Selecting small rivet size - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**dmjlambert** · 10-06-2020, 10:33 PM

I'm working on my A/C evaporator box. I drilled out the rivets. The work thickness is 1/4 inch, the work hole diameter is 5/32 inch, the old rivet is 1/8 inch thick with a very thin and flat head. What is the proper rivet to use? I don't know what length to pick that will ensure the tube will curl and flatten nicely and properly hold. Can you help pick rivets or does anybody here have some that are proper?

The rivets GMC Paul sent me for my vent window rubber replacement job were too long for some parts of the vent window. The solid part of the rivet was too long and no matter how much I pressed and hammered the rivet it would not hold snug. I had to drill the tube part of the rivet to be deeper. I don't want to do that with whatever rivets I pick for this. Do I need to go 1/8 inch longer than the work thickness for the rivet length, or is there another number?

I need to find about a dozen rivets for this. I still have the special punch from GMC Pauls, or I was thinking of getting one of those Corvette Aero-rivet tools or borrowing one from one of you fine folks. I don't like pop rivets. #8 or #6 1/2 inch long machine screws with an extremely thin head would also work, but not having great luck finding something with a head about as thick as a rivet head.

**Getter-Done** · 10-06-2020, 10:58 PM

I Have just went down this road .
It was with another project.

Shoulder / length and diameter all play the roll.

.

RustyPile · 10-06-2020, 11:47 PM

I've used pan head machine screws in place of rivets on several occasions.. Most Ace Hardware stores stock a comprehensive selection of pan head screws..

67C10Step · 10-07-2020, 08:42 AM

Quote:

Originally Posted by RustyPile

I've used pan head machine screws in place of rivets on several occasions.. Most Ace Hardware stores stock a comprehensive selection of pan head screws..

This is what I did on my fresh air vent rebuild. Could not find any rivets that I though would look right that small so went with some very small pan head machine screws.

I'll be doing a heater box rebuild over the winter so I'll be going down this road again soon.

72c20customcamper · 10-07-2020, 02:24 PM

I keep several bags of these . Look like rivits but bolt in used for the grill on my 66 SS Chevelle

**dmjlambert** · 10-11-2020, 03:55 PM

OK I looked for rivets and bought some, but I was not able to find the right size. I got tired of messing with that, so bought some stainless steel #6 screws and nyloc nuts. Thanks for the input on this thread.

10-06-2020, 10:33 PM	#1
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,563	Selecting small rivet size I'm working on my A/C evaporator box. I drilled out the rivets. The work thickness is 1/4 inch, the work hole diameter is 5/32 inch, the old rivet is 1/8 inch thick with a very thin and flat head. What is the proper rivet to use? I don't know what length to pick that will ensure the tube will curl and flatten nicely and properly hold. Can you help pick rivets or does anybody here have some that are proper? The rivets GMC Paul sent me for my vent window rubber replacement job were too long for some parts of the vent window. The solid part of the rivet was too long and no matter how much I pressed and hammered the rivet it would not hold snug. I had to drill the tube part of the rivet to be deeper. I don't want to do that with whatever rivets I pick for this. Do I need to go 1/8 inch longer than the work thickness for the rivet length, or is there another number? I need to find about a dozen rivets for this. I still have the special punch from GMC Pauls, or I was thinking of getting one of those Corvette Aero-rivet tools or borrowing one from one of you fine folks. I don't like pop rivets. #8 or #6 1/2 inch long machine screws with an extremely thin head would also work, but not having great luck finding something with a head about as thick as a rivet head. Attached Images

10-06-2020, 10:58 PM	#2
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,724	Re: Selecting small rivet size I Have just went down this road . It was with another project. Shoulder / length and diameter all play the roll. . __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

10-06-2020, 11:47 PM	#3
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 1,531	Re: Selecting small rivet size I've used pan head machine screws in place of rivets on several occasions.. Most Ace Hardware stores stock a comprehensive selection of pan head screws..

10-07-2020, 02:24 PM	#5
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,141	Re: Selecting small rivet size I keep several bags of these . Look like rivits but bolt in used for the grill on my 66 SS Chevelle 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.

10-11-2020, 03:55 PM	#6
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,563	Re: Selecting small rivet size OK I looked for rivets and bought some, but I was not able to find the right size. I got tired of messing with that, so bought some stainless steel #6 screws and nyloc nuts. Thanks for the input on this thread.



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