#3 FLAT HEAD PLOW BOLTS
3/8 to 5/8 Diameters with Flat Heads (per ANSI B18.9, Regular Head Series)
Earnest Machine Products line of #3 Head Plow Bolts in sizes 3/8 to 5/8 diameters are manufactured to the dimensions specified by ASME/ANSI B18.9 for Regular Head Series.
| Size |
Head |
Width of
Square |
Feed
Thick |
Head
Thickness |
Corner Rad |
| A |
B |
F |
S |
CR |
| Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
| 3/8 – 16 |
.708 |
656 |
.387 |
.375 |
.031 |
.000 |
.312 |
.281 |
.047 |
| 7/16 – 14 |
.826 |
.766 |
.450 |
.438 |
.036 |
.000 |
.364 |
.328 |
.047 |
| 1/2 – 13 |
.945 |
.875 |
.515 |
.500 |
.042 |
.000 |
.417 |
.375 |
.047 |
| 5/8 – 11 |
1.147 |
1.063 |
.640 |
.625 |
.050 |
.000 |
.506 |
.456 |
.078 |
Overall
Length |
Thread Length per Bolt Diameter |
| 3/8 |
7/16 |
1/2 |
5/8 |
| Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
| 1 |
T to H |
- |
T to H |
- |
T to H |
- |
T to H |
- |
| 1 1/4 |
T to H |
- |
T to H |
- |
T to H |
- |
T to H |
- |
| 1 1/2 |
1 |
T to H |
T to H |
- |
T to H |
- |
T to H |
- |
| 1 3/4 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
T to H |
- |
| 2 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
T to H |
- |
| 2 1/4 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
1 1/2 |
T to H |
| 2 1/2 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
1 1/2 |
T to H |
| 2 3/4 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
1 1/2 |
T to H |
| 3 to 6 |
1 |
T to H |
1 1/8 |
T to H |
1 1/4 |
T to H |
1 1/2 |
T to H |