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NAS1351 screw type with double hex or similar
Gents, I´m looking for a screw similar to the NAS1351 screw but with another head drive. Obviously, the internal hex at the NAS1351 does only give accessibility every 60 degree. Is there a screw/ head type which provides a better accesibility? I found a German LN29949 aerospace screw (socket...- conrad1
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- Replies: 16
- Forum: Spacecraft engineering
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Assembly torque for drilled socket head screws
Hello, I´m looking in vain for assembly torque values for NAS1351 (drilled socket head) screws. The assembly torque for undrilled heads damages the alan key far to early before achieving the desired assembly torque. The damage occurs in a way that it´s impossible tighten or untighten the screw...- conrad1
- Thread
- Replies: 12
- Forum: Aircraft engineering
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Angular contact ball bearings according in small size
Hi, i´m looking for some small angular contact ball bearings for an aircraft application. The maximum OD shall not exceed 7/8". I found some Mil specs with a suitable type, but all sizes were too big. My own feeling is that there must be a bunch of specs, but i wasn´t able to found something...- conrad1
- Thread
- Replies: 7
- Forum: Aircraft engineering
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Bolt-nut-combinations with cotter pins
Hi, i usually choose the combination NAS670x (bolt) and MS17825 (nut) – and the cotter pin of course. During the stress calculations of the bolted connections, a problem raised by the low tensile strength of the MS nuts. The tensile strength of the MS nut is approximately only half of the NAS...- conrad1
- Thread
- Replies: 13
- Forum: Spacecraft engineering
