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AN4 Bolt Dash Numbers — Complete Guide
The AN4 bolt series is one of the most widely used aviation fasteners. Each dash number represents a specific length or variant, such as drilled shank, undrilled shank (“A”), or drilled head (“H”). This page provides a complete reference for all AN4 bolt dash numbers stocked by Pilot Shop.
All AN4 bolts are available through Pilot Shop, including drilled‑shank variants and undrilled (“A”) versions.
View All AN4 Bolts
For drilled‑shank AN4 bolts (our main stocked line), shop below:
AN4 Bolt Variants
- Standard Drilled (AN4‑X) — Drilled shank (main stocked line)
- A Variant (AN4‑XA) — Undrilled shank
AN4 Drilled Bolt Dash Numbers (AN4‑X)
The following dash numbers are stocked for the drilled AN4 bolt:
AN4‑3, AN4‑4, AN4‑5, AN4‑6, AN4‑7, AN4‑10, AN4‑11, AN4‑12, AN4‑13, AN4‑14, AN4‑15, AN4‑16, AN4‑17, AN4‑20, AN4‑21, AN4‑22, AN4‑23, AN4‑24, AN4‑25, AN4‑26, AN4‑27, AN4‑30, AN4‑31, AN4‑32, AN4‑33, AN4‑34, AN4‑35, AN4‑36, AN4‑37, AN4‑40, AN4‑41, AN4‑42, AN4‑43, AN4‑44, AN4‑45, AN4‑46, AN4‑47, AN4‑50, AN4‑51, AN4‑52, AN4‑55, AN4‑56, AN4‑57, AN4‑60, AN4‑64.
AN4 Undrilled Bolt Dash Numbers (AN4‑XA)
The following dash numbers are stocked for the undrilled (“A”) AN4 bolt:
AN4‑3A, AN4‑4A, AN4‑5A, AN4‑6A, AN4‑7A, AN4‑10A, AN4‑11A, AN4‑12A, AN4‑13A, AN4‑14A, AN4‑15A, AN4‑16A, AN4‑17A, AN4‑20A, AN4‑21A, AN4‑22A, AN4‑23A, AN4‑24A, AN4‑25A, AN4‑26A, AN4‑27A, AN4‑30A, AN4‑31A, AN4‑32A, AN4‑34A, AN4‑35A, AN4‑36A, AN4‑37A, AN4‑40A, AN4‑41A, AN4‑42A, AN4‑43A, AN4‑44A, AN4‑45A, AN4‑46A, AN4‑47A, AN4‑50A, AN4‑51A, AN4‑52A, AN4‑53A, AN4‑54A, AN4‑55A, AN4‑56A, AN4‑57A, AN4‑60A, AN4‑61A, AN4‑62A, AN4‑64A, AN4‑66A, AN4‑72A.
Need a specific dash number?
If you need a dash number not listed above, contact us for special‑order availability.
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Browse our complete range of aviation-grade nuts and bolts, including all AN4 variants and more.
