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Old 11-07-2023, 11:29 PM   #1
Warrens69GMC
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Stainless bumper bolts non-capped

Anyone have a source of non-capped bumper bolts?
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Old 11-07-2023, 11:48 PM   #2
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Re: Stainless bumper bolts non-capped

I’d like to do a “no mounting bolts” bumper.

You could try McMasters for the stainless bumper bolts. Just a thought.
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Old 11-08-2023, 08:24 AM   #3
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Lightbulb Re: Stainless bumper bolts non-capped

Most of the resto parts houses sell these. I've seen them plain and fully chromed. Unfortunately, these are the best out there, since the hi-dome bumper bolts widely available now are not stainless steel capped like original.



Painted:

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1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress...

1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...

2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

Last edited by 1970cstblazer; 11-08-2023 at 08:38 AM.
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Old 11-08-2023, 08:26 AM   #4
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Re: Stainless bumper bolts non-capped

I am pretty sure I bought mine off Ebay. I went back and looked and see I have 7/16-14 x 1-1/4" stainless carriage bolts on my previously purchased list. I buffed them up a bit to make them pretty, but that was all.
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Old 11-08-2023, 09:27 AM   #5
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Re: Stainless bumper bolts non-capped

I bought Stainless steel carriage bolts at ACE hardware sanded and polished them . If your looking for original then the aftermarket vendors are about your only option
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Old 11-08-2023, 10:55 AM   #6
Warrens69GMC
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Re: Stainless bumper bolts non-capped

Not looking for original, just want something to look good and not rust.
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Old 11-08-2023, 11:54 AM   #7
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Re: Stainless bumper bolts non-capped

The Truck Shop in Orange CA has these two available.
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Old 11-08-2023, 12:11 PM   #8
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Re: Stainless bumper bolts non-capped

The ones 1970cstblazer pictures are the best I have found. They look exactly like the ones at the top of Orange Crate's picture.

I came to suggest these, which are the same:
https://www.summitracing.com/parts/gmk-4140001471

Or the Keyparts BBC4787
https://www.ebay.com/itm/114169817645

Or Wes a Classic Heartbeat:
https://www.classicheartbeat.com/pro...mper-bolt-kit/
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Old 11-08-2023, 05:38 PM   #9
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Re: Stainless bumper bolts non-capped

Just a note on bumpers and bolts. I always use an over size washer between the bumper and the bumper bracket. The washer reduces the chance of you dimpling the bumper as you tighten the bumper bolt.
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Old 11-08-2023, 06:02 PM   #10
Jason Banks
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Re: Stainless bumper bolts non-capped

LS Short Box. That's the truth.... go look at the rear bumper on this truck on Bring A Trailer - https://bringatrailer.com/listing/19...10-pickup-116/

They wrecked that rear bumper.
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Old 11-09-2023, 08:48 AM   #11
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Re: Stainless bumper bolts non-capped

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1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress...

1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...

2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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Old 11-09-2023, 08:50 AM   #12
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Lightbulb Re: Stainless bumper bolts non-capped

Bumper bolts are a pet peeve of mine. It sets the tone for the entire truck. Using the right design of these shows attention to detail, plus they look a whole lot better than the flat generic bolts that are over-used.
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1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress...

1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...

2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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Old 11-10-2023, 10:49 AM   #13
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Re: Stainless bumper bolts non-capped

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Originally Posted by 1970cstblazer View Post
Bumper bolts are a pet peeve of mine. It sets the tone for the entire truck. Using the right design of these shows attention to detail, plus they look a whole lot better than the flat generic bolts that are over-used.
What are flat generic bolts?
Are you referring to finishing bolts and washers?
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Old 11-10-2023, 12:17 PM   #14
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Wink Re: Stainless bumper bolts non-capped

If you compare common bumper bolts with the original style, the original has a much steeper profile, or "high dome" design. They are easy to see from 50 feet away.
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1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress...

1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...

2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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Old 11-10-2023, 06:02 PM   #15
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Re: Stainless bumper bolts non-capped

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Originally Posted by LS short box View Post
Just a note on bumpers and bolts. I always use an over size washer between the bumper and the bumper bracket. The washer reduces the chance of you dimpling the bumper as you tighten the bumper bolt.
Hey, thanks for this. I have yet to install my bumpers for the last time. I have had them on for fitting and alignment but have had both off again for other things (front Hickey winch, bracket painting ect). I appreciate the heads up.
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Old 11-10-2023, 06:22 PM   #16
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Re: Stainless bumper bolts non-capped

What does non-capped mean?
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Old 11-10-2023, 06:37 PM   #17
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Re: Stainless bumper bolts non-capped

The original bumper bolts were made of regular carbon steel and had a stainless "cap" formed onto the head. It could be that this isn't what Warrens69GMC was referring to though. The term "cap" is also used in technical fastener lingo to refer to the head of the bolt, such as "Socket Head Cap Screw".
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Old 11-10-2023, 06:58 PM   #18
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Re: Stainless bumper bolts non-capped

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Originally Posted by 1970cstblazer View Post
Bumper bolts are a pet peeve of mine. It sets the tone for the entire truck. Using the right design of these shows attention to detail, plus they look a whole lot better than the flat generic bolts that are over-used.
Matter of opinion I guess. I do not like those high dome bolts.
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Old 11-10-2023, 09:57 PM   #19
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Re: Stainless bumper bolts non-capped

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The original bumper bolts were made of regular carbon steel and had a stainless "cap" formed onto the head. It could be that this isn't what Warrens69GMC was referring to though.
That's exactly what I was referring to. I have new painted bumpers, and was thinking of new bolts as i had to cut my old ones off. In the future, I would like to get chrome bumpers, then polish the stainless.
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Old 11-11-2023, 12:26 AM   #20
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Re: Stainless bumper bolts non-capped

Then I'm confused about why you wouldn't want them to be capped, because that is the stainless part. Wouldn't you want to make sure they are capped with stainless steel?
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Old 11-11-2023, 05:53 AM   #21
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Re: Stainless bumper bolts non-capped

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Then I'm confused about why you wouldn't want them to be capped, because that is the stainless part. Wouldn't you want to make sure they are capped with stainless steel?
Ones I have sold while at the parts store felt cheap and the bolts themselves would rust as the main bolt were just steel.
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Old 11-11-2023, 05:59 AM   #22
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Re: Stainless bumper bolts non-capped

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Then I'm confused about why you wouldn't want them to be capped, because that is the stainless part. Wouldn't you want to make sure they are capped with stainless steel?
He doesn't want the capped style carbon steel bolts. He wants a full SS bolt to keep from possibly having to cut rusty steel bolts off again.
72C20 shows a full SS carriage bolt that he picks up from Ace hardware, then polishes the head. When going back together I use anti seize on all bumper bolts, regardless of steel type.
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Old 11-11-2023, 06:25 PM   #23
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Re: Stainless bumper bolts non-capped

ordered a generic high dome kit. Thank you all.
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Old 11-11-2023, 08:06 PM   #24
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Re: Stainless bumper bolts non-capped

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He doesn't want the capped style carbon steel bolts. He wants a full SS bolt to keep from possibly having to cut rusty steel bolts off again.
72C20 shows a full SS carriage bolt that he picks up from Ace hardware, then polishes the head. When going back together I use anti seize on all bumper bolts, regardless of steel type.
100 % stainless as are the washers lock washers and nuts . I always use anti seize on SS . And compared to the kits out there these are cheap
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Old 11-11-2023, 11:03 PM   #25
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Re: Stainless bumper bolts non-capped

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100 % stainless as are the washers lock washers and nuts . I always use anti seize on SS . And compared to the kits out there these are cheap
I agree. Look good.
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