need large bolts

I've found up to 1" bolts in local hardware and auto parts stores.

jsw

Hardened allthread + nuts?

You don't have a local Fastenal outlet or a JD or other farm implement dealership?

Karl Townsend fired this volley in news: snipped-for-privacy@4ax.com:

If this is for the press, you'd be better off spending the bucks.

You need Grade 8 UN-plated screws to meet the full shear specs.

LLoyd

I have some 5/8 bolts for sale dirt cheap.

i

I used to buy at Ababba Bolt in SoCal. Fastener distributors are always a whole bundle cheaper than local hardware stores. Lowes, HD, and Menards wouud have scared you, too.

Call a local fastener store, Karl.

In building my CNC router, I bought some 5mm x 12mm x 0.8 pitch bolts at the local ACE Hardware. They were $0.35 each! Allen head cap screws were over a buck apiece. I just about shit. I hope to be done with the router build this week, then paint it the next. Rustoleum Deep Green Hammered, a modified alkyd.

My buddy told me to call Sasco and they shipped a box of 100 of the allen head cap screws to the local store, where I picked them up for a total of $5.85. Savings: 600+ percent. I returned the unused Ace hardware.

doesn't have a catalog online, but they can be reached at:

Call Mon. through Fri. 7:30 AM - 4:00 PM PST Phone: (800) 779-2024 Email: snipped-for-privacy@sascofasteners.com

P.S: You didn't say what grade or finish. It can make a big difference in price. F'rinstance, zinc chromate is 1/2 the price of micronized galv, and 1/3 the price of hot-dipped galv.

-- Believe nothing. No matter where you read it, Or who said it, Even if I have said it, Unless it agrees with your own reason And your own common sense. -- Buddha

McMaster carries threaded rod in grades B7 and 8. B7 is not awfully expensive, made from 4140 @ 125ksi, and nice to machine.

For a press frame made from typical structural shapes the bearing area of the fasteners in their holes may be more important than the shear strength of the fasteners themselves.

Ned Simmons fired this volley in news: snipped-for-privacy@4ax.com:

Yep. And that 1/4" web and flange thickness won't take much. That's why he's spec'ing so many fasteners.

But he also has to deal with the precision of location of all the holes. If they don't _all_ bear on _all_ the fasteners at the same time, he's got the same issues as if he hadn't used as many to start with.

That's why I weld and taper-pin my presses. I use blocking to vary the throat depth.

The only reason I mentioned unplated hardware is because sometimes (often) the plated ones suffer from hydrogen embrittlement.

LLoyd

If you have 10" long grade 5 or 8, I could use a dozen.

Karl

I'l check them out, Mcmaster and fastenall are $8+ each. I had planned on a dozen.

Karl

I have a lot of 5/8, 8 inches long threaded rods.

i

I'm using my CNC to drill the holes, spot then drill. Should be pretty damned accurate. The vertical holes is in the base of the flange, about 1/2 inch thick. I'm welding another plate in the horizontal pin location on each end to make it 1/2 inch thick also.

I seen 3/4 by 10 inch bolts at fleet farm didn't realize they only had grade 2 (butter bolts). never dreamed it would be over $100 for a dozen bolts. And then I was going to use 10 inch ones on the hydroulic ram base too. Need to rethink that design.

Karl

Right now, I'm wading through piles of chips in the shop.

story of my life, too short.

I could use a supply for the future. Shoot me a price on a large USPS flat rate box filled with 5/8 bolts. Hope you have a range on lengths, not all one size. karltownsendembarqmail.com

If it's for the press, how about 3/4" 1144 Stressproof threaded on the ends and full diameter within the frame holes?

jsw

Hey Karl,

Any reason you can't use threaded rod?/ (Ready Rod)

Brian Lawson, Bothwell, Ontario.

I have some new yellow 4 inch 5/8 bolts, and some threaded rod.

PMFRB of threaded rod is $30 plus $12 for shipping.

PMFRB of yellow 4" bolts (would be half full) is also $30. Should be about 70 bolts. They have a hex flange head. McMaster has them for $2, they are grade 8.

i

On Wed, 25 Apr 2012 11:50:24 -0500, Karl Townsend wrote: ...

There are some lower prices online but shipping might make the difference.

3/4-10 x 10", plain, $69.64 box of 10

3/4-16 x 10", plated, $6.84 each at q. 20

3/4-16 x 10", plain, $14.65 each q. 1 7/8-14 X 10", plain, $13.17 each q. 1

Copperstate Bolt or Fastenal.

(Some Fastenal stores only sell in full box quantities.)

Would you settle on hardened rod? Grind snap-ring grooves, or just leave them plain. These are for holding the adjustable bottom of the press, the apron? What are the other ten for? Holding the top arbor, the jack plates, and feet? That gets us to 8. Curiouser and curiouser.

My buddy Glenn took an HF press and upgraded it. He welded the front and rear C-beams together so they made a liftable apron module, added a hand crank winch on top which is cabled to both ends of the apron, and uses straight hardened rods (with a bolts welded on the front to keep them from slipping through the back) for the support bolts. AOH makes it faster, too.

Weld the top and bottom together and you remove the need for all those bolts.

-- Believe nothing. No matter where you read it, Or who said it, Even if I have said it, Unless it agrees with your own reason And your own common sense. -- Buddha