AIA/NAS 1081-2007 pdf download SETSCREW, SELF – LOCKING
NOT PRACTICAL FOR TYPE B CONE POINT SEE VIEW A. CONE POINT CONFIGURATION LIMITS THE NUMBER OF THREADS.
FOR LENGTHS ABOVE HEAVY LINE SEE NOTE 5.
MATERIAL: STEEL, HIGH GRADE ALLOY 40L37, 4037 (UNS G40370), 41 37 (UNS G41 370), 41 40 (UNS G41 400), 41 L40, 8630 (UNS G86300), OR 8740 (UNS G87400). HARDENED BY QUENCHING IN OIL FROM THE
HARDENING TEMPERATURE AND TEMPERED TO 45-53 HRC.
CORROSION RESISTANT STEEL PER AMS 5640, TYPE 1 OR 2.
FINISH: STEEL – CADMIUM PLATE PER AMS-QQ-P-41 6, TYPE II, CLASS 2.
CRES – PASSIVATE PER AMS 2700, METHOD 1 , TYPE 2, CLASS 1 .
NOTES:
1 . SOCKET DEPTH: THE DEPTH OF SOCKET SHALL BE AS GREAT AS PRACTICABLE BUT VARYING CONDITIONS RENDER IT INADVISABLE TO SPECIFY DEFINITE VALUES FOR THIS DIMENSION.
2. SOCKET END OF SCREW SHALL BE FLAT AND CHAMFERED. THE CHAMFER SHALL EXTEND TO THE MINOR DIAMETER OF THE THREAD AND THE EDGE BETWEEN FLAT AND CHAMFER SHALL BE SLIGHTLY ROUNDED.
3. “M” DIMENSION SHALL CONFORM TO THE REQUIREMENTS OF NASM1 5981 EXCEPT AS NOTED. “N” AND “P” DIMENSIONS ARE THE MAXIMUM POINT PLUS ONE THREAD PITCH.
4. SEE NASM565 FOR SET SCREWS WITHOUT SELF-LOCKING FEATURE.
5. MIL-DTL-1 8240 DOES NOT ESTABLISH REQUIREMENTS FOR SIZE .0860-56 SCREWS AND LENGTH OF THREADS LESS THAN “M”. ONLY POSITIVE INDICATION OF TORQUE IS REQUIRED FOR ITEMS ABOVE THE HEAVY LINE.
6. OMIT ELEMENT TYPE CODE WHENEVER POSSIBLE TO ALLOW AN OPTION. 7. DIMENSIONS IN INCHES UNLESS OTHERWISE SPECIFIED.

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