Military Standard - Sheet Spring Nut - MS33737-16C
Genuine OEM Part
Description: Sheet Spring Nut
Part Number: MS33737-16C
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Alternate Part Numbers: NAS487-21, A8944-632-24J, A8944-632, A8944-632-493
Used for mounting of aircraft instruments from the front of the panel.
Description:
Permit mounting of aircraft instruments from the front of the panel. No change in panel or instrument design required. Non-magnetic (speed nut is brass; the cage is phosphor bronze). Conform to MIL-N-3336. The cage is easily compressed with finger-pressure to allow insertion of legs into clearance holes. When fully inserted and pressure is released, legs spring apart; retain SPEED NUT in screw-receiving position. Turned down corners hold firm against forces of inserting screw and screw-tightening torque. All instrument mounting nuts listed below take a 6-32 machine screw.
The thread size is the same on each nut, but the instrument bezel thickness can be different per gauge. They are ordered by the back bezel thickness. They are inserted from the back, and they have ears pointing out that slide into a groove between the front and back bezel to stay in place.
Item Specification:
| Material Thickness | : | 0.040" inches nominal | |
| Mating Member Diameter Accommodated | : | 0.138" Inches nominal | |
| Nut Style | : | Sheet spring | |
| Panel Thickness | : | 0.375" inches minimum | |
| Nut Mounting Provision | : | Gripping prongs | |
| Gripping Prong Quantity | : | 2 | |
| Gripping Prong Length | : | 0.375" inches minimum | |
| Material | : | Copper alloy overall | |
| Surface Treatment | : | Cadmium overall | |
| Surface Treatment Document And Classification | : | QQ-P-416, ty 2, cl 3 fed spec single treatment response overall |
Item Replacement History
| • Part Number: MS33737-16C | NUT: SHEET SPRING, CU | |
| • Part Number: MS33737-16 | N/A | |
| • Part Number: NAS487-21 | USE MS33737-16C=28 |
**Cessna Model 525 Illustrated Parts Catalog [ Click Here]