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. 2015 by Navistar, Inc. JUNE 2015 Page 1 of 7 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-B-10.101-GS/PL Former Designation: ESP-B-10.101-GS TITLE: Square Head Machine, Carriage, Step, Plow and Fin Neck Carriage Bolts English Series (Noun Code 0810) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUP
3、ERSEDES: ESP-B-10.101-GS - August 2006 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is res
4、ponsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP, NPP. 1.0 GENERAL: Square Head Machine Bolts, Carriage Bolts, Step Bolts, and Plow Bolts in Section B conform
5、essentially with American National Standard ANSI B 18.5. The Patent Head Bolt is peculiar to NAVISTAR and is not recognized by the American National Standards Institute. Short Square Neck Carriage Bolts are limited to lengths up to and including 1-1/2 inches. Square Neck Carriage Bolts are generally
6、 limited to lengths over 1-1/2 inches. 2.0 CONTENTS: Page General 1 Policy for Selecting Parts for New Design 2 Service Parts Substitution Policy 2 Miscellaneous Dimensions and Tolerances 3 Head Marking 4 Point 4 Threads 4 Length of Thread 4 Material and Physical Properties 4 Finish 4 Restricted Che
7、mical Substances 5 Surface Discontinuities 5 Workmanship 5 Short Square Neck Carriage Bolts: Square Neck Carriage Bolts: Technical Information 5 6 7 NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machine, Carriage, Step, Plow and Fin Neck Carriage Bolts REVISION: 1506 This document is restricted
8、and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 7 3.0 POLICY FOR SELECTING PARTS FOR NEW DESIGN: Approved parts are so designated to reduc
9、e variety of parts and assure maximum availability, interchangeability and cost savings in volume buying. For new design, parts shall be selected from “Approved“ part list only 3.1 All Except Plow Bolts Material: MPAPS F-31, Part I, Type 5 Finish: Zinc Trivalent with Sealer (ZN8F) per MPAPS G-20, Cl
10、ass 8F Phosphate Coating (PHC) per MPAPS G-1, Class B2 Nominal Sizes: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, and 1 Lengths: All Diameters - 1/4 Inch Increments thru 4 Inches 1/4 and 5/16 Diameters 1/2 Inch Increments - 4 thru 7 Inches 1 Inch Increments - Over 7 Inches 3/8 thru 1 Diameters 1/2 Inch Increment
11、s - 4 thru 9 Inches 1 Inch Increments - Over 9 Inches All preferred lengths beyond the 7 and 9 inch ranges indicated above will be carried in the “Not for New Design” section because of limited usage. 3.2 Plow Bolts Head Style: #3 Material: MPAPS F-31, Part I, Type 8 Finish: Zinc Trivalent with Seal
12、er (ZN8F) per MPAPS G-20, Class 8F Nominal Sizes: 5/16, 3/8, 7/16, 1/2, and 5/8 Lengths: Same as above 4.0 SERVICE PARTS SUBSTITUTION POLICY: In the event that engineering does not indicate a “Do not substitute“ in engineering specifications, the following substitutions may be implemented in service
13、. This policy is the result of proposal circulated April 20, 1981, and subsequently approved by engineering departments worldwide. 4.1 Short and Regular Neck Carriage Bolts: To be Replaced Service Replacement MPAPS F-31, Part I, Type 1, material with Plain (PLN), Phosphate Coated (PHC) or Zinc with
14、Chromate (ZN8F) finishes. MPAPS F-31, Part I, Type 5 material with Zinc Trivalent with Sealer (ZN8F) finish or MPAPS F-31, Part I, Type 1 material with Zinc Trivalent with Sealer (ZN8F) finish (if type 5 material is not set up for service). MPAPS F-31, Part I, Type 5 material with Plain (PLN) finish
15、 MPAPS F-31, Part I, Type 5 material with Zinc Trivalent with Sealer (ZN8F) finish. NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machine, Carriage, Step, Plow and Fin Neck Carriage Bolts REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without
16、permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 3 of 7 4.2 Plow Bolts To Be Replaced Service Replacement MPAPS F-31, Part I, Type 1 material with Plain (PLN) finish. MPAPS F-31, Part I, Type 1 material with Z
17、inc Trivalent with Sealer (ZN8F) finish or MPAPS F-31, Part I, Type 8 material with Zinc Trivalent with Sealer (ZN8F) finish if set for service. MPAPS F-31, Part I, Type 5 material with Plain (PLN) finish. MPAPS F-31, Part I, Type 8 material with Zinc Trivalent with Sealer (ZN8F) finish. MPAPS F-31,
18、 Part I, Type 8 material with plain (PLN) finish. MPAPS F-31, Part I, Type 8 material with Zinc Trivalent with Sealer (ZN8F) finish. 5.0 MISCELLANEOUS DIMENSIONS AND TOLERANCES: 5.1 Head Periphery: Because the heads on these products normally are not machined or trimmed, the circumference may be som
19、ewhat irregular and the edge may be rounded or flat. 5.2 Swell of Fin: A swell or fin under the head or under corners of square neck will be permissible providing it does not affect serviceability, nor exceed the basic bolt diameter by more than the following: .030 inch for sizes up to and including
20、 1/2 inch. .050 inch for sizes over 1/2 to 3/4 inches, inclusive. .063 inch for sizes over 3/4 to 1-1/4 inches, inclusive. .093 inch for sizes over 1-1/4 inches. 5.3 Tolerance on Length (Except Plow Bolts): Nominal Bolt Sizes 1/4 thru 3/8 7/16 and 1/2 9/16 thru 3/4 7/8 and 1 Nominal Bolt Length Tole
21、rance on Length Up to 1 inch, incl +.02 +.02 +.02 - -.03 -.03 -.03 - Over 1 inch to 2-1/2 inches, incl. +.02 +.04 +.06 +.08 -.04 -.06 -.08 -.10 Over 2-1/2 inches to 4 inches, incl. +.04 +.06 +.08 +.10 -.06 -.08 -.10 -.14 Over 4 inches to 6 inches, incl. +.06 +.08 +.10 +.12 -.10 -.10 -.10 -.16 Over 6
22、 Inches +.10 +.12 +.14 +.16 -.18 -.18 -.18 -.20 5.4 Tolerance on Length - Plow Bolts (6 Inches and Under): Sizes 1/4 to 3/8 incl Sizes 7/16 to 1/2 incl Sizes 5/8 to 1 Inch .031 .062 .125 Bolts over 6 inches will have a length tolerance of .187. NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machi
23、ne, Carriage, Step, Plow and Fin Neck Carriage Bolts REVISION: 1506 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. 2015 by Navistar, Inc. JUNE 2015 Page
24、 4 of 7 5.5 Full Diameter Body: All bolts covered by this standard will be furnished with full diameter body of limits given in the dimensional tables. 5.6 Straightness: The shanks of bolts will be straight within the limitations tabulated below: Nominal Bolt Length Allowable Camber Per Inch of bolt
25、 Length Max Up to 12 Inches, incl. .006 Over 12 to 24 inches, incl .008 The length of any permissible swell on the body under head or neck of bolts will be excluded from checks for straightness. A suggested gage and gaging procedure for checking straightness are shown in MPAPS S-B-1.101-GS/PL. 6.0 H
26、EAD MARKING: Bolts will have legible, raised radial head markings to indicate bolt type (see A-31, Part I), and a manufacturers identification symbol recognizable in the trade to indicate source. Marking symbols on the heads for bolt sizes 5/8 inch and smaller will project not less than .005 inch ab
27、ove the surface nor more than .015 inch over the specified maximum head height; and for bolt sizes larger than 5/8 inch will project not less than the equivalent in inches of .0075 times the basic bolt diameter above the surface nor more than .030 inch over the specified maximum head height. 7.0 POI
28、NT: None of the bolts covered by this specification are pointed. Bolts will be sheared, with the first thread incomplete. 8.0 THREADS: Threads will be Unified Coarse (UNC), Class 2A. 9.0 LENGTH OF THREAD: The length of thread will be measured, parallel to the axis of bolt, from the end of bolt to th
29、e last complete (full form) thread. For bolts other than plow or short neck carriage bolts, the minimum length of thread will be equal to twice the basic bolt diameter plus .25 inch for nominal bolt lengths of 6 inches or shorter, and twice the basic bolt diameter plus .50 inch for longer nominal le
30、ngths. Bolts of nominal length too short to accommodate the minimum thread lengths will have full form threads extending as close to the head or neck as practicable. 10.0 MATERIAL AND PHYSICAL PROPERTIES: Types 1, 5 and 8 as indicated by part number and in accordance with MPAPS F-31, Part I. Stainle
31、ss Steel (SST) will be 18-8 designation per MPAPS A-37. 11.0 FINISHES: As designated by part number, bolts will be furnished plain, plated or coated in accordance with the MPAPS and class listed below. Phosphate Coating (PHC) MPAPS G-1, Class B2. Zinc Trivalent with Sealer (ZN8F) 24 threads per inch
32、 and coarser, MPAPS G-20, Class 8F. Chromium Bright (CRB) 12 threads per inch and coarser, MPAPS G-19, Class 8. 24 to 13 threads per inch, G-19, MPAPS Class 5. NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machine, Carriage, Step, Plow and Fin Neck Carriage Bolts REVISION: 1506 This document is
33、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. 2015 by Navistar, Inc. JUNE 2015 Page 5 of 7 12.0 RESTRICTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product s
34、upplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 13.0 SURFACE DISCONTINUITIES: Per MPAPS F-31, for types 5 and 8. 14.0 WORKMANSHIP: Type 1 bolts will not contain an excess of surface imperfections which might affect their serviceabi
35、lity, such as burrs, seams, laps, loose scale and other irregularities. 15.0 SHORT SQUARE NECK CARRIAGE BOLTS: A N* G Cotter Pin Size 1/4 .109 .078 1/16 5/16 .125 .078 1/16 3/8 .156 .125 3/32 7/16 .156 .125 3/32 1/2 .172 .125 3/32 5/8 .188 .156 1/8 3/4 .219 .156 1/8 7/8 .250 .156 1/8 1 .250 .156 1/8
36、 Dimensions in inches: Nominal Size 1/4 5/16 3/8 7/16 1/2 5/8 3/4 A Maximum Body Diameter .260 .324 .388 .452 .515 .642 .768 Minimum Body Diameter .240 .302 .363 .425 .486 .611 .734 P Maximum Head Diameter .594 .719 .844 .969 1.094 1.344 1.594 Minimum Head Diameter .563 .688 .782 .907 1.032 1.219 1.
37、469 E Maximum Head Height .145 .176 .208 .239 .270 .344 .406 Minimum Head Height .125 .156 .188 .219 .250 .313 .375 J Maximum Square Width .260 .324 .388 .452 .515 .642 .768 Minimum Square Width .245 .307 .368 .431 .492 .616 .741 F Maximum Square Depth .124 .124 .156 .156 .156 .218 .218 Minimum Squa
38、re Depth .093 .093 .125 .125 .125 .187 .187 *M Maximum Width Across Corners .368 .458 .549 .639 .728 .908 1.086 S Maximum Corner Radius .031 .031 .047 .047 .047 .078 .078 R Maximum Fillet Radius .031 .031 .031 .031 .031 .062 .062 B Threads Per Inch 20 18 16 14 13 11 10 #D Maximum Pitch Dia .2164 .27
39、52 .3331 .3897 .4485 .5644 .6832 Minimum Pitch Dia (See Note 1) .2127 .2712 .3287 .3850 .4435 .5589 .6773 Basic Pitch Dia .2175 .2764 .3344 .3911 .4500 .5660 .6850 Minimum Thread Length To Head To Head To Head To Head To Head To Head To Head *Based on theoretical sharp corners of maximum square. *Dr
40、illed holes to be located from under the head a distance equal to nominal C minus N. # For statement on thread length, see section 9.0. NOTES: 1. The maximum and minimum pitch diameter limits apply to plain finish bolts and to plated or coated bolts before plating or coating. Bolts after plating or
41、coating will not exceed the basic pitch diameter. 2. For dimensions and tolerances not shown in above cuts or tables, see section 5.0. 3. Part numbers for this product are limited to bolt lengths 1-1/2 inches and shorter. NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machine, Carriage, Step, Plo
42、w and Fin Neck Carriage Bolts REVISION: 1506 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. 2015 by Navistar, Inc. JUNE 2015 Page 6 of 7 15.1 Part list:
43、 15.1.1 Approved: 15.1.2 Not for New Design: Nominal Size-TPI Length Finish Material Part Number 5/16-18 1-1/2 ZN8F 5 598805R1 3/8-16 1-1/4 ZN8F 5 550796R1 3/8-16 1-1/2 ZN8F 5 634979R1 16.0 SQUARE NECK CARRIAGE BOLTS: Dimensions in inches: Nominal Size 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 A Maximum B
44、ody Diameter .260 .324 .388 .452 .515 .642 .768 .895 1.022 Minimum Body Diameter .237 .298 .360 .421 .483 .605 .729 .852 .976 P Nominal Head Diameter .563 .688 .812 .937 1.062 1.312 1.562 1.812 2.062 Maximum Head Diameter .594 .719 .844 .969 1.094 1.344 1.594 1.844 2.094 Minimum Head Diameter .563 .
45、688 .782 .907 1.032 1.219 1.469 1.719 1.969 E Nominal Head Height .125 .156 .188 .219 .250 .313 .375 .438 .500 Maximum Head Height .145 .176 .208 .239 .270 .344 .406 .469 .531 Minimum Head Height .125 .156 .188 .219 .250 .313 .375 .438 .500 J Maximum Square Width .260 .324 .388 .452 .515 .642 .768 .
46、895 1.022 Minimum Square Width .245 .307 .368 .431 .492 .616 .741 .865 .990 F Maximum Square Depth .156 .187 .219 .250 .281 .344 .406 .469 .531 Minimum Square Depth .125 .156 .188 .219 .250 .313 .375 .438 .500 R Maximum Radius .031 .031 .031 .031 .031 .062 .062 .062 .062 B Threads Per Inch 20 18 16
47、14 13 11 10 9 8 #D Maximum Pitch Dia .2164 .2752 .3331 .3897 .4485 .5644 .6832 .8009 .9168 Minimum Pitch Dia (See Note 1) .2127 .2712 .3287 .3850 .4435 .5589 .6773 .7946 .9100 Basic Pitch Dia .2175 .2764 .3344 .3911 .4500 .5660 .6850 .8028 .9188 Minimum Thread Length .75 .88 1.00 1.12 1.25 1.50 1.75
48、 2.00 2.25 Nominal Size-TPI Length Finish Material Part Number 5/16-18 3/4 ZN8F 5 598802R1 3/8-16 3/4 ZN8F 5 598809R1 3/8-16 1 ZN8F 5 495967R1 A N * G Cotter Size 1/4 .109 .078 1/16 5/16 .125 .078 1/16 3/8 .156 .125 3/32 7/16 .156 .125 3/32 1/2 .172 .125 3/32 5/8 .188 .156 1/8 3/4 .219 .156 1/8 7/8
49、.250 .156 1/8 1 .250 .156 1/8 NUMBER: MPAPS S-B-10.101-GS/PL TITLE: Square Head Machine, Carriage, Step, Plow and Fin Neck Carriage Bolts REVISION: 1506 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. 2015 by Navistar, Inc. JUNE 2015 Page 7 of 7 * Drilled holes to be located from under the head a distanc
