DEFSTAN 02-862(PT4)/2(2007) : 2007

Foreword
1 Scope
2 Warning
3 Normative References
4 Definitions
5 Performance Specification
  5.1 Materials
      5.1.1 Fastener Material
      5.1.2 Zinc Plating
      5.1.3 Phosphate Coating
  5.2 Manufacture
      5.2.1 Method of Manufacture
      5.2.2 Fastener Dimensions and Tolerances
      5.2.3 Thread Form (Metric Fasteners)
      5.2.4 Thread Form (Unified Fasteners)
6 Requirements
  6.1 Testing and Acceptance Standards for First Level
      Fasteners
      6.1.1 Product Analysis
      6.1.2 Recording of Test Results
      6.1.3 Surface Examination of Bar Stock
      6.1.4 Sub-Surface Examination of Bar Stock
      6.1.5 Heat treatment
      6.1.6 Mechanical Testing
      6.1.7 Sample Sizes for Mechanical Test Programmes
      6.1.8 Mechanical Test Programme for Externally
             Threaded Fasteners
      6.1.9 Mechanical Test Programme for Nuts
      6.1.10 Surface Examination of Fasteners
      6.1.11 Surface Roughness Measurement
      6.1.12 Thread Tolerances
      6.1.13 Dimensional Accuracy.
      6.1.14 Disposal of Rejected Fasteners
  6.2 Identification and Packaging
  6.3 Quality Assurance
      6.3.1 Documentation
      6.3.2 Certificate of Conformity
      6.3.3 Records
Annex A Procurement Check List
Annex B Acceptance Standards
  B.1 Acceptance Standards for the Surface of Finished First
      Level Fasteners in the Unplated Condition

Specifies the requirements for the manufacture, testing, identification and packaging, and quality assurance documentation for metric and unified threaded steel bolts, screws, studs, studbolts and nuts (including prevailing-torque type nuts for SM1-M and SM1-U grades only) for Submarine First Level Quality Assured applications as defined in SSP 25.