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Dzus studs are the visible and functional element of quarter turn fastener systems used on aircraft panels and access points. Our selection includes a range of stud lengths, head styles, and retention types to match original WWII and vintage aircraft applications.

Proper stud selection depends on panel thickness, grommet configuration, and spring engagement. We provide sizing guidance and reference data to help ensure correct fitment and secure locking performance. Using the wrong stud length can result in loose panels or excessive preload, both of which can lead to damage or failure.

We prioritize compatibility with original Dzus systems and offer support in identifying correct replacements when working from worn or incomplete assemblies. Accurate stud selection helps maintain both the structural integrity and serviceability of aircraft panels.

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  • A3926 - Generator Step Up Drive - Stearman
    Out of stock

    A3926 - Generator Step Up Drive - Stearman

    A3926 generator step-up drive, used to install a generator or alternator on a Continental 670 engine on the Stearman.Part Number: A3926Part Type: Generator Step Up DriveAircraft: Stearman (Continental 670 engine)Photos are for reference only.

  • 16-11466 - Bruz-Key Dzus Fastener Bottle Opener
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    16-11466 - Bruz-Key Dzus Fastener Bottle Opener

    16-11466 Bruz-Key, a Dzus tool that does more than just turn Dzus fasteners. Fits #4, #5, and #6.5 Dzus fasteners and doubles as a bottle opener.Part Number: 16-11466Part Type: Dzus Fastener Tool / Bottle OpenerMaterial: Stainless SteelPhotos are for...

  • Type FA Dzus Stud Fastener
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    FA5-35 Dzus Stud - 5/16" Dia Stud .350 Length

    FA5-35 is a Dzus Type FA flush/countersunk head stud with a 5/16" body diameter and .350" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number:...

  • Type FA Dzus Stud Fastener
    Out of stock

    FA5-250 Dzus Stud - 5/16" Dia Stud 2.500" Length

    FA5-250 is a Dzus Type FA flush/countersunk head stud with a 5/16" body diameter and 2.500" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number:...

  • Type A Dzus Stud Fastener
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    A4-25 Dzus Stud - 1/4" Body Diameter .250" Length

    A4-25 is a Dzus Type A oval/button head stud with a 1/4" body diameter and .250" length. Locks with a quarter-turn into a mating Type S4 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number: A4-25Head Type:...

  • Type A Dzus Stud Fastener
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    A5-35 Dzus Stud - 5/16" Body Diameter .350" Length

    A5-35 is a Dzus Type A oval/button head stud with a 5/16" body diameter and .350" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number: A5-35Head Type:...

  • Type A Dzus Stud Fastener
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    A5-30 Dzus Stud - 5/16" Body Diameter .300" Length

    A5-30 is a Dzus Type A oval/button head stud with a 5/16" body diameter and .300" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number: A5-30Head Type:...

  • Type FA Dzus Stud Fastener
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    FA6-1/2-45 Dzus Stud - 13/32" Dia Stud .450 Length

    FA6-1/2-45 is a Dzus Type FA flush/countersunk head stud with a 13/32" body diameter and .450" length. Locks with a quarter-turn into a mating Type S6-1/2 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part...

  • Type FA Dzus Stud Fastener
    Out of stock

    FA6-1/2-50 Dzus Stud - 13/32" Dia Stud .500 Length

    FA6-1/2-50 is a Dzus Type FA flush/countersunk head stud with a 13/32" body diameter and .500" length. Locks with a quarter-turn into a mating Type S6-1/2 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part...

  • Type A Dzus Stud Fastener
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    A5-40 Dzus Stud - 5/16" Body Diameter .400" Length

    A5-40 is a Dzus Type A oval/button head stud with a 5/16" body diameter and .400" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number: A5-40Head Type:...

  • Type FA Dzus Stud Fastener
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    FA6-1/2-60 Dzus Stud - 13/32" Dia Stud .600 Length

    FA6-1/2-60 is a Dzus Type FA flush/countersunk head stud with a 13/32" body diameter and .600" length. Locks with a quarter-turn into a mating Type S6-1/2 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part...

  • Type FA Dzus Stud Fastener
    Add to Cart

    FA5-40 Dzus Stud - 5/16" Dia Stud .400 Length

    FA5-40 is a Dzus Type FA flush/countersunk head stud with a 5/16" body diameter and .400" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number:...

  • Type FA Dzus Stud Fastener
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    FA6-1/2-70 Dzus Stud - 13/32" Dia Stud .700 Length

    FA6-1/2-70 is a Dzus Type FA flush/countersunk head stud with a 13/32" body diameter and .700" length. Locks with a quarter-turn into a mating Type S6-1/2 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part...

  • Type FA Dzus Stud Fastener
    Add to Cart

    FA5-45 Dzus Stud - 5/16" Dia Stud .450 Length

    FA5-45 is a Dzus Type FA flush/countersunk head stud with a 5/16" body diameter and .450" length. Locks with a quarter-turn into a mating Type S5 spring. Used on cowlings, access panels, and engine covers on WWII and vintage aircraft.Part Number:...