Bed wood nuts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sodly · 10-05-2013, 05:36 PM

Does anyone know why GM used square-head nuts on the metal strips that secure the wood in the bed? What's the rationale?

**TBONE1964** · 10-05-2013, 05:46 PM

All for assembly purposes. It is much easier for one person to go under the truck and tighten the nut rather than have someone on the top have to hold the bolt head with a wrench.

The problem is they are prone to twisting in the hole when they are rusty.

sodly · 10-05-2013, 06:39 PM

No, I think you misunderstand. Not the carriage-style square headed bolt on top. I'm talking about the little square nut on the bottom side. Why not use regular nuts under there?

**TBONE1964** · 10-05-2013, 06:48 PM

Ok, I understand what you are saying now. I have not personally had to deal with that type but if I know GM like I do, It has to do with cost savings. They most likely got a better deal on square head nuts from the vendor.

Of course I do not know this for a fact and hope someone else has a good answer.

sodly · 10-06-2013, 03:50 PM

Seems I've seen square nuts under other wood-floored trailers I worked with back in the day. Wonder if there's a reason for them. Do they bite differently into flat washers or something? Hmmm.

**aerotruk63** · 10-06-2013, 04:43 PM

Square nuts are cheaper to produce.

10-05-2013, 05:36 PM	#1
sodly Registered User Join Date: Nov 2009 Location: Nebraska Posts: 1,034	Bed wood nuts Does anyone know why GM used square-head nuts on the metal strips that secure the wood in the bed? What's the rationale? __________________ WANTED: * 60-66 Chevy and GMC FACTORY PHOTOGRAPHY (scans) of pickups and carryalls. *Custom Camper Club*-- Own a 65-66 Custom Camper? Join us at: http://67-72chevytrucks.com/vboard/g...hp?groupid=117

10-05-2013, 05:46 PM	#2
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Bed wood nuts All for assembly purposes. It is much easier for one person to go under the truck and tighten the nut rather than have someone on the top have to hold the bolt head with a wrench. The problem is they are prone to twisting in the hole when they are rusty. __________________ Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C

10-05-2013, 06:39 PM	#3
sodly Registered User Join Date: Nov 2009 Location: Nebraska Posts: 1,034	Re: Bed wood nuts No, I think you misunderstand. Not the carriage-style square headed bolt on top. I'm talking about the little square nut on the bottom side. Why not use regular nuts under there? __________________ WANTED: * 60-66 Chevy and GMC FACTORY PHOTOGRAPHY (scans) of pickups and carryalls. *Custom Camper Club*-- Own a 65-66 Custom Camper? Join us at: http://67-72chevytrucks.com/vboard/g...hp?groupid=117

10-05-2013, 06:48 PM	#4
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Bed wood nuts Ok, I understand what you are saying now. I have not personally had to deal with that type but if I know GM like I do, It has to do with cost savings. They most likely got a better deal on square head nuts from the vendor. Of course I do not know this for a fact and hope someone else has a good answer. __________________ Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C

10-06-2013, 03:50 PM	#5
sodly Registered User Join Date: Nov 2009 Location: Nebraska Posts: 1,034	Re: Bed wood nuts Seems I've seen square nuts under other wood-floored trailers I worked with back in the day. Wonder if there's a reason for them. Do they bite differently into flat washers or something? Hmmm. __________________ WANTED: * 60-66 Chevy and GMC FACTORY PHOTOGRAPHY (scans) of pickups and carryalls. *Custom Camper Club*-- Own a 65-66 Custom Camper? Join us at: http://67-72chevytrucks.com/vboard/g...hp?groupid=117

10-06-2013, 04:43 PM	#6
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: Bed wood nuts Square nuts are cheaper to produce. __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1



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