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 Navistar, Inc. JUNE 2015 Page 1 of 3 NAVISTAR, INC. Material, Parts, and Process Specifications (MPA
2、PS) NUMBER: MPAPS S-B-7.201-GS/PL Former Designation: ESP-B-7.201-GS TITLE: Type AA Hexagon Lock Bolts English Series- Not Recommended (Noun Code 0810) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-B-7.201-GS - March
3、 2002 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 responsible to consult appropriate s
4、afety and health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, NR. 1.0 GENERAL: The Type AA Hex Lock Bolts covered in this standard conform in most respects with the Hexagon Bolts on MPAPS S-B-1.101-GS/PL, exc
5、ept for the recess in the top of the head and the undercut on bearing face. They are intended for use in applications where greater elastic deflection of head is desirable. To achieve full effectiveness however, they must bear against a hard surface. It should be noted that the word “Lock“ appearing
6、 in the names of the products in this standard is a generic term historically associated with their identification and is not intended to imply an indefinite permanency of fixity in attachments where they are used. 2.0 RESTRICTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product supplied t
7、o the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 RECESS: To assure adequate strength and proper performance the slotted recess in the top of head and the undercut in the bearing surface shall be cold or hot forged. For larger sizes, see
8、following: NOT RECOMMENDED FOR NEW DESIGN NUMBER: MPAPS S-B-7.201-GS/PL TITLE: Type AA Hexagon Lock 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 pa
9、tent liability. 2015 Navistar, Inc. JUNE 2015 Page 2 of 3 Dimensions in inches: Nominal Size 1/4 5/16 3/8 7/16 1/2 9/16 E Head Thickness, Nominal Head Thickness, Maximum Head Thickness, Minimum .125 .135 .125 .188 .198 .188 .250 .260 .250 .281 .291 .281 .312 .327 .312 .375 .390 .375 J Undercut Diame
10、ter, Minimum Undercut Diameter, Maximum .307 .317 .386 .396 .464 .474 .526 .536 .620 .630 .683 .693 K Undercut Depth, Minimum Undercut Depth, Maximum .004 .007 .010 .013 .010 .013 .010 .013 .010 .013 .010 .013 M Recess Diameter, Minimum Recess Diameter, Maximum .146 .166 .188 .208 .230 .250 .268 .28
11、8 .312 .332 .354 .374 N Checking Height, Maximum Checking Height, Minimum .110 .090 .145 .125 .185 .165 .205 .185 .220 .200 .260 .240 R Radius of Slot, Maximum Radius of Slot, Minimum .024 .016 .024 .016 .031 .016 .031 .016 .031 .016 .031 .016 Rl Radius, Maximum Radius, Minimum .031 .016 .031 .016 .
12、031 .016 .031 .016 .031 .016 .031 .016 R2 Radius, Maximum Radius, Minimum 2.00 1.50 2.00 1.50 2.00 1.50 2.00 1.50 2.00 1.50 2.00 1.50 Dimensions in inches: All dimensions except those listed below are the same as Hexagon Head Bolts on MPAPS S-B-1.101-GS/PL Nominal Size 5/8 3/4 7/8 1 1-1/8 1-1/4 E He
13、ad Thickness, Nominal Head Thickness, Maximum Head Thickness, Minimum .375 .390 .375 .438 .458 .438 .500 .520 .500 .562 .582 .562 .625 .635 .615 .687 .697 .677 J Undercut Diameter, Minimum Undercut Diameter, Maximum .740 .750 .865 .875 .990 1.000 1.115 1.125 1.245 1.255 1.370 1.380 K Undercut Depth,
14、 Minimum Undercut Depth, Maximum .010 .013 .010 .013 .010 .013 .010 .013 .010 .013 .010 .013 M Recess Diameter, Minimum Recess Diameter, Maximum .396 .416 .480 .500 .564 .584 .646 .666 .730 .750 .814 .834 N Checking Height, Maximum Checking Height, Minimum .290 .270 .335 .315 .390 .370 .455 .435 .52
15、5 .505 .590 .570 R Radius of Slot, Maximum Radius of Slot, Minimum .047 .016 .047 .016 .047 .031 .062 .031 .062 .031 .078 .031 R1 Radius, Maximum Radius, Minimum .031 .016 .031 .016 .062 .031 .062 .031 .062 .031 .062 .031 R2 Radius, Maximum Radius, Minimum 3.50 3.00 3.88 3.38 4.62 4.12 6.88 6.38 12.
16、50 12.00 19.88 19.38 NUMBER: MPAPS S-B-7.201-GS/PL TITLE: Type AA Hexagon Lock 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
17、Navistar, Inc. JUNE 2015 Page 3 of 3 4.0 PART LIST: 4.1 Not for New Design: Use Finished Hex Head Bolts on MPAPS S-B-1.101-GS/PL Nominal Size-TPI Length Finish Material Part Number 5/16 -18 3/4 PLN 8 9409011 3/8 -16 1 1/4 PLN 8 9409030 3/8 -24 1 1/2 PLN 8 9409038 5.0 TECHNICAL INFORMATION: For furth
18、er information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/
