This post explains for the Bolt, Hex Head, National Aerospace Standards (NAS).
The Part Number is NAS1304.
The function of this semiconductor is (NAS1303 / NAS1316) Bolt.
Manufacturer: Coast Fabrication
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Description
NAS1304 is a reference to a specific type of fastener that adheres to the National Aerospace Standards (NAS) in the United States. NAS standards are developed and maintained by the Aerospace Industries Association (AIA) to provide consistent engineering and technical requirements for aerospace hardware and components.
Bolt, Hex Head, Close Tolerance 160,000 PSI Tensile HEAD MARKING: BASIC PART NO., APPLICABLE DASH NO., AND MANFACTURER’S TRADEMARK RAISED OR DEPRESSED .010 MAX. LOCATION OPTIONAL POINT SHALL BE FLAT AND CHAMFERED. CHAMFER U. CHAMFER PLUS INCOMPLETE THREADS NOT TO EXCEED TWO PITCHES (d) DRILL P WHEN SPECIFIED BY PART NO, CSK OPTIONAL CHAMFER 15O TO C OPTIONAL DRILL N (3 HOLES) WITHIN .010 OF CENTER OF HEX FLAT WHEN SPECIFIED BY PART NO. LOCK WIRE HOLES MUST BE FREE FROM BURRS AND SHARP EDGES. THREAD PER MIL-S-7742, EXCEPT MAJOR DIA TO BE .001 BELOW MIN SHANK DIA. THREAD RUNOUT PER MIL-B-7838 Basic Part Number NAS1303 NAS1304 NAS1305 NAS1306 NAS1307 NAS1308 NAS1309 NAS1310 NAS1312 NAS1314 NAS1316 Thread #10-32 UNF-3A 1/4-28 UNF-3A 5/16-24 UNF-3A 3/8-24 UNF-3A 7/16-20 UNF-3A 1/2-20 UNF-3A 9/16-18 UNF-3A 5/8-18 UNF-3A 3/4-16 UNF-3A 7/8-14 UNF-3A 1-12 UNF-3A A .376 .367 .439 .430 .502 .492 .564 .553 .690 .679 .752 .741 .877 .865 .940 .9 […]
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NAS1304 Datasheet
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