Table 1: Nondestructive

Chracteristics Inspection Level Internally Threaded Extermally Threaded Length 1 Shank diameter (body or shoulder) C NA WA 2 Shank length B NA WA 3 Grip length B NA WA 4 Total thread length B NA WA 5 Concentricity of shank to thread or pitch diameter B NA WA 6 Length - overall B WA WA Heads 7 Width across flats B WA WA 8 Width across conners C WA WA 9 Head height or nut thickness C WA WA 10 Wrenching height C WA WA 11 Head diameter C NA WA 12 Flange diameter C WA WA 13 Flange thickness C WA WA 14 Flange flatness C WA WA 15 Head and/or flange location C WA WA 16 Chamfer or radius, top or button of head A NA WA Bearing/head to shank/runout/protrusion 17 Location between thread and shank C NA WA 18 Location between head and shank B NA WA 19 Bearing surface diameter (washer face diameter) C WA WA 20 Bearing surface (washer face) thickness C WA WA 21 Angularity of bearing surface C NA WA 22 Diametr of undercut B NA WA 23 Depth of undercut C NA WA 24 Width of undercut C NA WA 25 Radius or fillet underhead C WA WA 26 Underhead fillet transition diameter B NA WA 27 Underhead fillet transition length B NA WA 28 Shoulder chamfer B NA WA 29 Thread neck fillet B NA WA 30 Head countersunk angle C NA WA 31 Head axis of the conical bearin C NA WA   surface/parallel to the axis of the body       32 Head protrusion/flushness A NA WA Point 33 Point diameter C NA WA 34 point length C NA WA 35 Dog point diameter C NA WA 36 Dog point length C NA WA 37 Dog point concentricity C NA WA 38 Oval point radius C NA WA 39 Angles - all poing - all set screw configuration C NA WA Drive/Cross Drill 40 Recess or socket depth penetration B NA WA 41 Angle, botton of socket C NA WA 42 Wall thickness B NA WA 43 Location of recess C NA WA 44 Location of hole or socket C WA NA 45 Socket or hole size C NA WA 46 Countersink diameter and depth C WA NA 47 Angularity of tapping by tapping screws C WA NA

Table 1: Nondestructive (Continued)

Chracteristics Inspection Level Internally Threaded Extermally Threaded 48 Slot wigth C WA WA 49 Slot depth B WA WA 50 Slot alignments and location C WA WA 51 Cross drilled holes - location C NA WA 52 Cross drilled holes - diameter B NA WA 53 Cross drilled holes - chamfers or burrs C NA WA 54 Cross drilled holes - hole alignment B NA WA Bearing/head to shank/runout/protrusion 55 Type of washer(s) C WA WA 56 Washer outside diameter C WA WA 57 Washer inside diameter C WA WA 58 Washer thickness C WA WA Other   59 Thread accepability C WA WA 60 Visual inspection A WA WA 61 Straightness C NA WA

Legend: NA - not applicable WA - when applicable

Table 2: Destructive

Chracteristics Inspection Level Internally Threaded Parts Extermally Threaded Parts 1 2 3 Proof load - externally threaded Proof load - internally threaded Tensile strength (wedge or axial) C B B NA WA NA WA NA WA 4 5 6 Hardness Case depth Decarburization A B C WA NA WA WA WA WA 7 8 9 10 Torsional strength Drive test Prevailing-torque Washer hardness B B B B NA NA WA NA WA WA WA WA 11 12 13 14 Ductility Plating thickness Corrosion resistance Hydrogen embrittlement A B B A NA WA WA WA WA WA WA WA

Legend: NA - not applicable WA - w hen applicable

Table 3: Sample Size

Lot Size Level of Inspection Nondestructive Testing Destructtive Testing sample size Acceptance Number Sample Size Acceptance Number Up to 250,000 Maximum A 100 2 8 0 B 32 1 4 0 C 8 0 1 0

Notes: (1) Quench cracking observed in a single pieces renders the lot subject to rejection. (2) Where sample size exceeds lot size, 100% inspected to be applied.