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. APRIL 2008 Page 1 of 10 NAVISTAR, INC. Engineering Standard Parts NUMBER: ESP-BM-3
2、.101-GS TITLE Heavy Hex Flange Head Bolts Metric Series General Specifications (Noun Code 0810) CURRENT ISSUE DATE: April 2008 WRITTEN/REVIEWED BY: Corporate Technical Standards APPROVED BY: Corporate Technical StandardsSUPERSEDES ISSUE OF: August 2006PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED
3、 FOR CURRENT REVISION Change Notice: Replaced International Truck and Engine Corporation with Navistar, Inc. per corporate directive. Updated per ASME B18.2.3.9M-2001. GENERAL: This specification is based on and contains elements of the following standards: International Organization for Standardiza
4、tion: ISO 68, 261, 262, 888, 898/1, 965/1 and 965/2 American National Standard: ANSI B-18.2.3.9M - 2001 (Heavy Hex dimensions) PREFERRED PARTS POLICY: Preferred parts are so designated to reduce variety of parts and assure maximum availability, interchangeability, and cost savings. Material: Steel,
5、Class 10.9 Finish: Phosphate Coating (PHC) Length Incrementation: Dimensions in millimeters: Length in mm M5 M6 M8 M10 M12 M16 M20 Length in mmM5 M6 M8 M10 M12 M16 M2010 X X 60 X X X X X X X 12 X X X 70 X X X X X X X 14 X X X 80 X X X X X X 16 X X X X 90 X X X X X X 20 X X X X X 100 X X X X X 25 X X
6、 X X X 110 X X X X X 30 X X X X X X 120 X X X X 35 X X X X X X 130 X X 40 X X X X X X X 140 X X 45 X X X X X X X 150 X X 50 X X X X X X X 160 X X HEADS: The top of head will be either full form or indented at manufacturers option, and will be chamfered or rounded. The diameter of the chamfer circle
7、or start of rounding shall be equal to the maximum width across flats, S maximum, within a tolerance of minus 15 percent. If the top of the head is indented, the periphery may be rounded. The head height, K, is the distance, parallel to the axis of the screw, from the plane of the bearing circle to
8、the top of the head, not including any raised markings. The wrenching height, KW, is the distance at a corner of the hexagon, from the junction of hex head with the flange to the last plane of full-formed hexagon (i.e., the plane closest to the top of head at which the width across corners, E, of th
9、e hexagon is within its specified limits). The corner fill rounding due to lack of fill at the six corners of the head will be reasonably uniform. GAGING OF HEAVY HEX FLANGE HEAD: See Table 1. The head will be gaged using two ring gages, A and B, to demonstrate the coincidental acceptability of wren
10、ching height, corner fill and width Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 20
11、08 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate across corners. Gage A will be placed over the head and will seat on the flange. Gage B will be placed on the top of head normal to the screw axis. The two gages shall not be in
12、contact. TABLE 1 GAGING OF HEAVY HEX FLANGE HEADS Dimensions in millimeters: Gage A Gage B WaInside Diameter TaThickness WbInside Diameter TbThickness Nominal Screw Diameter and Thread Pitch Max Min1Max2Min Max3Min Min M5 x 0.8 9.25 9.24 2.40 2.39 8.55 8.54 3.0 M6 x 1 11.56 11.55 2.70 2.69 10.79 10.
13、78 3.0 M8 x 1.25 15.02 15.01 3.60 3.59 14.07 14.06 4.0 M10 x 1.5 17.33 17.32 4.60 4.59 16.31 16.30 4.0 M12 x 1.75 20.79 20.78 5.20 5.19 19.67 19.66 5.0 M14 x 2 24.26 24.25 6.30 6.29 22.57 22.56 5.0 M16 x 2 27.72 27.71 7.10 7.09 25.93 25.92 6.0 M20 x 2.5 34.65 34.64 8.80 8.79 32.65 32.64 6.0 POSITION
14、 OF HEAD: At maximum material condition, the axis of the hexagon of the head shall be within a positional tolerance zone of the diameter specified in Table 2 with respect to the axis of the shank over a distance under the head equal to the nominal screw diameter, D. The datum shall be a close to the
15、 head as practicable, but within 0.5D from the head, and shall be either wholly plain body or wholly the thread pitch diameter, not including the thread runout or the underhead fillet. Dimensions in millimeters: TABLE 2 TOLERANCE ZONES Nominal Screw Diameter and Thread Pitch M5 0.8 M6 1 M8 1.25 M10
16、1.5 M12 1.75 M14 2 M16 2 M20 2.5 Position of Head-to-Shank Tolerance Zone Diameter at MMC 0.44 0.44 0.54 0.54 0.54 0.66 0.66 0.66 Circular Runout of Bearing Circle to Shank FIM 40.17 0.21 0.27 0.34 0.42 0.48 0.56 0.70 FLANGE: The top surface of the flange will be conical or slightly rounded (convex)
17、. Radius, R2, applies both at the corners and at the flats of the hexagon. The contour of edge at flange periphery, between the maximum flange diameter, DCmaximum, and the minimum bearing circle diameter, DW1Wamin. equals theoretical maximum width across corners, E max. 2Tamax. equals minimum wrench
18、ing height, KWmin. 3Wbmax. equals minimum width across corners, E min., -0.01 mm. 4Circular runout of bearing circle to shank is based on 1 deg and the minimum bearing circle diameter, DWmin. Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 200
19、8 Page 2 of 10 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 2008 This document is r
20、estricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate minimum, shall be optional provided that the minimum flange edge thickness, C minimum, is maintained at the minimum bearing circle diameter, DWminimum. BEARING SURFACE: The bearing surface shall be c
21、onical, 0.75 0.50 deg concave from the plane formed by the bearing circle diameter. The plane formed by the bearing circle shall be perpendicular to the axis of the shank, over a length under the head equal to the nominal screw diameter, D, within the circular runout as specified in Table 2. The mea
22、surement of bearing face runout shall be made at the actual bearing circle (i.e., at the line of highest points on any radial line, e.g., by use of straight edge anvil). The datum shall be as close to the head as practical, and shall be either wholly plain body or wholly thread pitch diameter, not i
23、ncluding the thread runout or the underhead fillet. FILLET: The fillet configuration at the junction of the head and shank shall conform to either Type F, as shown in Table 3, which also specifies limits, or Type U, as shown in Table 4, which also specifies limits, at the option of the manufacturer
24、unless the fillet type is specified by the purchaser. The fillet shall be a smooth and continuous curve fairing smoothly into the underhead bearing surface and the shank within the limits specified. For Type F, no radius in the fillet contour shall be less than R1minimum specified in Table 3. TABLE
25、3 DIMENSIONS OF TYPE F5UNDERHEAD FILLETS Body Diameter, DS6Fillet Length, LfFillet Radius, R1Nominal Screw Diameter and Thread Pitch For Short7and Long Screws Max. For Short Screws Min. For Short Screws Min. For Long Screws Max. For Short Screws Max. For Short and Long Screws Min. M5 x 0.8 5.7 5.1 4
26、.36 1.4 0.7 0.2 M6 x 1 6.8 6.2 5.21 1.6 0.9 0.25 M8 x 1.25 9.2 8.3 7.04 2.1 1.1 0.4 M10 x 1.5 11.2 10.2 8.86 2.1 1.2 0.4 M12 x 1.75 13.7 12.2 10.68 2.1 1.3 0.6 M14 x 2 15.7 14.1 12.50 2.1 1.4 0.6 M16 x 2 17.7 16.5 14.50 3.2 1.6 0.6 M20 x 2.5 22.4 20.7 18.16 4.2 2.1 0.8 5Type F was formerly named Sty
27、le A. 6Values of DSfor long screws and DSmax. for short screws are specified in Table 5. 7Short screws are screws that are threaded full length. Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2008 Page 3 of 10 Copyright International Truck an
28、d Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 2008 This document is restricted and may not be sent outside Navistar,
29、 Inc. or reproduced without permission from Corporate BODY DIAMETER: The diameter of the body, DS, on screws that are not threaded full length shall be within the limits specified in Table 5, unless the purchaser specifies screws with reduced diameter body. For screws threaded full length, the diame
30、ter of the unthreaded shank under the head shall neither exceed the maximum body diameter, DSmaximum, specified in Table 5 nor be less than the minimum body diameter, DSminimum, specified in Table 3 or 4. Screws of nominal lengths equal to or greater than the shortest nominal lengths specified in Ta
31、ble 6 may be obtained with reduced diameter body, if so specified. Where reduced diameter body (or “Type R”) is specified, the body diameter, D2, shall be within the limits specified in Table 6. The screw shall have a shoulder under the head. The diameter, DS, and length, L2, of the shoulder shall b
32、e as specified in Table 6. TABLE 4 DIMENSIONS OF TYPE U8UNDERHEAD FILLETS Dimensions in millimeters: Undercut Radius, R3Undercut Depth, V Nominal Screw Diameter and Thread Pitch Undercut Diameter9, DaMax. Fillet Diameter10, DVMax. Body Diameter11for Short Screws12, DSMin. Fillet Length, LfMax. Max.
33、Min. Max. Min. M5 x 0.8 6.2 5.5 4.36 1.4 0.25 0.10 0.15 0.05 M6 x 1 7.5 6.6 5.21 1.6 0.26 0.11 0.20 0.05 M8 x 1.25 10.0 8.8 7.04 2.1 0.36 0.16 0.25 0.10 M10 x 1.5 12.5 10.8 8.86 2.1 0.45 0.20 0.30 0.15 M12 x 1.75 15.2 12.8 10.68 2.1 0.54 0.24 0.35 0.15 M14 x 2 17.7 14.8 12.50 2.1 0.63 0.28 0.45 0.20
34、 M16 x 2 20.5 17.2 14.50 3.2 0.72 0.32 0.50 0.25 M20 x 2.5 25.7 21.6 18.16 4.2 0.90 0.40 0.65 0.30 8Type U was formerly named Style B. 9Dawas formerly Du. 10DVwas formerly Da. 11Values of DSfor long screws and DSmax. for short screws are specified in Table 5. 12Short screws are screws that are threa
35、ded full length. Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2008 Page 4 of 10 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without lice
36、nse from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 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
37、. 2008 by Navistar, Inc. APRIL 2008 Page 5 of 10 TABLE 5 DIMENSIONS OF HEAVY HEX FLANGE SCREWS Body Diameter, DSWidth Across Flats, S Width Across Corners, E Flange Diameter, DCBearing Circle Diameter, DWFlange Edge Thickness, C Head Height,KWrenching Height,KW Flange Top Fillet Radius, R2Nominal Sc
38、rew Diameter and Thread Pitch Max. Min. Max. Min. Max. Min. Max. Min. Min. Max. Min. Max. M5 x 0.8 5.00 4.82 8.00 7.64 9.24 8.56 11.8 9.8 1.0 5.8 2.4 0.3 M6 x 1 6.00 5.82 10.00 9.64 11.55 10.80 14.2 12.2 1.1 6.6 2.7 0.4 M8 x 1.25 8.00 7.78 13.00 12.57 15.01 14.08 18.0 15.8 1.2 8.1 3.6 0.5 M10 x 1.5
39、10.00 9.78 15.00 14.57 17.32 16.32 22.3 19.6 1.5 10.4 4.6 0.6 M12 x 1.75 12.00 11.73 18.00 17.57 20.78 19.68 26.6 23.8 1.8 11.8 5.2 0.7 M14 x 2 14.00 13.73 21.00 20.16 24.25 22.58 30.5 27.6 2.1 13.7 6.3 0.9 M16 x 2 16.00 15.73 24.00 23.16 27.71 25.94 35.0 31.9 2.4 15.4 7.1 1.0 M20 x 2.5 20.00 19.67
40、30.00 29.16 34.64 32.66 43.0 39.9 3.0 18.9 8.8 1.2 * Non-preferred POINTS: The end of the screw shall be chamfered or rounded from a diameter equal to or slightly less than the thread root diameter. The length of the point to the first full-formed thread at major diameter, as determined by the dista
41、nce the point enters into a cylindrical NOT GO major diameter ring gage, shall not exceed U maximum specified in Table 8. The end of the screw will be reasonably square with the axis of the screw, and where pointed blanks are used, the slight rim or cup resulting from roll Copyright International Tr
42、uck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 2008 This document is restricted and may not be sent outside Nav
43、istar, Inc. or reproduced without permission from Corporate threading will be permissible. At the manufacturers option, the end of the screw may have a rounded point of radius, Re, as specified in Table 8. LENGTH: The length of the screw shall be measured parallel to the axis of the screw from the p
44、lane formed by the underhead bearing circle to the extreme end of the shank. Tolerances for screw lengths are specified in Table 7. TABLE 6 DIMENSIONS OF REDUCED BODY DIAMETER (TYPE R) Dimensions in millimeters: Reduced Body Diameter, D2Shoulder13Diameter, DSShoulder Length, L2Nominal Screw Diameter
45、 and Thread Pitch Shortest Nominal Screw Length, L Max. Min. Max. Min. Max. Min. M5 x 0.8 30 4.54 4.36 5.00 4.82 3.5 2.5 M6 x 1 35 5.39 5.21 6.00 5.82 4.0 3.0 M8 x 1.25 40 7.26 7.04 8.00 7.78 5.0 4.0 M10 x 1.5 45 9.08 8.86 10.00 9.78 6.0 5.0 M12 x 1.75 50 10.95 10.68 12.00 11.73 7.0 6.0 M14 x 2 55 1
46、2.77 12.50 14.00 13.73 8.0 7.0 M16 x 2 60 14.77 14.50 16.00 15.73 9.0 8.0 M20 x 2.5 70 18.49 18.16 20.00 19.67 11.0 10.0 TABLE 7 LENGTH TOLERANCES Nominal Length, mmLength Tolerance, mmOver 6 to 10 0.29 Over 10 to 18 0.35 Over 18 to 30 0.42 Over 30 to 50 0.5 Over 50 to 80 0.6 Over 80 to 120 0.7 Over
47、 120 to 180 0.8 Over 180 to 250 0.925 Over 250 to 300 1.05 13Shoulder is mandatory. Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2008 Page 6 of 10 Copyright International Truck and Engine Corporation Provided by IHS under license with INTER
48、NNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-BM-3.101-GS TITLE: Heavy Hex Flange Head Bolts CURRENT ISSUE DATE: April 2008 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technic
49、al Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2008 Page 7 of 10 TABLE 8 DIMENSIONS OF POINTS Nominal Screw Diameter and Thread Pitch Approximate Point Radius, Re, in mm14Max. Point Length, U, in mm15M5 x 0.8 7.0 1.60 M6 x 1 8.4 2.00 M8 x 1.25 11.2 2.50 M10 x 1.5 14.0 3.00 M1
