AN Bolt Quick Reference
AN3–AN16 — Wrench Sizes & Torque at a Glance
AN Bolt Part Number Decoder
AN
Standard
3
Dia. Code
D
Drilled Shank
D
Drilled Head
14
Grip Length
A
No Washer
AN3DD14A = 3/16" dia, drilled shank & head, 14/16" grip, no washer under head
Suffix Codes
A
No washer under head
D
Drilled shank (cotter pin)
DD
Drilled shank + drilled head
H
Drilled head only (safety wire)
C
Corrosion-resistant steel
(blank)
Cadmium plated steel
Grip
= dash# × 1/16"
| AN # | Dia | Thread | Head A/F | Nut | Torque Min (in‑lb) | Torque Max (in‑lb) |
|---|---|---|---|---|---|---|
| AN3 | 3/16" | 10-32 | 5/16" | 3/8" | 20 | 25 |
| AN4 | 1/4" | 1/4-28 | 7/16" | 7/16" | 50 | 70 |
| AN5 | 5/16" | 5/16-24 | 1/2" | 1/2" | 100 | 140 |
| AN6 | 3/8" | 3/8-24 | 9/16" | 9/16" | 160 | 190 |
| AN7 | 7/16" | 7/16-20 | 5/8" | 5/8" | 450 | 500 |
| AN8 | 1/2" | 1/2-20 | 3/4" | 3/4" | 480 | 690 |
| AN9 | 9/16" | 9/16-18 | 7/8" | 7/8" | 800 | 1000 |
| AN10 | 5/8" | 5/8-18 | 15/16" | 15/16" | 1100 | 1300 |
| AN12 | 3/4" | 3/4-16 | 1-1/8" | 1-1/8" | 2300 | 2500 |
| AN16 | 1" | 1-14 | 1-1/2" | 1-1/2" | 5000 | 7000 |