The Ford Barn

1930artdeco · 08-17-2018, 12:41 PM

Hi All,

Getting to the point of installing seat belts in my 30 Townsedan. I have 7/16x3 bolts so far which I gleaned from Les Andrews book. But what bolts go in the back-size wise? I may even have to get longer bolts for the front depending on where and how I mount the front belts.

Mike

Gary WA · 08-18-2018, 10:47 AM

Good info in the Restorer-May-Jun 1993pg26-

Jim Brierley · 08-18-2018, 11:19 AM

Bolts should be good ones, grade 5 or 8. There should be a large flat washer and a lock washer on the other end of the bolts, they usually come with the seat belts.

1931 flamingo · 08-18-2018, 12:21 PM

When I installed belts in my '32 back in'61 I used 6" square 3/8 thick steel plates under the floor, NOT a flat washer, FWIW
Paul in CT

Jim Brierley · 08-19-2018, 10:19 AM

Plates like 1931 flamingo used are especially needed if the bolt will be going thru wood. On one of my cars I installed a 2"x2" angle iron inside the frame and bolted the belts to that. All body styles are not the same.

Bruce of MN · 08-20-2018, 04:28 AM

Sponsored Links (Register now to hide all advertisements)

This is the reinforcement from Lowes that I used in my '31 Coupe. The bar that fit nicely in the area , Gr 8 washers, nuts, and bolts.

BillEbob · 08-20-2018, 09:24 AM

Quote:

Originally Posted by Jim Brierley

Bolts should be good ones, grade 5 or 8. There should be a large flat washer and a lock washer on the other end of the bolts, they usually come with the seat belts.

DITTO! This is what I did in my '31 Vicky.

eagle · 08-20-2018, 10:44 PM

Proof load tensile strength on a 3/8 grade 5 bolt is 6600 lbs, grade 8 is 9300 lbs.

08-17-2018, 12:41 PM	#1
1930artdeco Senior Member Join Date: May 2010 Location: Lynden, Wa Posts: 3,552	seat belt fastern dimensions Hi All, Getting to the point of installing seat belts in my 30 Townsedan. I have 7/16x3 bolts so far which I gleaned from Les Andrews book. But what bolts go in the back-size wise? I may even have to get longer bolts for the front depending on where and how I mount the front belts. Mike __________________ 1930 TownSedan (Briggs) 1957 Country Sedan

08-18-2018, 11:19 AM	#3
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,088	Re: seat belt fastern dimensions Bolts should be good ones, grade 5 or 8. There should be a large flat washer and a lock washer on the other end of the bolts, they usually come with the seat belts.

08-18-2018, 12:21 PM	#4
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,390	Re: seat belt fastern dimensions When I installed belts in my '32 back in'61 I used 6" square 3/8 thick steel plates under the floor, NOT a flat washer, FWIW Paul in CT

08-19-2018, 10:19 AM	#5
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,088	Re: seat belt fastern dimensions Plates like 1931 flamingo used are especially needed if the bolt will be going thru wood. On one of my cars I installed a 2"x2" angle iron inside the frame and bolted the belts to that. All body styles are not the same.

08-20-2018, 04:28 AM	#6
Bruce of MN Senior Member Join Date: May 2010 Location: VA Posts: 1,410	Re: seat belt fastern dimensions Sponsored Links (Register now to hide all advertisements) This is the reinforcement from Lowes that I used in my '31 Coupe. The bar that fit nicely in the area , Gr 8 washers, nuts, and bolts.

08-20-2018, 10:44 PM	#8
eagle Senior Member Join Date: Aug 2011 Location: Eagle Bend, MN Posts: 2,025	Re: seat belt fastern dimensions Proof load tensile strength on a 3/8 grade 5 bolt is 6600 lbs, grade 8 is 9300 lbs. __________________ "There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool."