BGM Fastener Grade 5(B) And Grade 8(C) Hex Finish Nut Product Specifications

Steel, hardness varies by material and size

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Material

  • FF-N-836
  • SAE J995

Hardness

  • ASTM E18

Marking

  • MIL-HDBK-131 Grade 5: With indented or raised markings; 2 radial lines 120° apart, manufacturer
  • MIL-HDBK-131 Grade 8: With indented or raised markings; 2 radial lines 60° apart, manufacturer
  • MIL-HDBK-57

Dimensions

  • ASME B18.2.2 plus applicable MS drawings

Threads

  • ASME B1.1 UNC/UNF class 2B

Discontinuities

  • FF-N-836

Cleaning

  • ASTM A380
  • ASTM B322
  • MIL-S-5002

Protective Finish

  • ASTM B633
  • SAE AMS-QQ-P-416

Chemical Composition

  • ASTM A751

Plating Thickness

  • ASTM B568

Plating Adhesion

  • ASTM B571
  • SAE AMS-QQ-P-416

Pyrometry

  • SAE AMS-2750

Embrittlement/Stress Relief

  • ASTM B849
  • ASTM B850

Tensile/Proof

  • ASTM F606

Sampling

  • ANSI ASQC Z1.4
  • ASME B18.18.2
  • ASTM F1470
  • MIL-STD-105