TM 1-1500-204-23-6
Figure 2-13. Bolted Joint with Oversize Hole
installations where high-shear capability is required. An exception to this high-shear capability is the hardware installed
in the body structure maintenance splices. Standard bolts or screws may be substituted for Huck bolts provided the
following criteria are met:
•
Use standard bolts or screws only when Huck bolts or equivalent fasteners are not available.
•
The hole diameter must be large enough not to interfere with the threads of the bolts, but small enough to provide
interference fit between the hole and the shank of the bolt.
•
When bolts are used to replace Huck bolts used in shear applications, the following series bolts can be used: NAS
1103-1120, NAS 1303-1320, NAS 6203-6220, NAS 624 and Hi-Lok HL-18. When bolts are used to replace Huck
bolts used in tension applications, use NAS 624 series bolts (use NAS 1303 for replacement of 3/16-inch diameter
Huck bolts used in tension).
Table 2-6. Huck and Hi-Lok Bolt Substitution
Hole
Huck
Hi-Lok
NAS
dia.
part No.
part No.
part No.
(inches)
R 3001-5
HL18-5
NAS1465
0.161 to 0 164
R 3001-6
HL18-6
NAS1466
0.185 to 0 188
R 3001-8
HL18-81
NAS1468
0 242 to 0.246
R 3001-10
HL18-10
NAS1470
0.307 to 0.310
R 3002-5
HL21-5
---------
0.161 to 0.164
R 3002-6
HL21-6
NAS1956
0.185 to 0.188
R 3002-8
HL21-8
NAS1458
0.242 to 0.246
R 3002-10
HL21-10
NAS1460
0.307 to 0.310
2-24
