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
9/8/98
TABLE 7-13. (CONTINUED)
Nut Part Number
Description
NAS8679
Nut, self-locking,
low height
550 °F, 800 °F
TABLE 7-14. TABLE OF WASHERS.
Washer Number
Description
AN935
Washer, lock,
spring
AN936
Washer,
tooth lock
AN950 and 955
AN960
Washer,
ball socket,
ball seat
Washer, flat
AN961
AN970
AN975
Washer,
flat electrical
(Brass, silver or
tin-plated)
Washer,
flat, wood
Washer, flat
AN8013
Washer, insulator
AN122576-122600
Washer,
plain steel
AC 43.13-1B
TABLE 7-14. (CONTINUED)
Washer Number
Description
MS9081
Washer, key dbl.
Bearing retaining
MS9274
Washer, key, dbl.
Bearing ret. Cres.
MS9276
MS9320-9321
MS9482
MS9549
Washer, key, cres.
AMS 5510
180° locking
Washer, flat
AMS 6350 and
5510
Washer, flat,
steel AMS 6437
or AMS 6485
diffused nickel cad.
Csk.
Washer, flat,
AMS 5510
MS9581
Washer, key, cres.
AMS 5510 90° locking
MS9582
MS9684
Washer, key,
cres. AMS 5510
270° locking
Washer, cup, lock
cres. AMS 5510
MS9768
MS9880
Washer, flat,
cres. AMS 5525
and AMS 5737 csk.
Washer, cup,
lock cres.
AMS 5510
Par 7-196
Page 7-69