AC 43.13-1B

Historical

Advisory circular · Acceptable Methods, Techniques, and Practices—Aircraft Inspection and Repair

A newer version is currentThis is a historical version. AC 43.13-1B CHG 1 Ed Update is the version in force, approved September 27, 2001.
Approved
September 8, 1998
Last reviewed
June 11, 2024
Cancelled by
AC43.13-1B CHG 1
Family
AC 43.13-1 · 7 versions
Revision
B
14 CFR parts
43, 65, 145, 21, 105, 23, 91, 121, 25
Cited by
95 ADs

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 397–408
Page 409Open in PDF

Par 7-196 Page 7-345 TABLE 7-11. (CONTINUED) Screw MS, AN, or NAS Number Description NAS1081 Setscrew, hex. socket, self-locking NAS1096 Screw, hex. head, recess, full thr.

NAS1100 Screw, machine, panhead, full thread, torq.-set NAS1101 Screw, machine, flat fill hd. full thread NAS1102 Screw, machine, 100° flathead. full thr. torq.- set NAS1121-1128 Screw, machine, flat fill hd., short thread, torq.-set NAS1131-1138 Screw, machine, pan hd., short thread, torq.-set NAS1141-1148 Screw, machine, panhead. modified, short thread torq.-set NAS1151-1158 Screw, machine, 100° flathead., sort thread, torq.-set NAS1161-1168 Screw, machine, 100° flathead., shear, torq.-set NAS1171-1178 Screw, panhead., shear, self-lock., torq.-set TABLE 7-11. (CONTINUED) Screw MS, AN, or NAS Number Description NAS1181-1188 Screw, flat fill hd., self-locking, torq.-set NAS1189 Screw, flat 100° hd., full thread, self-locking NAS1190 Screw, panhead., self-locking, full thread NAS1191 Screw, flat fill. hd., full thread, self-locking NAS1216 Screw, panhead hi-torque, full thread NAS1217 Screw, panhead, hi-torque, short thread NAS1218 Screw, panhead, hi-torque, short thread NAS1219 Screw, 100° csk. hd., hi-torque, full thread NAS1220 Screw, 100° csk. hd., hi-torque, short thread NAS1221 Screw, 100° clk. hd., hi-torque, long thread NAS1298 Screw, shoulder, brazier head

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Par 7-196 Page 7-346 TABLE 7-11. (CONTINUED) Screw MS, AN, or NAS Number Description NAS1299 Screw, shoulder, 100° flathead NAS1300 Thumbscrew, drilled/undrilled NAS1301 Screw, panhead, assembled washers phillips recess NAS1351-1352 Socket Capscrew, hex. head, drilled/undrilled NAS1393 Screw, 82° flathead, torq-set NAS1402-1406 Screw, panhead, phillips recess NAS1579 Screw, panhead., full thread, 1200° F NAS1603-1610 Screw, flush head, .0312 O.S.

NAS1620-1628 Screw, machine, 100° flat short thread, torq-set NAS1630-1634 Screw, machine, panhead., short thread, torq.-set NAS1635 Screw, panhead cross recessed, full thread TABLE 7-11. (CONTINUED) Screw MS, AN, or NAS Number Description NAS5000-5006 Screw, panhead, tri-wing recess, short thr., alloy stl.

NAS5100-5106 Screw, panhead, tri-wing recess, short thr., cres.

NAS5200-5206 Screw, panhead, tri-wing recess, short thr., cres.

NAS5300-5306 Screw, fillister head, tri-wing recess, full thr., alloy stl.

NAS5400-5406 Screw, fillister hd., tri-wing recess, full thr., cres.

NAS5500-5506 Screw, fillister hd., triwing recess, full thr., titanium NAS5600-5606 Screw, 100° head, tri-wing recess, full thr., alloy stl.

NAS5700-5706 Screw, 100° head, tri-wing recess, full thr., cres.

NAS5800-5806 Screw, 100° head, tri-wing recess, full thr., titanium NAS5900-5903 Screw, hex. Head, tri-wing recess, full thr., alloy stl.

NAS6000-6003 Screw, hex. Head, tri-wing recess, full thr., cres.

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Par 7-196 Page 7-347 TABLE 7-11. (CONTINUED) Screw MS, AN, or NAS Number Description NAS6100-6103 Screw, hex head, tri-wing recess, full thr., titanium NAS6500-6506 Screw, 100° oval hd., tri-wing recess, full thr., cres.

NAS6900-6904 Screw, panhead, tri-wing recess, full thr., cres.

TABLE 7-12. TABLE OF BOLTS.

Bolt Number Description AN3-20

Bolt, machine AN21-36

Bolt, clevis AN42-49

Bolt, eye AN73-81

Bolt, machine, drilled AN173-186

Bolt, aircraft Close tolerance AN774

Bolt, flared tube AN775

Bolt, universal fitting

TABLE 7-12. (CONTINUED) Bolt Number Description AN148551-149350

Bolt, socket head, 6-hole drilled, .190- .625 AN101001-101900

Bolt, hex, steel, head AN101901-102800

Bolt, hex., drilled shank, steel AN102801-103700

Bolt. Drilled hex. Head, (one hole), steel AN103701-104600

Bolt, drilled hex. Head, steel, (six holes) AN104601-105500

Bolt, hex. Head, corrosion-resistant steel AN105501-106400

Bolt, hex. Head, drilled shank, corrosion-resistant steel AN106401-107300

Bolt, hex., drilled head, (one holes), corrosion-resistant steel AN107301-108200

Bolt, hex., drilled head, (six holes), corrosion-resistant steel MS9033-9039 Bolt, machine 12pt.

Head, 130,000 psi min.

T.S.

MS9060-9066 Bolt, machine 12pt.

Double hex. 130,000 psi min. T.S. ext.

washer head, drilled

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Par 7-196 Page 7-348 TABLE 7-12. (CONTINUED) Bolt Number Description MS9088-9094

Bolt, machine, steel, drilled 12 pt. head MS9110-9113

Bolt, machine, double hex., ext. washer head, close tolerance MS9146-9152

Bolt, steel, 12 pt. hd.

black oxide 125,000 psi min. T.S.

MS9157-9163

Bolt, steel, 12pt. hd.

black oxide 125,000 psi min. T.S.

MS9169-9175

Bolt, steel, 12 pt. drilled hd., black oxide 125,000 psi min. T.S.

MS9224

Bolt, 12 pt. head, heat resistant MS9397-9402

Bolt, tee head, AMS 6322, chamfered cad. pl.

MS9432-9437

Bolt, tee head AMS 5735 chamfered MS9440-9448

Bolt, mach. steel.

AMS 6304 diffused nickel cad. hex. hd., 3 holes MS9449-9459

Bolt, mach. steel, AMS 6304 diffused nickel cad., hex. head MS9487-9497

Bolt, mach. hex. hd. full shank, AMS 5731

TABLE 7-12. (CONTINUED) Bolt Number Description MS9498-9508

Bolt, mach. hex. hd., 1 hole, full shank MS9516-9526

Bolt, mach., steel AMS 6322 cad.

1 hole hex. hd.

MS9527-9537

Bolt, mach., steel AMS 6322 cad.

1 hole hex. hd.

MS9554-9562

Bolt, mach., dbl. hex.

ext. wash. hd., PD shank, AMS 5731 MS9563-9571 Bolt, mach., dbl. hex.

ext. wash. hd. drilled, AMS 5731 MS9572-9580

Bolt, mach., dbl. hex.

ext. wash. hd., drilled, PD shank AMS 5731 silver plated MS9583-9591

Bolt, mach., hex. hd.

6 holes full shank, AMS 5731 MS9622-9630

Bolt, mach., hex. hd. 1 hole, PD shank, titanium AMS 4967 MS9641-9648

Bolt, mach., hex. hd., 1 hole, full shank titanium AMS 4967 MS9649-9652

Bolt, mach., hex. hd.

full shank, titanium AMS 4967 MS9676-9679

Bolt, mach., dbl. hex.

ext. wash. hd., cup washer locked, cres.

AMS 5731

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Par 7-196 Page 7-349 TABLE 7-12. (CONTINUED) Bolt Number Description MS9680-9683

Bolt, mach., dbl. hex.

ext. wash. hd., cup washer locked, steel AMS 6322 cad.

MS9685-9693

Bolt, mach., hex. hd. 1 hole, PD shank, steel AMS 6304 diffused nickel cad.

MS9694-9702

Bolt mach. dbl. hex.

ext. wash. hd. AMS 5708 MS9703-9711

Bolt, mach., dbl. hex.

ext. wash. hd., drilled, AMS 5708 MS9712-9720

Bolt, mach. dbl. hex.

ext. wash. hd. drilled, AMS 5708 silver plate MS9730-9738

Bolt, mach., dbl. hex.

ext. wash. hd.

PD shank, cres. AMS 5643 MS9739-9747

Bolt, mach. dbl. hex.

est. wash, hd. drilled, PD shank, cres. AMS 5643 MS9748-9756

Bolt, mach. dbl. hex.

ext. wash. hd. PD shank, titanium AMS 4967 MS9757-9765

Bolt, mach., dbl. hex.

ext. wash. hd., PD shank, drilled, titanium AMS 4967 MS9781-9791

Bolt, hex. hd., mach.

full shank, AMS 5643 MS9792-9802

Bolt, mach., hex. hd.

1 hole, full shank, AMS 5643

TABLE 7-12. (CONTINUED) Bolt Number Description MS9803-9813

Bolt, mach., hex. Hd.

1 hole, full shank, AMS 5643 MS9814-9824

Bolt, mach., hex. Hd.

1 hole, PD shank, AMS 5643 MS9883-9891

Bolt, mach., dbl. Hex.

Ext. wash. Hd., AMS 5616 MS9892-9900

Bolt mach., dbl. Hex.

Ext. wash. Hd., AMS 5616 drilled MS9912-9920

Bolt, mach., dbl. Hex.

Ext. wash. Hd., PD shank, steel AMS 6322 cad.

MS9921-9929

Bolt, mach., dbl. Hex.

Ext. wash hd. PD shank, steel AMS 6322 cad. Drilled MS9930-9938

Bolt, mach., dbl. Hex.

Ext. wash. Hd., full shank, steel AMS 6322 cad.

MS9939-9946

Bolt, mach., dbl. Hex.

Ext. wash. Hd., drilled, full shank, steel AMS 6322 cad.

MS20004-20024

Bolt, int. wrench, 160 KSI MS20033-20046

Bolt, machine, hex. Head, 1200 °F MS20073-20074

Bolt, machine, aircraft, drilled hd., fine & coarse thr.

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Par 7-196 Page 7-350 TABLE 7-12. (CONTINUED) Bolt Number Description MS21091-21093

Bolt, self-lock., 100° flush head, cross recessed MS21094-21095

Bolt, self-lock., hex.

head MS21096-21097

Bolt, self-lock., panhead, crass recessed MS21098-21099

Bolt, self-lock., 12 pt.

ext. wrenching MS21250

Bolt, 12 pt., ext. wrenching NAS144-158

Bolt, internal wrenching, steel, 1/4-28 thru 1-1/8-12 NAS333-340 Bolt, 100°, close tolerance, hi-strength NAS428

Bolt, adjusting, crowned hex. hd.

NAS464

Bolt, shear, close tolerance NAS501

Bolt, hex. head, drilled & undrilled NAS551

Bolt, universal fitting

TABLE 7-12. (CONTINUED) Bolt Number Description NAS563-572 Bolt, full thread, fully identified head NAS583-590 Bolt, 100° head, hi-torque, close tol.

160,000 psi NAS624-644 Bolt, twelve point external wrench, 180000 psi NAS653-658

Bolt, hex. head, close tolerance, ti. alloy NAS663-668

Bolt, full thread, fully identified head NAS673-678

Bolt, hex. head, close tolerance, ti. alloy NAS1003-1020

Bolt, machine, hex. head NAS1053

Eye Bolt Assembly, Shoulder nut NAS1083

Bolt, 100° flathead, titanium alloy NAS1103-1120 Bolt, machine, hex. head NAS1202-1210 Bolt, 100° phil.

recessed, close tolerance, 16,000 psi

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Par 7-196 Page 7-351 TABLE 7-12. (CONTINUED) Bolt Number Description NAS1223-1235

Bolt, self-locking, hex. head 250 °F NAS1236

Bolt, universal, Tube-end, flareless NAS1243-1250

Bolt, 100° head, hi-torq. 1600 psi NAS1253-1260

Bolt, 100° head, flush hd., .0312 O.S.

hi-torque NAS1261-1270

Bolt, hex. head, short thread NAS1271-1280

Bolt, 12 point hd., external wrenching NAS1297

Bolt, shoulder, hex. head NAS1303-1320

Bolt, hex. head, close tolerance, 160,000 psi NAS1414-1422

Lock bolt, shear 100° head, all. steel NAS1424-1432

Lock bolt, shear protruding head, steel NAS1503-1510

Bolt, 100° flush head, hi-torq.

TABLE 7-12. (CONTINUED) Bolt Number Description NAS1516-1522

Lock Bolt, 100° head, pull type, al. Alloy NAS1578

Bolt, shear panhead, 1200 °F NAS1580

Bolt, tension, flush hd., 1200 °F NAS1581

Bolt, shear reduced 100 °F flush head, 1200 °F NAS1586

Bolt-tension, 1200 °F, 12 point, external wrenching NAS1588

Bolt, tension, flush hd., 1200 °F NAS1703-1710

Bolt, 100° head, .0156 O.S. shank, NAS2005-2012

Bolt lock, protruding head, ti. Alloy NAS2105-2112

Bolt, lock, 100° head, ti. Alloy NAS2206-2210

Bolt, lock, stump type, protruding head, ti.

Alloy NAS2306-2310

Bolt, lock, stump type, 100° head, ti. Alloy

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Par 7-196 Page 7-352 TABLE 7-12. (CONTINUED) Bolt Number Description NAS2406-2412

Bolt, lock, shear protruding head, ti.

alloy NAS2506-2512

Bolt, lock, 100°head, ti. alloy NAS2606-2612

Bolt, lock, shear protruding head, ti. alloy NAS2706-2712

Bolt, lock, shear 100° head, ti. alloy NAS2803-2810

Bolt, lock, 100° hd., torq-set 180,000 psi NAS2903-2920

Bolt, hex. head, .

0156 O.S. shank, 160,000 psi NAS3003-3020

Bolt, hex. head, .

0312 O.S. shank, 160,000 psi NAS3103-3110

Bolt, U type NAS3203-3210

Bolt, hook NAS3303-3305

Bolt, U strap type NAS4104-4116

Bolt, 100° head, tri-wing recess, long thr., alloy stl.

TABLE 7-12. (CONTINUED) Bolt Number Description NAS4204-4216

Bolt, 100°head, tri-wing recess, long thr., cres.

NAS4304-4316

Bolt, 100° head, tri-wing recess, long thr., titanium NAS4400-4416

Bolt, 100° head, tri-wing recess, short thr., alloy stl.

NAS4500-4516

Bolt, 100° head, tri-wing recess, short thr., cres.

NAS4600-4616

Bolt, 100° head, tri-wing recess, short thr., titanium NAS4703-4716

Bolt, 100° reduced, tri-wing recess, short thr., alloy stl.

NAS4803-4816

Bolt, 100° reduced, tri-wing recess, short thr., cres.

NAS4903-4916

Bolt, 100° reduced, tri-wing recess, short thr., titanium NAS6203-6220

Bolt, hex. head, short thread, alloy steel NAS6303-6320

Bolt, hex. head, short thread, cres.

NAS6403-6420

Bolt, hex. head, short thread, titanium

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Par 7-196 Page 7-353 TABLE 7-12. (CONTINUED) Bolt Number Description NAS6604-6620

Bolt, hex head, long thread, alloy steel NAS6704-6720

Bolt, hex. head, long thread, cres.

TABLE 7-13. TABLE OF NUTS.

Nut Part Number Description AN256 Nut, self-lock right angle plate AN310 Nuts, castellated AN315 Nut, plain AN316 Nut, check AN320 Nut, castle shear AN335 Nut, plain, hex, nonstructural AN340 Nut, plain, hex., n-s, course thread AN341 Nut, plain, hex.

TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description AN345 Nut, plain, hex., n-s, fine thread AN350 Nut, plain, wing AN355 Nut, engine, slotted AN356 Nut, stamped AN360 Nut, plain, engine AN361 Self-locking nut plate, countersunk 100°, 550 °F.

AN362 Nut, plate, self-locking, noncounters., 550°F.

AN363 Nut, self-locking, 550 °F.

AN364 Nut, self-locking, thin, 250 °F.

AN365 Nut, self-locking 250°F.

AN366 Nut, plate, noncounters., 250°F.

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Par 7-196 Page 7-354 TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description AN373 Countersunk nut, plate 100°, 250°F.

AN805 Nut, union AN817 Nut, coupling AN818 Nut, coupling AN924 Nut, flared tube AN3054 Nut, coupling, elec. conduit AN3066 Nut, plain, hex.

conduit coupling AN6289 Nut, flared tube universal fitting AN121501-121550 Nut, plain or cres.

steel AN121551-121600 Nut, castel., hex.

MS9099-9100 Nut, hex., boss connection, aluminum & cres.

TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description MS9197-9199 Nut, tube coupling MS9200-9201 Nut, plain, hex., boss connection MS9356-9357 Nut, plain hex., A-286 MS9358-9359 Nut, castellated hex., A-286 MS9360 Nut, plain hex.

Drilled, A-286 MS9361-9362 Nut, plain hex.

Check, A-286 MS9363-9364 Nut, slotted hex.

Shear hd., A-286 MS9553 Nut, hex. Boss connection, cres.

MS9766-9767 Nut, dbl. Hex.

Cup washer locked, AMS 5737 cres. And AMS 6322 cad.

MS9881 Nut, plain, hex.

AMS 6322, cad. Plate MS9882 Nut, plain, hex., drilled, AMS 6322, cad. Plate

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Par 7-196 Page 7-355 TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description MS9951 Nut, spanner, end slots, cup washer locked, AMS 6322 MS16203 Nut, plain, hex.

Nonmagnetic MS17825-17826 Nut, self-locking, castle, hex. Regular and thin MS17828 Nut, self-locking, nylon insert, 250°, regular ht., monel MS17829-17830 Nut, self-locking, nylon insert, 250°, regular ht., cres. Steel, steel MS19067-19068 Nut, plain, round, retaining MS20341 Nut, electrical, plain, hex.

MS20364 Nut, self-locking, 250 °F, thin MS20365 Nut, self-locking, 250° F, regular MS20501 Nut, plate, self-locking, two lug MS21025 Nut, castellated bearing, retaining

TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description MS21047-21048 Nut, self-locking, plate, two lug, low ht.

MS21049-21050 Nut, self-locking, plate, two lug, 100° csk., low ht.

MS21051-21052 Nut, self-locking, plate, one lug, low ht.

MS21053-21054 Nut, self-locking, plate, one lug, 100° csk.

MS21055-21056 Nut, self-locking, plate, corner, low ht.

MS21057-21058 Nut, self-locking, plate, corner, 100° csk.

MS21059-21060 Nut, self-locking, plate, two lug, floating, low ht.

MS21061-21062 Nut, self-locking, plate, floating low ht., one lug MS21069-21070 Nut, self-locking, plate, two lug, low ht., reduced rivet spacing MS21071-21072 Nut, self-locking, plate, one lug, low ht., reduced rivet spacing MS21073-21074 Nut, self-locking, plate, corner, reduced rivet spacing

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Par 7-196 Page 7-356 TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description MS21078 Nut, self-locking, plate, two lug, nylon insert MS21080 Nut, self-locking, plate, one lug, nylon insert MS21081 Nut, self-locking, plate, corner, nylon insert MS21083 Nut, self-locking, hex., nylon insert MS21340 Nut, plain, hex., electrical, thin, wire holes MS21917 Nut, sleeve coupling, flareless MS21921 Nut, sleeve coupling, flareless MS24679-24680 Nut, plain cap, low & high crown MS25082 Nut, plain, thin, hex., electrical MS27040 Nut, plain square MS27128 Nut, plain, welding

TABLE 7-13. (CONTINUED) N u tP a r tN u m b e r Description MS27130-27131 Nut, blind, rivet, flathead., open and closed end MS27151 Nut, stamped MS27955 Nut, spanner, plain, round MS35425-35426 Nut, wing, plain & drilled MS35649-35650 Nut, plain hex.

MS35690-35691 Nut, plain hex.

MS35692 Nut, slotted hex.

MS51967-51972 Nut, plain, hex.

MS90415 Nut, self-locking, 12 point captive washer MS172236-172270 Nut, spanner, bearing, retaining MS172321-172370 Nut, spanner