1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. AUGUST 2008 Page 1 of 10 NAVISTAR, INC. Engineering Standard Parts NUMBER: ESP-BM-
2、1.101-GS TITLE: Hex Head Bolts Metric Series -General Specifications (Noun Code 0810) CURRENT ISSUE DATE: August 2008 WRITTEN/REVIEWED BY: Corporate Technical Standards APPROVED BY: Corporate Technical Standards SUPERSEDES ISSUE OF: August 2006 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CU
3、RRENT REVISION Change Notice: Preferred parts policy revised to indicate that the material for all sizes is to be Class 10.9; it was previously Class 8.8 for sizes M6 and M8. International Truck and Engine Corporation replaced with Navistar, Inc. per corporate direction. GENERAL: This specification
4、contains the essentials of the following standards: International Organization for Standardization: ISO/4014 American National Standards Institute: ANSI B18.2.3.1M German Institute of Standards: DIN 931 For M10, M12 and M14 sizes, across flats, across corners and head height dimensions on page 9, re
5、flect the latest ISO/TC2 decisions. Many bolts presently being manufactured and used, will be to the old ISO dimensions (1 mm larger across flats). It is recommended that locations, such as European operations sourcing to old ISO dimensions, continue to do so until a complete and cost effective tran
6、sition to the new dimensions is accomplished. Locations sourcing to the new ANSI/ISO dimensions (as stated in this standard), are urged to monitor stock and procurement practices to assure consistent production availability of the latest bolts. For M22 size, dimensions across flats and corners are s
7、hown per latest ISO/TC2 decisions. The previous width across flats and corners, which are shaded in gray, will be deleted from the standard on its next issue. Letter symbols designating dimensional characteristics are in accord with those used in ANSI and ISO standards. PREFERRED PARTS POLICY: Prefe
8、rred parts are so designated to reduce variety of parts and assure maximum availability, interchangeability and cost savings. Material: Class 10.9 (all sizes) Finishes: Phosphate Coating (PHC) Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo repr
9、oduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-1.101-GS TITLE: Hex Head Bolts Metric Series General Specifications CURRENT ISSUE DATE: August 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Tech
10、nical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. AUGUST 2008 Page 2 of 10 Nominal Size and Length Incrementation: Lengths mm Nominal Diameters Dimensions in millimeters: M6 M8 M10 M12 M16 M20 M24 M30 M36 12 x x 16 x x 20 x x x 25 x x x x 30 x x x x x 35
11、x x x x x x 40 x x x x x x 45 x x x x x x 50 x x x x x x x 60 x x x x x x x x 70 x x x x x x x x x 80 x x x x x x x x x 90 x x x x x x x x x 100 x x x x x x x x 110 x x x x x x x x 120 x x x x x x x 130 x x x x x x x 140 x x x x x x x 150 x x x x x x x 160 x x x x x x 180 x x x x x x 2 mm Increments
12、 Under 12 mm 20 mm Increments Over 180 mm HEAD: The top of the head will be full form and chamfered or rounded. The diameter of the chamfer circle or the start of rounding will be equal to the maximum width across flats within a tolerance of minus 15 percent. CORNER FILL: The rounding due to lack of
13、 fill at the six corners of the head will be reasonably uniform. TRUE POSITION OF HEAD: The axis of the hex head will be located at true position with respect to the axis of he bolt (determined over a distance under the head equal to one bolt diameter) within a tolerance zone of diameter specified b
14、elow. Dimensions in millimeters. Nominal Sizes M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 Total Runout 0.44 0.56 0.70 0.84 0.98 1.12 1.40 1.68 2.10 2.52 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without lice
15、nse from IHS-,-,-NUMBER: ESP-BM-1.101-GS TITLE: Hex Head Bolts Metric Series General Specifications CURRENT ISSUE DATE: August 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to as
16、sume all patent liability. 2008 by Navistar, Inc. AUGUST 2008 Page 3 of 10 BEARING SURFACE: The bearing surface will be flat and washer faced. Diameter of bearing surface will not exceed the width across flats nor be less than the specified minimum washer face diameter. For referee purposes, measure
17、ment of bearing surface diameter will be taken at mid thickness of the washer face. The plane of the bearing surface will be perpendicular to the axis of the body within the total runout specified below. The measurement of bearing face runout will be made as close to the periphery of the washer face
18、 as possible while the bolt is held in a collet or other gripping device at a distance equal to one bolt diameter from the underside of the head. Dimensions in millimeters. Nominal Size M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M36 Total Runout 0.25 0.28 0.32 0.35 0.39 0.43 0.48 0.53 0.58 0.63 0
19、.71 0.78 0.93 FILLET: The fillet configuration at the junction of the head and shank will be as shown below, and will have limits is specified below. The fillet will be a smooth and continuous curve fairing smoothly into the underhead bearing surface and the shank within the limits specified. No rad
20、ius in the fillet contour will be less than R minimum. Dimensions in millimeters: Nominal Bolt Diameter and Thread Pitch Da Fillet Transition Diameter R Fillet Radius Max Min M6 x 1 6.8 0.25 M8 x 1.25 9.2 0.4 M10 x 1.5 11.2 0.4 M12 x 1.75 13.7 0.6 M14 x 2 15.7 0.6 M16 x 2 17.7 0.6 M18 x 2.5 20.2 0.6
21、 M20 x 2.5 22.4 0.8 M22 x 2.5 24.4 0.8 M24 x 3 26.4 0.8 M27 x 3 30.4 1.0 M30 x 3.5 33.4 1.0 M36 x 4 39.4 1.0 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-1.101-G
22、S TITLE: Hex Head Bolts Metric Series General Specifications CURRENT ISSUE DATE: August 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navi
23、star, Inc. AUGUST 2008 Page 4 of 10 BODY DIAMETER: The diameter of the body on bolts which are not threaded full length will be within the limits specified in dimensional Table. For bolts threaded full length, the diameter of the unthreaded shank under the head will not exceed the specified maximum
24、body diameter nor be less than the minimum body diameter (DS1) specified below. Minimum Body Diameter for Product Threaded to Head Dimensions in millimeters: Nominal Sizes M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 DS1 5.21 7.04 8.86 10.68 12.50 14.50 18.16 21.80 27.46 33.12 POINTS: At manufacturers opti
25、on, the end of the bolt will be chamfered from a diameter equal to or slightly less than the thread root diameter to produce a length of chamfered or incomplete thread within the limits for “Z“ shown in Table below or will have a rounded point of radius “V“ given in Table below. The end of the point
26、 will be reasonably square with the axis of bolt and, where pointed blanks are used, the slight rim or cup resulting from roll threading will be permissible. Dimensions in millimeters: Nominal Bolt Size V Z Nominal Bolt Size V Z Point Radius Point Length Point Radius Point Length Approx. Max Min App
27、rox Max Min M6 8.4 2.00 0.50 M20 28.0 5.00 1.25 M8 11.2 2.50 0.62 M22 30.8 5.00 1.25 M10 14.0 3.00 0.75 M24 33.6 6.00 1.50 M12 16.8 3.50 0.88 M27 37.8 6.00 1.50 M14 19.6 4.00 1.00 M30 42.0 7.00 1.75 M16 22.4 4.00 1.00 M36 50.4 8.00 2.00 M18 25.2 5.00 1.25 V equals 1.4 times nominal screw diameter. Z
28、 max equals 2 times thread pitch Z min equals 0.5 times thread pitch LENGTH TOLERANCE: The length of the bolt will be measured parallel to the axis of the bolt from the underhead bearing surface to the extreme end of the shank. Dimensions in millimeters: Nominal Sizes Nominal Lengths M6 thru M8 M10
29、thru M16 M18 thru M24 M27 thru M36 to 10mm 0.3 0.3 Over 10 to 18 mm 0.4 0.4 Over 18 to 30 mm 0.4 0.4 0.7 Over 30 to 50 mm 0.5 0.8 1.3 1.5 Over 50 to 80 mm 0.6 1.0 1.5 1.8 Over 80 to 120 mm 0.7 1.1 1.8 2.0 Over 120 to 180 mm 1.3 1.3 2.0 2.3 Over 180 to 240 mm 2.3 2.3 2.3 3.0 Over 240 mm 3.0 3.0 3.0 3
30、.0 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-1.101-GS TITLE: Hex Head Bolts Metric Series General Specifications CURRENT ISSUE DATE: August 2008 This document
31、 is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. AUGUST 2008 Page 5 of 10 THREADS: Thread form, diameters, and associated pitches are in accorda
32、nce with ISO Recommendations for coarse pitch series. Threads will be made to the tolerances of the medium class of fit (6g-external threads) for plain or unplated bolts as shown in ISO 965/II, General Purpose Metric Screw Threads. The threads after plating must not exceed the basic size which is th
33、e maximum material condition (minimum size) of the internal thread. REQUIREMENTS FOR DRILLED HOLES IN BODY: (Non-Preferred) Dimensions in Millimeters: D J* H M6 3 1.6 M8 3.3 2 M10 4.2 2.5 M12 5 3.2 M16 6 4 M18 6 4 M20 6.5 4 M22 6.5 4 M24 8.5 5 * Drilled holes are to be located from under the head a
34、distance equal to nominal L minus J. THREAD LENGTH: The length of thread on bolts will be controlled by the maximum grip gaging length (Lg) and the minimum body length (Ls) as set forth below. Grip gaging length, Lg max, is the distance measured parallel to the axis of the bolt, from the underhead b
35、earing surface to the face of a noncounterbored or noncountersunk standard GO thread ring gage assembled by hand as far as the thread will permit. For standard diameter-length combinations of bolts, the values for Lg max are specified below. For diameter-length combinations not listed below, the max
36、imum grip gaging length, as calculated and rounded to one decimal place, will be equal to the nominal bolt length, L, minus the basic thread length, B, as specified on page 9 (Lg max = L - B). Lg max will be used as a criterion for inspection. Body length, Ls min, is the distance, measured parallel
37、to the axis of the bolt, from the underhead bearing surface to the last scratch of thread or top of the extrusion angle, whichever is closest to the head. For standard diameter-length combinations of bolts, the values of Ls min are specified below. For diameter-length combinations not listed below,
38、the minimum body length, as calculated and rounded to Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-1.101-GS TITLE: Hex Head Bolts Metric Series General Specifica
39、tions CURRENT ISSUE DATE: August 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. AUGUST 2008 Page 6 of 10 one decimal place,
40、will be equal to the maximum grip gaging length as computed minus the maximum transition thread length as specified below (Ls min = Lg max X max). Ls min will be used as a criterion for inspection. Bolts of nominal lengths which have a calculated Ls min value equal to or less than the length will be
41、 threaded full length. For bolts (conforming to ANSI B-18.2.3.1M) which are threaded full length, the distance from the under head bearing surface to the face of a non-counterbored or non-countersunk standard GO thread ring gage assembled by hand as far as the thread will permit will not exceed the
42、length, Lu, as specified in table below for thread lengths. Basic thread length, B, as specified on page 9 is a reference dimension intended for calculation purposes only, and is the distance, measured parallel to the axis of the bolt, from the extreme end of the bolt to the last complete (full form
43、) thread. Transition thread length, X max, as specified on page 9 is a reference dimension intended for calculation purposes only. It includes the length of incomplete threads and tolerances on grip gaging length and body length. The transition from full thread to incomplete thread will be smooth an
44、d uniform. The major diameter of the incomplete thread will not exceed the actual major diameter of the complete (full form) threads. For bolts (conforming to ANSI B-18.2.3.1M) of property class 10.9 and higher strength materials (tensile strength 1040 MPa and higher), the transition threads will ha
45、ve a rounded root contour no radius of which will be less than the specified minimum radius at the root of the full form thread. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NU
46、MBER: ESP-BM-1.101-GS TITLE: Hex Head Bolts Metric Series General Specifications CURRENT ISSUE DATE: August 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent lia
47、bility. 2008 by Navistar, Inc. AUGUST 2008 Page 7 of 10 Maximum Grip Gaging Lengths (Lg) and Minimum Body Lengths (Ls) Dimensions in millimeters: Nom Dia & Thd Pitch M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M14 x 2 M16 x 2 M20 x 2.5 M24 x 3 M30 x 3.5 M36 x 4 L Nom Length Lg Max Ls Min Lg Max Ls Min Lg
48、Max Ls Min Lg Max Ls Min Lg Max Ls Min Lg Max Ls Min Lg Max Ls Min Lg M ax Ls Min Lg Max Ls Min Lg Max Ls Min 8 10 12 14 16 20 25 30 12.0 7.0 35 17.0 12.0 13.0 6.8 40 22.0 17.0 18.0 11.8 14.0 6.5 45 27.0 22.0 23.0 16.8 19.0 11.5 15.0 6.2 50 32.0 27.0 28.0 21.8 24.0 16.5 20.0 11.2 16.0 6.0 55 60 37.0 42.0 32.0 37.0 33.0 38.0 26.8 31.8 29.0 34.0 21.5 26.5 25.0 30.0 16.2 21.2 21.0 26.0 11.0 16.0 17.0 22.0 7.0 12.0 65 43.0 36.8 39.0 31.5 35.0 26.2 31.0 21.0 27.0 17.0 19.0 6.5 70 48.0 41.8 44.0 36.5 40.0 31.2 36.0 26.0 32.0 22.0 24
