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 4 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-E-40.101-GS/PL Former Designation: ESP-E-40.101-GS TITLE: Hex Piloted Projection Weld Nuts English Series (Noun Code 5780) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-E-40.101-GS - March 2011
3、 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 safety
4、 and health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP. 1.0 GENERAL: Weld nuts are used as pre-positioned nuts that permit blind one-sided assembly of parts. These nuts are designed with 3 or 6 projectio
5、ns at the corners for projection welding. A pilot around the threaded hole is used to positively locate the nut when it is inserted into the hole provided in the part to which it is assembled. The pilot also minimizes the splatter of molten metal into threads during the welding operation. 2.0 RESTRI
6、CTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 POLICY FOR SELECTING PARTS FOR NEW DESIGN: Approved parts are so designated to reduce variety of parts and assure
7、 maximum availability, interchangeability, and cost savings in volume buying. For new design, parts shall be selected from “Approved“ part list only. Design: Hex, piloted 6 projections (Special Series - .035 Pilot Heights) Hex, piloted 3 projections (Standard Series - Short Pilot and Standard Series
8、 - Long Pilot) Thread: Coarse Sizes: 10, 1/4, 5/16, 3/8, 1/2, and 5/8 4.0 MISCELLANEOUS DIMENSIONS: Tops of nuts may be chamfered or rounded at corners and edges provided the flat area and degree of flatness are sufficient to provide intimate contact with the welding electrode. The axis of the threa
9、ded hole will be at right angles to the top face within 2. Pilot diameter will not be eccentric with threaded hole by more than .008“. Heights of all projections on any one nut will be within .005 inch of each other. 5.0 THREADS: Unified Series, Class 2B. 6.0 MATERIAL: Low Carbon Steel (STL) AISI 10
10、08 or 1010. NUMBER: MPAPS S-E-40.101-GS/PL TITLE: Hex Piloted Projection Weld Nuts 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 Na
11、vistar, Inc. JUNE 2015 Page 2 of 4 7.0 FINISH: Plain (PLN), 8.0 SURFACE DISCONTINUITIES: Allowable limits are defined in MPAPS F-31, Part II. In addition, nuts will be free from burrs, sharp edges, loose scale, dirt, or other contaminants which adversely affect their weldability or serviceability. 9
12、.0 QUALITY: Nuts must meet the quality requirements of MPAPS FT-9553. 10.0 SIX PROJECTION SPECIAL SERIES .035 PILOT: 10.1 Part List: 10.1.1 Approved: Dimensions in inches: Nominal Size Across Flats E D K L M Rec Hole Size in Plate Reference Weld Quality Test * Part Number Across Corners Thick-ness P
13、rojection Height Pilot Height Pilot Dia .0359 Sheet .0598 Sheet Max Min .010 .002 +.000 -.005 +.000 -.012 +.000 -.013 Torque Ft Lbs Min Pushout Load Lbs Min Torque Ft Lbs Min Pushout Load Lbs Min 10 - 24 .500 .556 .188 .015 .035 .406 .422 15 380 25 1050 257920C1 1/4 - 20 .500 .556 .188 .015 .035 .40
14、6 .422 30 490 35 1175 257924C1 5/16 - 18 .562 .624 .219 .015 .035 .469 .484 40 600 50 1250 257926C1 * 5/16 - 24 .562 .624 .219 .015 .035 .469 .484 40 600 50 1250 257927C1 3/8 - 16 .625 .691 .250 .015 .035 .531 .547 45 680 55 1325 257928C1 * 7/16 - 20 .750 .830 .312 .015 .035 .656 .672 50 740 80 1400
15、 257931C1 1/2 - 13 .812 .898 .375 .015 .035 .719 .734 50 740 80 1400 257932C1 Recommended panel thickness range: 0359“ - .0747“. * Non-Preferred. * * Reference test values are for weld process setup and control. Nuts are welded to cold rolled, bare steel, coupons in the two thicknesses shown. Minimu
16、m torque values represent torsional strength of weld when torque directly applied to nut with torque wrench. Pushout values represent axial tensile pushout loads on assembled weld nuts. SIX PROJECTION SPECIAL SERIES .035 PILOT NUMBER: MPAPS S-E-40.101-GS/PL TITLE: Hex Piloted Projection Weld Nuts RE
17、VISION: 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 Navistar, Inc. JUNE 2015 Page 3 of 4 11.0 THREE PROJECTION STANDARD SERIES SHORT PILOT:
18、 11.1 Part List: 11.1.1 Approved: Dimensions in inches: Nominal Size C E D K L M Rec Hole Size in Plate Reference Weld Quality Test* Part Number Across Flats Across Corners Thick- ness Prolec- tion Height Pilot Height Pilot Dia .042 Sheet .075 Sheet Max Min .010 .003 .005 +.000 -.012 +.000 -.013 Tor
19、que Ft Lbs Min Pushout Load Lbs Min Torque Ft Lbs Min Pushout Load Lbs Min 1/4 - 20 .500 .556 .187 .025 .040 .406 .422 20 800 25 1750 550824R1 5/16 - 18 .562 .624 .250 .025 .040 .469 .484 25 900 35 1850 550826R1 3/8 - 16 .625 .691 .250 .030 .050 .531 .547 50 1050 55 2000 550828R1 1/2 - 13 .812 .898
20、.375 .035 .060 .719 .734 100 1225 110 2150 19587R1 5/8 - 11 .937 1.05 .434 .035 .060 .781 .797 150 3250 160 3300 20291R1 11.1.2 Not for New Design: Dimensions in inches: Nominal Size C E D K L M Rec Hole Size in Plate Reference Weld Quality Test* Part Number Across Flats Across Corners Thick- ness P
21、rolec- tion Height Pilot Height Pilot Dia .042 Sheet .075 Sheet Max Min .010 .003 .005 +.000 -.012 +.000 -.013 Torque Ft Lbs Min Pushout Load Lbs Min Torque Ft Lbs Min Pushout Load Lbs Min 10 - 24 .500 .556 .187 .025 .040 .406 - - - - - 353615R1 Recommended panel thickness range: 040“ pilot for shee
22、tmetal thickness .042“ - 0747“ 050“ pilot for sheetmetal thickness .054“ - 0747“ 060“ pilot for sheetmetal thickness .067“ - 0747“ * * Reference test values are for weld process setup and control. Nuts are welded to cold rolled, bare steel, coupons in the two thicknesses shown. Minimum torque values
23、 represent torsional strength of weld when torque directly applied to nut with torque wrench. Pushout values represent axial tensile push out loads on assembled weld nuts. NUMBER: MPAPS S-E-40.101-GS/PL TITLE: Hex Piloted Projection Weld Nuts REVISION: 1506 This document is restricted and may not be
24、 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 4 of 4 12.0 THREE PROJECTION STANDARD SERIES LONG PILOT : L12.1 Part List: 12.1.1 Approved: Dimensions in inches
25、: Nominal Size C E D K L M Rec Hole Size in Plate Reference Weld Quality Test * Part Number Across Flats Across Corners Thick- ness Projec- tion Height Pilot Height Pilot Dia .090 Sheet .250 Sheet Max Min .010 .003 .005 +.000 -.012 +.000 -.013 Torque Ft Lbs Min Pushout Load Lbs Min Torque Ft Lbs Min
26、 Pushout Load Lbs Min 10 - 24 .500 .556 .187 .040 .085 .406 .422 30 2100 35 3200 350567R1 1/4 - 20 .500 .556 .187 .040 .085 .406 .422 35 2300 40 3400 550825R1 5/16 - 18 .562 .624 .218 .040 .085 .469 .484 45 2350 50 3800 550827R1 3/8 - 16 .625 .691 .250 .040 .085 .531 .547 50 2700 60 4200 350517R1 1/
27、2 - 13 .812 .898 .375 .040 .085 .719 .734 110 2750 120 5000 251040R1 Recommended panel thickness range: .0897” - .250” * Reference test values are for weld process setup and control. Nuts are welded to cold rolled, bare steel, coupons in the two thicknesses shown. Minimum torque values represent tor
28、sional strength of weld when torque directly applied to nut with torque wrench. Pushout values represent axial tensile pushout loads on assembled weld nuts. 13.0 TECHNICAL INFORMATION: For further 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:/
