×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Screw Selection

Screw Selection

Screw Selection

(OP)
We have had an issue specing out our screws, washers, and other hardware. We do not want to have to create prints for everything. Is there one standard I can get that lists the all the specs for the different hardware?

RE: Screw Selection

btsmith,

   You ought to show your screws and washers on your assembly drawings and parts lists.  If you are creating specification control drawings, you can tabulate them.  If you create a list of approved fasteners, you save drafting time, and you simplify purchasing, warehousing and assembly.

   What is it you are trying to accomplish?

               JHG

RE: Screw Selection

(OP)
The goal is to ensure we are getting the same piece of hardware regardless of who we order it from. Past practice in our company was to create approved oems. Based on the quantities we purchase these oems tend to be distributors, we do not want to be locked into one single distributor.

RE: Screw Selection

drawoh,

   You need to prepare specification controls.  These provide a complete description of an off-the-shelf part that meets your requirements, and/or a list of approved manufacturers and part numbers.  If you can build a list of at least four different manufacturers, you should not have problems with availability.

   In the case of screws, you can provide MS or DIN numbers or any other standard that describe your part, and save you having to dimension everything.  

               JHG

RE: Screw Selection

Just my opinion but if you use mil spec hardware you will accomplish your goals. The only issue is that there are multiple specs you'd have to call out for a mish mash of hardware.

Tunalover

RE: Screw Selection

(OP)
Tunalover,
That was my initial thought as well, is there an Ansi, ASTM, Mil, or other document out there that gives all the specs for the different hardware. I also don't want to have to buy and maintain a whole pile of specs either. Thanks for all the suggestions.

RE: Screw Selection

btsmith-
There is a Reference Guide I use put out by APC Components, Inc. that shows pictures of hundreds of hardware items and the associated specs:
APC Components, Inc.
75 Toledo Street
PO Box 255
Farmingdale, NY  11735
(631) 249-4079

I would contact them and see what it takes to get the Reference Guide.  They are a manufacturer and distributor of
commercial, military, and electronic hardware.
  

Tunalover

RE: Screw Selection

Often times you can write your own global fastener specs to cover all your fasteners much easier than you'd think. We have an internal spec that basically says....
• All stainless hardware shall be 300 series
• All indoor steel fasteners shall be zinc plated Grade 5 or better
• All outdoor steel fasteners shall be galvanized Grade 8 or better
• Don't buy anything else

Then the Purchasing Dept knows it has to be one of those 3 types.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close