×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Stainless Steel bolts

Stainless Steel bolts

Stainless Steel bolts

(OP)
Okay fellows, before you go home for the weekend, I need to know an equivillant SS bolt to ASTM A-325. I used to have it but I cannot get my finger on it.

Please let mek now if you know it.

Regards

RE: Stainless Steel bolts

Lutfi:

I've specified ASTM A-193, Grade B-8 in the past.  I believe this is equivalent to an A325 bolt.  I do not have my references at hand.

On another note:  Do you have a copy of your "hairpin paper" online anywhere?  If not, would you tell me how I can get a copy?

Regards

RE: Stainless Steel bolts

Not quite equivalent, but see page 2946 at http://www.mcmaster.com/

ASTM A193 Grade B8 Heavy Hex Head
Made of 18-8 stainless steel. Great for bolting pressure vessels, valves, flanges, and fittings. Rockwell hardness is B96. Minimum tensile strength: 75,000 psi. Length is measured from under head. Made in the USA.

This isn’t quite stainless, but surely more corrosion resistant than plain steel A325:
ASTM A193 Grade B7 Hex Head
Made of chromium-molybdenum alloy steel.  Ideal for bolting pressure vessels, valves, flanges, and fittings. Rockwell hardness is C28-C32. Tensile strength: 125,000 psi. Length ismeasured from under head. Made in the USA.

Cf page 2945:
ASTM A325 Heavy Hex Head
All bolts conform to ASTM A325 Type 1 for structural steel joints. Length is measured from under head. Rockwell hardness is C24-C35. For bolts 1/2_ through 1_ diameter, minimum tensile strength is 120,000 psi. For 11/8_ and 11/4_ diameter bolts, minimum tensile strength is 105,000 psi. Manufacturer and grade marked on top of head. Made in the USA or Canada.

Possibly of interest, on p. 2951
Ultra-Coated Grade 8 High-Strength Hex Head
A water-based inorganic coating, also known as armor coat, is applied to steel fasteners to provide better corrosion resistance than comparable hot dipped galvanized fasteners, and does not affect function of the thread. In addition, these screws are often effective replacements for stainless steel cap screws.  Salt spray resistance of 1000 hours per ASTM B117. Screws meet SAE J429. Rockwell hardness is C33-39 with a minimum tensile strength of 150,000 psi. Made of medium-carbon alloy steel that has been quenched and tempered. Screws are grade marked on top of head (six radial lines indicate Grade 8). Length is measured from under head. Screw has a clear-silver finish. For ultra-coated nuts see 93827A on page 2990; for washers, see 98180A on page 3017. Made in North America.

RE: Stainless Steel bolts

(OP)
Many thanks for the quick response.

Regarding the hairpin paper, it is not on line. I have a hard copy. If you give me your e-mail, i would pass it on to you.

Regards,
Lutfi

RE: Stainless Steel bolts

Lufti,

I would appreciate the hairpin paper also.  audeuce02@aol.com  Being a metal building engineer, maybe one day I can return the favor to you somehow.

RE: Stainless Steel bolts

You might check with your local Fastenal Company Rep.  They should be able to tell you the correct equivalent.  By the way, their fastener catalog has a lot of really useful information on all types of bolts, screws and anchors.

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!


Resources