FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 7. Aircraft Hardware, Control Cables, and Turnbuckles | 11. Hardware Identification Tables | 7-211. Washers
AC 43.13-1B
TABLE 7-14. (CONTINUED)
Washer Number
Description
MS9952
Washer, cup, lock,
spanner nut, cres.
AMS 5646
MS15795
Washer, flat,
metal
MS17811
Washer,
thrust, steel
MS19069-19070
Washer, key,
retaining
MS20002
Washer, plain,
csk., hi-strength
MS21258
Washer, key,
retaining, steel
MS25081
Washer, key
MS27051
Washer, slotted
MS27111
MS27129
MS27183
Washer, finishing,
countersunk
Washer, finishing,
csk., 80°, 82°
Washer, flat,
round
9/8/98
TABLE 7-14. (CONTINUED)
Washer Number
Description
MS28777
Washer, hydraulic,
packing backup
MS35333-35334
MS35335-35336
MS35337-35340
Washer, lock,
flat internal tooth,
light and heavy
Washer, lock,
flat and csk.,
external tooth
Washer, lock,
med., light, heavy
MS35790
MS122026-122075
Washer, lock,
100° csk.,
ext. tooth
Washer,
lock spring
MS172201-172235
Washer, key, single
bearing, retaining
MS172271-172320
Washer, key, single
NAS70
Washer, plain
NAS143
NAS390-391
Washer,
csk. and plain
Washer, finishing
Page 7-70
Par 7-196