Stainless bumper bolts non-capped - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Warrens69GMC** · 11-07-2023, 11:29 PM

Anyone have a source of non-capped bumper bolts?

Extended Power · 11-07-2023, 11:48 PM

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

You could try McMasters for the stainless bumper bolts. Just a thought.

**1970cstblazer** · 11-08-2023, 08:24 AM

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:

Joyridin · 11-08-2023, 08:26 AM

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.

72c20customcamper · 11-08-2023, 09:27 AM

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

**Warrens69GMC** · 11-08-2023, 10:55 AM

Not looking for original, just want something to look good and not rust.

Orange Crate · 11-08-2023, 11:54 AM

The Truck Shop in Orange CA has these two available.

**Jason Banks** · 11-08-2023, 12:11 PM

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/

LS short box · 11-08-2023, 05:38 PM

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.

Orange Crate · 11-10-2023, 06:02 PM

Quote:

Originally Posted by LS short box

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.

**Jason Banks** · 11-08-2023, 06:02 PM

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.

**1970cstblazer** · 11-09-2023, 08:48 AM

**1970cstblazer** · 11-09-2023, 08:50 AM

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.

Extended Power · 11-10-2023, 10:49 AM

Quote:

Originally Posted by 1970cstblazer

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?

**1970cstblazer** · 11-10-2023, 12:17 PM

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.

indymachinist · 11-10-2023, 06:58 PM

Quote:

Originally Posted by 1970cstblazer

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.

**dmjlambert** · 11-10-2023, 06:22 PM

What does non-capped mean?

**pjmoreland** · 11-10-2023, 06:37 PM

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".

**Warrens69GMC** · 11-10-2023, 09:57 PM

Quote:

Originally Posted by pjmoreland

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.

**dmjlambert** · 11-11-2023, 12:26 AM

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?

**Warrens69GMC** · 11-11-2023, 05:53 AM

Quote:

Originally Posted by dmjlambert

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.

MS66 · 11-11-2023, 05:59 AM

Quote:

Originally Posted by dmjlambert

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.

72c20customcamper · 11-11-2023, 08:06 PM

Quote:

Originally Posted by MS66

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

MS66 · 11-11-2023, 11:03 PM

Quote:

Originally Posted by 72c20customcamper

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.

**Warrens69GMC** · 11-11-2023, 06:25 PM

ordered a generic high dome kit. Thank you all.

11-07-2023, 11:29 PM	#1
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,626	Stainless bumper bolts non-capped Anyone have a source of non-capped bumper bolts? __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT

11-07-2023, 11:48 PM	#2
Extended Power Registered User Join Date: Dec 2022 Location: Redcliff, Alberta Posts: 238	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. __________________ "If it ain't broken, fix it 'till it is!"

11-08-2023, 08:24 AM	#3
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,100	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: __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark 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, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels Last edited by 1970cstblazer; 11-08-2023 at 08:38 AM.

11-08-2023, 08:26 AM	#4
Joyridin Registered User Join Date: Sep 2020 Location: Cleveland, Ohio Posts: 573	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.

11-08-2023, 09:27 AM	#5
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,927	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 Attached Images __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

11-08-2023, 10:55 AM	#6
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,626	Re: Stainless bumper bolts non-capped Not looking for original, just want something to look good and not rust. __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT

11-08-2023, 11:54 AM	#7
Orange Crate Registered User Join Date: Feb 2011 Location: Under the Truck Dreaming Posts: 795	Re: Stainless bumper bolts non-capped The Truck Shop in Orange CA has these two available. Attached Images __________________ 72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...and a 5 speed

11-08-2023, 12:11 PM	#8
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,670	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/

11-08-2023, 05:38 PM	#9
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 2,212	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.

11-08-2023, 06:02 PM	#11
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,670	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.

11-09-2023, 08:48 AM	#12
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,100	Re: Stainless bumper bolts non-capped __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark 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, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

11-09-2023, 08:50 AM	#13
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,100	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. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark 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, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

11-10-2023, 12:17 PM	#15
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,100	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. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark 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, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

11-10-2023, 06:22 PM	#17
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,948	Re: Stainless bumper bolts non-capped What does non-capped mean?

11-10-2023, 06:37 PM	#18
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 6,248	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". Attached Images



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11-11-2023, 12:26 AM	#20
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,948	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?

11-11-2023, 06:25 PM	#25
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,626	Re: Stainless bumper bolts non-capped ordered a generic high dome kit. Thank you all. __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT

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