PART NUMBER:

NA2177C

FEDERAL SUPPLY CODE:

32387

NA2177C One Lug Floating Anchor Nut

NUT, ANCHOR, ONE LUG, FLOATING, COUNTERBORED, 160 KSI, CRES, HIGH REUSABILITY

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Specifications
MATERIAL:
  • Nut

    A286 CRES per AMS5732 or AMS5737.

  • Retainer

    A286 CRES per AMS5525.

FINISH:
  • Nut

    Molybdenum disulfide dry film lubricant per AS5272.

  • Retainer

    Passivated per AMS2700.

PROCUREMENT SPECIFICATION:
  • NASM25027 except for performance requirements.

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Product Information

Marketing Summary

PART #: NA2177C

  • Nut
  • Anchor
  • One Lug
  • Floating
  • Counterbored
  • 160 KSI
  • CRES
  • High Reusability

Part Number Example Callout

NA2177C – 02 – 5:

NA2177C = Basic Part Number
-02 = .1900-32 Thread
-5 = Thread Relief (Dimension “M” – See Table I)

Notes:

  1. Screw threads per AS8879 before lubrication.
  2. Float of nut element shall not be less than .025 radially from centered position.
  3. Surface texture to be 125 microinches max, per ANSI B46.1.
  4. Magnetic permeability shall be less than 2.0 (air = 1.0) for a field strength of H=200 oersteds using a magnetic permeability indicator per MIL-I-17214 or equivalent.
  5. Nuts shall be designed to develop the tensile strength of bolts with an ultimate tensile strength of 160 KSI based on an area at 98% of the basic pitch diameter.
  6. High-reusability locking element shall provide locking torque per NASM25027 except cycle life to be 50 minimum with use of appropriate mating stud bolts.
  7. Angles +/- 1.

Specifications

MATERIAL
  • Nut:

    A286 CRES per AMS5732 or AMS5737.

  • Retainer:

    A286 CRES per AMS5525.

FINISH
  • Nut:

    Molybdenum disulfide dry film lubricant per AS5272.

  • Retainer:

    Passivated per AMS2700.

PROCUREMENT SPECIFICATION
  • :

    NASM25027 except for performance requirements.