NAS1581
Genuine Aircraft Hardware
Countersunk ScrewAll original Text, Tables, and Drawings are Copyright 1994-2006 reproduction by permission only.
Genuine Aircraft Hardware Co.
High Strength, Close Tolerance, Reduced (Shear) Head, Countersunk Screw
Important Note! this type of fastener uses the next smaller
NAS1581
ETC
Flush Reduced Head Bolt
NAS1581 100 DEG. FLUSH REDUCED HEAD BOLT
FIRST DASH NO.
-3
NAS1581
THREAD UNJF-3A
.1900-32
"A" DIA "B" DIA MAX MIN
.3047 .2570
"D" DIA .1895 .1885 .2495 .2485 .3120 .3110 .3745 .3735 .4370 .4360 .4995 .4985 .5615 .5605 .6240 .6230
100