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MS33737-15C
Instrument Mounting Nut A8943-632-493
Description
Cage type. Permit mounting of aircraft instruments from the front of the panel. No charge in panel or instrument design required. Non-magnetic (speed nut is brass; cage is phosphor bronze). Conform to MIL-N-3336. 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 force of in sert ing screw and screw-tightening torque. All instrument mounting nuts listed below take a 6-32 machine screw. Additional Info: 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
Specifications
| Alternate Part Number | A8943-632-24J |
|---|---|
| Industry Standards/Certification | MS33737 |
| Instrument Bezel Thickness | .375 |
| Material | Copper |
| Material Specification | Astm b139 assn std single material response shell, Astm b36 assn std single material response nut |
| Material Thickness | 0.012 |
| Maximum Dimension A | 0.750 in |
| NAS Parts No. | 487-20 |
| NIIN | 01-420-7611 |
| NSN | 5310-01-420-7611 |
| Nut Height | 0.740 inches minimum and 0.760 inches maximum |
| Nut Length | 0.661 inches minimum and 0.681 inches maximum |
| Nut Style | Sheet spring |
| Obsolete Part No. | A8943-632-493 |
| Our Part No. | MS33737-15C |
| Panel Thickness | 0.375 in |
| Part Number for Reference Only | NAS487-20 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416, ty2, cl2 fed spec single treatment response |
| Weight | .004 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS33737-15C. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error