2,00 20 24 32 17,0 20,4 27,2 9,42 11,3015,3010,5812,7016,706,0 7,2 9,6 7,5 9,0 12,0 9,42 11,3015,3010,5812,7016,700,8 1,3 1,3 1,5 1,8 2,4 M20 M24 2,50 3,00 40 48 34,0 40,8 19,1623,1620,842
45、4,8412,0 14,4 15,0 18,0 19,1623,1620,8424,841,8 1,8 3,0 3,0 1) See also annex C. 2) Not applicable to scant shank bolts. 11 SANS 1143:2008 Edition 2.1Table 5 120 Countersunk-head square-neck bolts Dimensions in millimetresDimensions in millimetres1 2 3 4 5 6 7 8 9 Head diameter Shank diameter Thickn
46、ess of neck Width of neck Maximum theoretical diameter, sharp D1)d2)B E Maximum radius Nominal size of bolt Nominal thread pitch A Min. Max. Min. Max. Min. Max. Min. Max. r r1M6 M8 M10 1,00 1,25 1,50 15 20 25 12,6 16,8 21,0 13,8 18,4 23,0 5,52 7,42 9,426,48 8,58 10,586,4 8,5 10,6 7,9 10,5 13,15,52 7
47、,42 9,426,48 8,58 10,580,4 0,8 0,8 0,9 1,2 1,5 M12 M16 M20 1,75 2,00 2,50 30 40 50 25,2 34,4 43,0 27,6 36,8 46,0 11,30 15,30 19,1612,70 16,70 20,8412,8 17,0 21,3 15,8 21,0 26,311,30 15,30 19,1612,70 16,70 20,841,3 1,3 1,8 1,8 2,4 3,0 1) See also annex C. 2) Not applicable to scant shank bolts. 12SAN
48、S 1143:2008 Edition 2.1Table 6 Nominal lengths of bolts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Nominal length1)mm Type of bolt Nominal size 20 25 30 35 40 45 50 55 60 65 70 75 80 90 100 115 120 125 140 150 160 165 180 200 230 240Mushroom-head nib M10 M12 M16 M20 M24 As specified by the purchaser 90 Countersunk-head nib M10 M12 M16 M20 M24 NP P NP NP P NP NPNPNP P P P P P NPNP P P P NPNPNP NPNPNP P P P P P P P P NPNPNP NP P P NPNP NPNP
