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  • Users: chopper75
  • Content: Threads
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  1. chopper75

    Thread lubricant (preferably dry...)

    I have an application using an 8-32 Stainless screw into a stainless PEM insert. I'm getting a lot seized screws that I think are gauling from too much friction and pressure. I'd like to try reducing the friction with a lubricant. 1. The screw is inside a chassis with a lot of electronics...
  2. chopper75

    303 stainless screw in SOS-832

    I'm using a custom screw made of 303 stainless and screwing into a threaded insert made of "300 Series Stainless". Would this be a concern for gauling? if so, what would you guys recommend to compatible material? Thanks
  3. chopper75

    counter dimensions for MS24693-C24

    Does anyone have a good link to recommended countersink dimensions for 100deg flat head screws (MS24693)?
  4. chopper75

    A2 Stainless locknut with 303 stainless male thread.

    We are using a M10 locknut. The material is "A2" and the locking mechanism is a nylon ring at the end of the thread. Commonly called a "Nylock" in our area. The make thread that it is going on is 303 Stainless. Issue: severe gauling/seizing when we engage the locking mechanism. Question...
  5. chopper75

    rust-proofing tapped holes

    I have tapped holes 1/4-20 in steel that are getting rusty. Apparently the supplier cant Zn plate because they are blind and it's an air lock. One thought was to put stainless inserts. But is there a good product that can be applied to prevent rust?
  6. chopper75

    bonding "Santoprene"

    We are trying to bond some rubber trim to the edge of steel sheet (.06"thk) with VHB tape. The tape holds well to the steel but doesn't want to bond to the rubber. The material is "Santoprene". Could someone recommend a good bonding tape we could use?
  7. chopper75

    touching up "zinc Passivate"

    We have a part that calls up "Zinc Passivate" as a finish. The base material is 1018 steel. There was something wrong with the threads and we ran a tap in some of the threaded plated holes to get screws to fit. I'm assuming that this may have removed some or all plating? Is there anyway to...
  8. chopper75

    Dry film lubricant for Steel/Aluminum threaded joint

    I have a threaded joint that we are having problems with. The male thread is 304 Stainless and the hole is 6061-T6. thread is 8-32. We are starting to get some failures in the threads (gauling, aluminum shavings...). We continuously use the same steel thread and the aluminum part may see as much...
  9. chopper75

    Dry film lubricant for Aluminum/Stainless Steel threaded joint

    I have a threaded joint that we are having problems with. The male thread is 304 Stainless and the hole is 6061-T6. thread is 8-32. We are starting to get some failures in the threads (gauling, aluminum shavings...). We continuously use the same steel thread and the aluminum part may see as much...
  10. chopper75

    High Tensile Strength Plastic

    I am looking for a plastic with very high tensile strength for a threading application (8-32 thread). Can anyone recommend something?
  11. chopper75

    Locking patch for 4-40 screw

    We are using a locking patch on 4-40 stainless screws. The patch is applied by the supplier and has a prevailing torque as high as 5 in-lbs. I find that rather high for a 4-40 screws. We have had some situations where we would engage a few clean threads, hit the patch and strip the threads on...
  12. chopper75

    Static dissipative plastic used for fixturing ESD sensitive components

    I would like to use a 3D printed tray to hold SMT components that are ESD sensitive. The 3D printed material has the following specs and I'm wondering if it will be safe to use: Volume resistivity: 3.2 x 10exp11 ohm-cm Surface Resistivity: 3.2 x 10exp11 ohm dissipation Factor, 1 KHz: .177...
  13. chopper75

    T-Slotted Framing supplier

    Does anyone know a good site/supplier of T-Slotted framing? I've been looking at what Mcmaster has and I'd like to have some options before I start a design project.
  14. chopper75

    Bonding Duroid to aluminum using RTV

    I am trying to bond a piece of Duroid sheet to an aluminum surface. The Duroid is forced to a curved surface on the aluminum. I am pressing the Duroid sheet to match the aluminum's curved surface. It is being bonded with RTV (Momentive RTV88) and RTV Primer (Momentive SS4004P). After the 24 hour...
  15. chopper75

    Drafting template locations

    How do I redirect NX8.5 to a specific folder to find drafting templates?
  16. chopper75

    PCB Exchange NX 8.5

    I am trying to import circuit card files into NX using the PCB Exchange application. The log file looks like it is creating all the components. When import process completes, I get the bare PCB with holes only. The log file reports hundreds of messages like this one: "Adding component...
  17. chopper75

    Wear resistant bondable plastic film

    We are having issues with our product getting scratched when slid into a test tray. Can anyone recommend a wear resistant film? Preferably one that has an adhesive backing and release liner? Must operate -80C to +80C. Something under .010" would be good.
  18. chopper75

    Solid Edge .dft to NX

    Is there anyway to open Solid Edge .dft files in NX 8.5?
  19. chopper75

    BOM not updating

    I have a parts list with a row showing Item, Qty, and 2 other rows looking up the attributes "part number" and "description". When I created my parts list in drafting, I noticed a few items were not listed in the BOM. Sure enough, I didn't enter information in the file properties for "part...
  20. chopper75

    ROTATION A VIEW IN DRAFTING NX8.5

    I have made an auxilary view that is rotated at 30deg. I would like to rotate it so that it is sort of orthogonal so my dims will be horizontal and vertical as opposed to at 30 deg. How does one do that?

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