Skip to main content
my account
email usour twitterour facebook page google plus youtube

If you know the exact part number, enter it in the search box. Most part numbers require an MS prefix (MS40S5-2S). If you are unsure of the part number, type the first 3 letters or numbers and put an * after it to broaden your search results. Or try our SITE MAP.


Aircraft fasteners cowling kits racing and 1/4 turn studs Made in USA

This website offers general information and easy access to our products. If you need detailed technical expertise, please contact our design team with specific requests.

C-Spec 4000 Series Fasteners - (Camloc® compatible)
C-Spec 4000 Series Fasteners - (Camloc® compatible)

The 4000 Series is the Modern Standard in Quick Release Fastening Systems. Compatible With Industry Standard Parts.

When using the 4000 series you will need 4 parts to make up the system. A stud, grommet, retainer, and receptacle. There are many options for each of these items as you will see. Selecting the proper components for your application is simple using the data tables provided on each component's page.

*The most important decision to make is to use a Fixed Depth receptacle or Adjustable Depth receptacle as this greatly affects the stud selection process.

When designing a new application it is best to select components from the inside out.

1.  Determine which Receptacle you want to use.
2.  Select the Grommet you wish to use.
3.  Select a Grommet Retainer (snap ring retained grommets only).
4.  Select a Stud Length (dash number) for the Total Material Thickness (TMT) being fastened. That is, all panels  together including gaskets and gaps (if used).

5.  Finally, select a Stud Head Style and Material.

Once you have determined all of the above and selected the components to be used, be sure to select the appropriate associated tooling which can be found here. Tool part number MS-4P3 (stud plier) is required for any installation. Other tools will be determined by the parts you select. If you have questions or are not sure which tools are required, just Contact Us. We will be happy to help.

  • Home
  • C-Spec 4000 Series Heavy Duty Fasteners (Camloc® Compatible)

Heavy Duty Stud Assemblies Available in Several Head Styles and Materials.

Heavy Duty Snap Ring Retained or Flare Type Grommets Available in Several Configurations and Materials.

Receptacles are the part that the studs lock into. Various styles are available to fit your specific requirements. Including Adjustable Depth or Fixed Depth designs.

Grommet retainers are simple snap rings that keep the grommet and fastener in the panel when unlocked. Various styles are available to fit your specific requirements.

Here you will find the tools required to prepare panels for and the installation of 4000 series C-Spec fasteners.

    About us

    We appreciate the support from everyone that uses Genuine MilSpec Products, and over the years it has been that support which has led to our growth. We will continue to work hard to provide fast, friendly and dependable service that will earn your trust in the future.

    MilSpec makes no claims regarding suitability of any item for any application. It is the responsibility of the purchaser, or installer to ensure proper usage and regulatory compliance.

    All content Copyright 1993 - 2017© MilSpec Products, Inc., All Rights Reserved. Trademarks® referenced are the property of their respective owners and do not indicate affiliation with MilSpec.

    Contact us
    email usour twitterour facebook page google plus youtube
    MilSpec Products
    31537 Long Acres Dr.
    Sorrento, FL 32776
    352-735-0504 (fax)
    Site Powered By
        Site Manager - Web site design and shopping carts software