Tamper-resistant fastener

Neidigk, Stephen; Wilson, Zachary Medaris

Title: Tamper-resistant fastener

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Abstract

A tamper-resistant threaded fastener including a circular head having a slot formed in the head transverse to the longitudinal axis, the slot having an enlarged region intermediate an apex and a base of the slot. A cap member includes a head having a drive feature formed therein, the head extending to a first shank portion, extending to an enlarged second shank portion, extending to a foot. The cap member is insertable in the slot only from a direction transverse to the longitudinal axis. During rotational installation of the fastener and cap member in a threaded counterbored opening for securing a barrier for protecting an asset, the foot shears inside the slot at a predetermined rotational drive force, the cap member being rotatable in the opening and protectively covering the fastener head.

Inventors:: Neidigk, Stephen; Wilson, Zachary Medaris

Issue Date:: 2021-04-06

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1823808

Patent Number(s):: 10968942

Application Number:: 16/166,463

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

DOE Contract Number:: NA0003525

Resource Type:: Patent

Resource Relation:: Patent File Date: 10/22/2018

Country of Publication:: United States

Language:: English

Citation Formats


                    Neidigk, Stephen, and Wilson, Zachary Medaris. Tamper-resistant fastener.  United States: N. p., 2021. 
        Web.

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                    Neidigk, Stephen, & Wilson, Zachary Medaris. Tamper-resistant fastener.  United States.

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                    Neidigk, Stephen, and Wilson, Zachary Medaris. Tue .  
        "Tamper-resistant fastener".  United States.  https://www.osti.gov/servlets/purl/1823808.

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@article{osti_1823808,

  title        = {Tamper-resistant fastener},

  author       = {Neidigk, Stephen and Wilson, Zachary Medaris},

  abstractNote = {A tamper-resistant threaded fastener including a circular head having a slot formed in the head transverse to the longitudinal axis, the slot having an enlarged region intermediate an apex and a base of the slot. A cap member includes a head having a drive feature formed therein, the head extending to a first shank portion, extending to an enlarged second shank portion, extending to a foot. The cap member is insertable in the slot only from a direction transverse to the longitudinal axis. During rotational installation of the fastener and cap member in a threaded counterbored opening for securing a barrier for protecting an asset, the foot shears inside the slot at a predetermined rotational drive force, the cap member being rotatable in the opening and protectively covering the fastener head.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2021},

  month        = {4}

}

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