Aircraft bolts are fabricated from cadmium or zinc plated corrosion resistant steel, unplated corrosion resistant steel, and anodized aluminum alloys. Most bolts used in aircraft structures are either general purpose. In certain cases, aircraft manufacturers make bolts of different dimensions or greater strength than the standard types. Such bolts are made for a particular application, and it is of extreme importance to use like bolts in replacement. Special bolts are usually identified by the letter "S" stamped on the head.

AN bolts come in three head styles - hex head, clevis, and NAS bolts are available in hex head, internal wrenching, and countersunk head styles.

The hex head aircraft bolt (AN-3 through AN-20) is an all purpose structural bolt used for general applications involving tension or shear loads where a light drive fit is permissible (0.006 inch clearance for a 5/8 inch hole, and other sizes in proportion).

Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of AN bolts. Every part that we sell is in Factory new (FN) condition and we provide our company’s certificate of conformance for all parts on every order. See below for our products.

various-an-bolt
Unit of Measure
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AN386 AN386-1-10
Taper Pin - AN386-1-10
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AN-CRES-BOLT-DRILLED AN3C16
Airframe Bolt, Drilled - AN3C16
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AN-CRES-BOLT-UNDRILLED AN3C17A
Airframe Bolt - AN3C17A
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AN-CRES-BOLT-DRILLED AN3C20
Airframe Bolt, Drilled - AN3C20
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AN-CRES-BOLT-DRILLED AN3C23
Airframe Bolt, Drilled - AN3C23
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AN-CRES-BOLT-DRILLED-HEAD AN3CH7A
Airframe Bolt, Drilled Head - AN3CH7A
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AN-BOLT-DRILLED-HEAD AN3H23A
Airframe Bolt, Drilled Head - AN3H23A
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AN-BOLT-DRILLED-HEAD AN3H4
Airframe Bolt, Drilled Head - AN3H4
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AN-CRES-BOLT-DRILLED AN3C17
Airframe Bolt, Drilled - AN3C17
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AN3CA AN3C23A
Airframe Bolt - AN3C23A
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AN42BA AN42B11A
Eye Bolt - AN42B11A
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AN42BA AN42B12A
Eye Bolt - AN42B12A
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AN42BA AN42B16A
Eye Bolt - AN42B16A
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AN42BA AN42B17A
Eye Bolt - AN42B17A
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AN42B AN42B4
Eye Bolt - AN42B4
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AN42BA AN42B3A
Eye Bolt - AN42B3A
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AN42B AN42B5
Eye Bolt - AN42B5
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AN42BA AN42B5A
Eye Bolt - AN42B5A
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AN42BA AN42B7A
Eye Bolt - AN42B7A
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AN42B AN42B10
Eye Bolt - AN42B10
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AN42B/AN43B Eye Bolts AN43B10A
Eye Bolt - AN43B10A
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AN42B/AN43B Eye Bolts AN42B14A
Eye Bolt - AN42B14A
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AN42B/AN43B Eye Bolts AN43B13A
Eye Bolt - AN43B13A
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AN42B/AN43B Eye Bolts AN43B14A
Eye Bolt - AN43B14A
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Unit of Measure
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