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MS21042-02 Nut (NAS1291-02)

MS21042-02 Nut (NAS1291-02)

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Part numbers : RX1-MS21042-02 , MS21042-02 , 123645-1 , MS21042-02
Unit of Measure: EA

1.88 EUR / EA 1.88 EUR 1.88 € excl. VAT

1.88 EUR / EA excl. VAT

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Availability
Up to 10 EA ready to ship on Thursday 2026-08-13
Order before 16:00 CET on Tuesday 2026-08-11
Up to 70 EA ready to ship on Monday 2026-08-17
Order before 16:00 CET on Tuesday 2026-08-11

The Airfasco MS21042-02 is a self-locking, reduced-height hex nut with a ring base. Also referenced as NAS1291-02, it is intended for aerospace fastening applications where the applicable design and maintenance data specifies this part number.

  • Manufacturer part numbers: MS21042-02 and 123645-1
  • Thread: 0.0860-56 UNJC-3B
  • Alloy-steel construction with cadmium plating in accordance with AMS-QQ-P-416, Type II, Class 2
  • Self-locking design with reduced hexagon and reduced-height profile
  • Maximum outside diameter: 4.2 mm
  • Overall height: 2.0 to 2.5 mm
  • Width across flats: 3.1 to 3.2 mm

Airfasco identifies the MS21042 series for weight-saving, thin-wall applications and notes that inspection and use must remain within the limitations of NASM33588. Verify part-number conformity, installation requirements, and approved maintenance data before use.

Relevant manufacturer documentation: MS21042 reference drawing and MS33588 limitations of use.

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