TM 1-1500-204-23-6
Table 2-2. Bolt Diameter by Part Number
Part No.
Dia.
AN3
3/16
AN4
1/4
AN5
5/16
AN6
3/8
AN7
7/16
AN8
1/2
AN9
9/16
AN10
5/8
AN12
3/4
AN14
7/8
AN16
1
Table 2-3. Bolt Material by Letter Preceding
Dash Number
Code
Material
DD
Aluminum Alloy
C
Corrosion-Resistant Steel
No letter
Nickel Steel
Table 2-4. Hole Location by Letter
Location
Code
Undrilled Bolt
Add A after dash number
Drilled Shank Only
No letter required
Drilled Head Only
Add H before dash number
and A after dash number
Drilled Head and Shank
Add H before dash number
Table 2-5. Bolt Length by Dash Number
Dash No.
-3
3/8
-4
1/2
-5
5/8
-6
3/4
-7
7/8
-10
1
-11
1 1/8
-12
1 1/4
-13
1 3/8
-14
1 1/2
-15
1 5/8
-16
1 3/4
-17
1 7/8
-20
2
-21
2 1/8
-22
2 1/4
h.
Internal Wrenching Bolts. Internal wrenching
bolts, as shown in figure 2-5, are high strength steel
bolts used primarily in tension applications. The bolt
hole must be countersunk or a high tensile countersunk
washer must be used to clear the large corner radius of
the shank at the head and give adequate bearing area.
Use a high tensile plain washer under nut if required.
Do not substitute common aircraft bolts and washers for
high tensile bolts and washers.
Figure 2-5. Internal Wrenching Bolt
2-17
