Metric - vs - SAE

1965-1971 Datsun 521 forums. All 520 and 521 topics and discussion can be found here.
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Li'l Truckie
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Car: 3 x '65 PL 320
1 x '64 PL 320
1 x '63 PL 320
1 x '62 PL 320 - parts :(
1 x '60 PLG-222
and many more Datsuns from 48hp to over 500hp
Location: Leavenworth, KS

Metric - vs - SAE

Postby Li'l Truckie » Tue Jan 21, 2014 1:13 pm

Hey there Datsun truck fans,

Looking to see what or rather confirm the nuts and bolts on the 520 and 521 are they SAE or Metric? Not looking for the fine print just overall Metric or SAE.

thanks
Li'l Truckie


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farmtruck
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Joined: Sat Feb 15, 2014 11:25 pm
Car: PL521

Re: Metric - vs - SAE

Postby farmtruck » Wed Feb 19, 2014 9:36 pm

Yes, all metric . That said the brake hard lines & fittings can sometimes throw ya a curve ball.
PL521 6 lug bolt pattern for wheels is the the same as Chevrolet/GMC 6 lug truck pattern.
That opens up a lot of possibilities when looking for taller/wider wheels in wrecking yards or classified ads or yard sales. Lug nuts & studs will be metric
14mm = 9/16"
19mm = 3/4"

User avatar
Li'l Truckie
Posts: 558
Joined: Thu Jan 02, 2014 9:28 am
Car: 3 x '65 PL 320
1 x '64 PL 320
1 x '63 PL 320
1 x '62 PL 320 - parts :(
1 x '60 PLG-222
and many more Datsuns from 48hp to over 500hp
Location: Leavenworth, KS

Re: Metric - vs - SAE

Postby Li'l Truckie » Thu Feb 20, 2014 4:32 am

Farmtruck,

Thanks for the info. I was tracking the 521 was all metric vis a few components remaining SAE, ie wheel cylinder diameter at 13/16 and the the brake and clutch master cylinder.

I thought the 520 might have remained SAE, but guess not.

thanks again and welcome aboard,

Li'l Truckie

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Charlie69
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Joined: Sat Nov 08, 2008 6:01 pm
Car: 1966 Datsun 520
Location: Tolleson AZ

Re: Metric - vs - SAE

Postby Charlie69 » Sat Aug 02, 2014 2:36 pm

Wrench sizes are metric however the threads are US fine thread.

timmyyyyyy
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Joined: Fri Sep 04, 2015 4:04 am
Car: Datsun 520.

Re: Metric - vs - SAE

Postby timmyyyyyy » Mon Oct 05, 2015 1:29 am

Not so sure about that... Lug nuts on my '68 520 are 7/16" UNC. Definitely not metric. Also some other bits on the car (clutch master cylinder bolts, brake fittings) are imperial.


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