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ASME B18.16.6 Prevailing Torque Locknuts (Inch Series), 2017
- CONTENTS
- FOREWORD
- ASME B18 COMMITTEE ROSTER
- CORRESPONDENCE WITH THE B18 COMMITTEE
- 1 INTRODUCTION [Go to Page]
- 1.1 Scope
- 1.2 Comparison to ISO Standards
- 2 REFERENCE STANDARDS
- 3 TERMINOLOGY
- 4 DIMENSIONS
- 5 NUT DESIGNS AND PROPERTY GRADES [Go to Page]
- 5.1 Nylon Insert Locknuts
- 5.2 All-Metal Locknuts
- 6 CORNER FILL
- 7 CHAMFERS AND BEARING CIRCLES [Go to Page]
- 7.1 Chamfer Length on Bearing Side of Nuts
- 7.2 Bearing Surface Diameter
- 8 COUNTERSINKS
- 9 THREADS
- 10 MATERIAL, MECHANICAL, AND PERFORMANCE PROPERTIES [Go to Page]
- 10.1 Material and Processes
- 10.2 Mechanical Requirements
- 10.3 Performance Requirements for Steel Locknuts
- 11 TEST METHODS [Go to Page]
- 11.1 Proof Load Test
- 11.2 Rockwell Hardness Test
- 11.3 Prevailing Torque Test
- 11.4 Optional Torque-Tension Test
- 11.5 Test Devices, Washers, Bolts, and Mandrels
- 12 GRADES AND MANUFACTURING MARKING [Go to Page]
- 12.1 Grade and Source Markings
- 12.2 Grade Marking Requirements and Options
- 12.3 Source Marking and Options
- 13 QUALITY ASSURANCE [Go to Page]
- 13.1 Dimensional Inspection Sampling
- 13.2 Performance and Mechanical Testing Sampling
- 13.3 Modification After Delivery
- 14 WORKMANSHIP
- 15 DESIGNATION [Go to Page]
- 15.1 Nylon Insert Nuts
- 15.2 All-Metal Locknuts
- Tables [Go to Page]
- Table 1 Chemical Composition Requirements
- Table 2 Hardness Requirements
- Table 3 Style NE Nylon Insert Locknut Dimensions
- Table 4 Style NTE Nylon Insert Locknut Dimensions
- Table 5 Style NU Nylon Insert Locknut Dimensions
- Table 6 Style NTU Nylon Insert Locknut Dimensions
- Table 7 Style NM Nylon Insert Locknut Dimensions
- Table 8 Style NTM Nylon Insert Locknut Dimensions
- Table 9 Dimensions of Nylon Insert Hex Flange Nuts
- Table 10 Dimensions of Prevailing Torque All-Metal Type Hex Nuts
- Table 11 Dimensions of Prevailing Torque All-Metal Type Hex Flange Nuts
- Table 12 Proof Loads, Clamp Loads, and Prevailing Torques for Coarse Thread Locknuts (Regardless of Finish)
- Table 13 Proof Loads, Clamp Loads, and Prevailing Torques for Fine Thread Locknuts (Regardless of Finish)
- Table 14 Proof Loads, Clamp Loads, and Prevailing Torques for 8-UN Series Thread Locknuts (Regardless of Finish) [Go to Page]