Honda and Acura Technical Forums

Bense · 02-05-2007, 01:30 PM

I'm putting this in here cause it sees the most traffic, but it does pertain to civics, (as well as all hondas) I can't beileve there's not one of these threads already that's stickied.

Please help me fill in the blanks and or correct me if I'm wrong. Honda uses some weird sizes. I had to specially order a M14-1.5 nut for example. Also, do they all tend to share the same thread pitch? I see M12-1.25 and M12-1.5. I searched for "thread" and got 750 results, I'm not about to sort through 750 threads. I searched for "thread pitch" and it returned 97 results, most of them pertained to specific bolts

See this guys post:
http://honda-tech.com/zerothre...54427

M6-1.0 --- common (most of our 10mm head bolts)
M8-1.25 -- common (probably most of our 12mm head bolts)
M10-1.25 - some headbolts) (probably most of our 14mm head bolts)
M11-1.25 - freakshow timing belt tensioner on H/F engines. 7/16-20 is VERY close.
M11x1.5 -- some headbolts)
M12x1.0 -- flywheel bolts + shift fork ball spring bolts)
M12-1.25 - common (probably most of our 17mm head bolts)
M12-1.5 -- lugnuts)
M14-1.25 - crank bolt?)
M14-1.5 -- oil pan drain plug. 19mm head bolt that connects rear trans bracket to trans
M16-???
M20x1.0 -- 10mm allen bolt
M20x1.5 (oil filter threads????)
M22x??? d-series countershaft nut
M28x1.5 - 14mm allen bolt

Quote:

Originally Posted by dfoxengr

M18x1.5 is the O2 sensor bung
1/8 BSPT is the oil pressure sensor threads

Also, if it's an unusual thread, like the oil filter for example, Please put it like this
M20x1.5 (oil filter threads)

Quote:

Originally Posted by Eran

Because I'm down there right now ....

Front LCA Bolts:

Subframe flange bolt: 14x1.5mm
Bushing bracket flange bolt: 14x1.5mm
Bushing nut: 14x1.5mm
Shock fork lower bolt: 12x1.25mm
Shock fork upper bolt: 10x1.25mm
Swaybar endlink nuts: 8x1.25mm
Swaybar bushing bolts: 8x1.25mm

Thanks in advance.

last edited on 3/6/07 16:12 EST

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BlueIntegraBoy · 02-05-2007, 01:40 PM

M12 x 1.25 - rear inner seat rail bolt

Taimaishui14 · 02-05-2007, 01:48 PM

I have no clue about any of the bolts, considering this is my first Honda, and I've only had it about 2 months. However this could come in real handy, sticky please?

Brick Top · 02-05-2007, 02:30 PM

D-series head stud thread: M10x1.25

B-series head stud thread: M11x1.5

Bense · 02-05-2007, 04:47 PM

Bense · 02-05-2007, 07:00 PM

rad

confucioussae · 02-05-2007, 07:05 PM

i don't know if this thread is relevant to what you're trying to accomplish, but it's definitely some info that might help some people looking for

a few TURBO thread pitches
http://www.honda-tech.com/zerothread?id=373905

Eran · 02-05-2007, 07:18 PM

Common:
M10x1.5 - Shifter (for all you poor saps that need a locknut for your Type-R knob)

Bense · 02-06-2007, 11:46 AM

up for more

mike1114 · 02-06-2007, 12:50 PM

bense...your correct....oil pan 14X1.5

RedEj8 · 02-06-2007, 01:07 PM

anyone know the thread pitch of the bolts that hold down the cam caps on a b-series?

ReDemoN · 02-06-2007, 01:36 PM

Actually the most common 10mm bolt is 6mm thread pitch.
On a 92-95 anyway.
I use that size chaser the most.

Bense · 02-06-2007, 02:59 PM

Quote:

Originally Posted by ReDemoN

Actually the most common 10mm bolt is 6mm thread pitch.
On a 92-95 anyway.
I use that size chaser the most.

you caught me before I could edit it

I believe that most of our M8-1.25 bolts are what we use the 12mm sockets for. However most of the nuts/bolts that we buy in conventional hardware stores that are M8-1.25 use 13mm heads. I just need to verify that 1.25 is the common thread pitch.

Bense · 02-06-2007, 03:00 PM

keep em coming guys

RedEj8 · 02-06-2007, 07:11 PM

.

Bense · 02-07-2007, 05:58 AM

m8-1.25 is our common honda bolt with the 12mm head

Luserkid · 02-07-2007, 07:00 AM

I cant remember them off the top of my head and dont have the time right now but when i get home from class ill look some up. Cause there are "custom" ones for special things (like LS/VTEC, oil spuirters, etc). Those use a NPT thread to cover or tap. But when i get home ill check it.

Also i believe the crank pully is the M16 x .5 pitch and the flywheels are 14 x .5 But dont quote me just yet ill be back for for sures if no one checked it.

Bense · 02-08-2007, 02:20 PM

thanks Luserkid

Luserkid · 02-09-2007, 12:00 PM

Sorry i lagged but schools been killer. Heres some not so common thread pitches that hondas have and if you ever screw them up is hard to find, so it better to have the correct pitch numbers then send out a stripped bolt asking "can you figure out the thread pitch"

Flywheel bolts (B and D the same, dont know about H and K): M12 x 1.0
Pressure Plate bolts (same b and d dont know about h and k): M8 x 1.25
Oil pan/Trans drain plug: M14 x 1.5
Trans case bolts that hold that little ball bearing in place with spring: M12 x 1.0 (oddly enough this is a hard tap to find, and timesert hasnt even made an insert for it yet so dont screw this one up)
Oil Pressure Sensor (back of block): 1/8 - 28BSP
Bumper screw/bolts: M6 x 1.0
Crank Bolt: M14 x 1.25
14mm Allen Bolt: M28 x 1.5
10mm Allen Bolt: M20 x 1.0
19mm bolt that connects rear trans bracket to trans: M14 x 1.5

If theres any other bolts that people would like to know let me know and ill get you the pitch.

Bense · 02-11-2007, 09:57 AM

thanks for the post Luserkid

JerseySiPOS · 02-11-2007, 01:53 PM

m16 is for the thermoswitch, under the water pipe. i never tried a crank pulley bolt to see if it fits.

JCracer723 · 02-23-2007, 12:06 PM

sticky this

02-23-2007, 12:56 PM

Would anyone happen to know the specs on the hood hinge bolts? Im going to be machining up a few hood spacers, and would like to know this. Thanks!

JCracer723 · 02-23-2007, 01:21 PM

Quote:

Originally Posted by vestalfootball72

Would anyone happen to know the specs on the hood hinge bolts? Im going to be machining up a few hood spacers, and would like to know this. Thanks!

im thinking:
M8-1.25 (common) (probably most of our 12mm head bolts)

allricedout · 02-23-2007, 01:28 PM

exhaust header/ cat studs... i cant remember M12x 1.25?

02-05-2007, 01:40 PM	#2
BlueIntegraBoy Senior Member 1998 Acura Integra Join Date: Apr 2003 Location: H I L O, H I Posts: 22,137	Re: Common Honda Bolt thread pitch size dimension (Bense) M12 x 1.25 - rear inner seat rail bolt __________________ インテグラタイプR 98-0425

02-05-2007, 02:30 PM	#4
Brick Top Member Join Date: Oct 2004 Location: cincinnati Posts: 1,646	Re: (Taimaishui14) D-series head stud thread: M10x1.25 B-series head stud thread: M11x1.5 __________________ MR EJ7 / LS Vtec 190whp / 123wtq 13.4@101 Blundell Tuned

02-05-2007, 04:47 PM	#5
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	__________________ http://people.clemson.edu/~ABense

02-05-2007, 07:00 PM	#6
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	rad __________________ http://people.clemson.edu/~ABense

02-05-2007, 07:05 PM	#7
confucioussae Member Join Date: Apr 2005 Location: socal OC Posts: 2,834	Re: Common Honda Bolt thread pitch size dimension (Bense) i don't know if this thread is relevant to what you're trying to accomplish, but it's definitely some info that might help some people looking for a few TURBO thread pitches http://www.honda-tech.com/zerothread?id=373905

02-05-2007, 01:48 PM	#3
Taimaishui14 Junior Member Join Date: Sep 2006 Location: MI, USA Posts: 98	I have no clue about any of the bolts, considering this is my first Honda, and I've only had it about 2 months. However this could come in real handy, sticky please?

02-05-2007, 07:18 PM	#8
Eran HT White Ops Join Date: Mar 2006 Location: Ness abandoned the cookie. Posts: 14,247	Common: M10x1.5 - Shifter (for all you poor saps that need a locknut for your Type-R knob) __________________ Jason -- 97 VSM del Sol <2WAYPARADISE> Proclivity to Hatership [ Flickr. ][ anti\|hero ][ dSoc ]

02-06-2007, 11:46 AM	#9
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	Re: Common Honda Bolt thread pitch size dimension (Bense) up for more __________________ http://people.clemson.edu/~ABense

02-06-2007, 12:50 PM	#10
mike1114 Member Join Date: Mar 2003 Location: I drink Seafoam and poo into catch cans, USA Posts: 3,213	Re: Common Honda Bolt thread pitch size dimension (Bense) bense...your correct....oil pan 14X1.5

02-06-2007, 01:07 PM	#11
RedEj8 Member Join Date: May 2005 Location: Macon, GA, U.S. Posts: 1,325	Re: Common Honda Bolt thread pitch size dimension (mike1114) anyone know the thread pitch of the bolts that hold down the cam caps on a b-series? __________________ Poormans R- EJ8 EJ8 Squad #261

02-06-2007, 01:36 PM	#12
ReDemoN Member Join Date: Apr 2004 Location: Tifton, GA, USA Posts: 1,798	Re: Common Honda Bolt thread pitch size dimension (RedEj8) Actually the most common 10mm bolt is 6mm thread pitch. On a 92-95 anyway. I use that size chaser the most. __________________ SOHC-T Fun Times Come join us at Crunk Times!! http://crunktimes.com/ct/index.php?referrerid=116

02-06-2007, 03:00 PM	#14
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	keep em coming guys __________________ http://people.clemson.edu/~ABense

02-06-2007, 07:11 PM	#15
RedEj8 Member Join Date: May 2005 Location: Macon, GA, U.S. Posts: 1,325	Re: (Bense) . __________________ Poormans R- EJ8 EJ8 Squad #261

02-07-2007, 05:58 AM	#16
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	m8-1.25 is our common honda bolt with the 12mm head __________________ http://people.clemson.edu/~ABense

02-07-2007, 07:00 AM	#17
Luserkid Senior Member Join Date: Oct 2002 Location: Cali Posts: 12,338	Re: (Bense) I cant remember them off the top of my head and dont have the time right now but when i get home from class ill look some up. Cause there are "custom" ones for special things (like LS/VTEC, oil spuirters, etc). Those use a NPT thread to cover or tap. But when i get home ill check it. Also i believe the crank pully is the M16 x .5 pitch and the flywheels are 14 x .5 But dont quote me just yet ill be back for for sures if no one checked it. __________________ 93 B18C-<FONT COLOR="red">T</FONT> DX coupe <FONT SIZE="2"><FONT COLOR="red">Janer Performance</FONT></FONT> <FONT COLOR="blue">-Engine Building-</FONT> -Turbo Install- <FONT COLOR="green">-General Mechanic-</FONT> -We Sell BDL http://images.honda-tech.com/set1/smile/emthup.gif - PM for good deals. http://images.honda-tech.com/set1/smile/emthup.gif Vouch Custom Clutch Lines RIP Earl Laskey 12.1.06 You will be missed! http://images.honda-tech.com/set1/smile/emsad.gif

02-08-2007, 02:20 PM	#18
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	thanks Luserkid __________________ http://people.clemson.edu/~ABense

02-09-2007, 12:00 PM	#19
Luserkid Senior Member Join Date: Oct 2002 Location: Cali Posts: 12,338	Re: (Bense) Sorry i lagged but schools been killer. Heres some not so common thread pitches that hondas have and if you ever screw them up is hard to find, so it better to have the correct pitch numbers then send out a stripped bolt asking "can you figure out the thread pitch" Flywheel bolts (B and D the same, dont know about H and K): M12 x 1.0 Pressure Plate bolts (same b and d dont know about h and k): M8 x 1.25 Oil pan/Trans drain plug: M14 x 1.5 Trans case bolts that hold that little ball bearing in place with spring: M12 x 1.0 (oddly enough this is a hard tap to find, and timesert hasnt even made an insert for it yet so dont screw this one up) Oil Pressure Sensor (back of block): 1/8 - 28BSP Bumper screw/bolts: M6 x 1.0 Crank Bolt: M14 x 1.25 14mm Allen Bolt: M28 x 1.5 10mm Allen Bolt: M20 x 1.0 19mm bolt that connects rear trans bracket to trans: M14 x 1.5 If theres any other bolts that people would like to know let me know and ill get you the pitch. __________________ 93 B18C-<FONT COLOR="red">T</FONT> DX coupe <FONT SIZE="2"><FONT COLOR="red">Janer Performance</FONT></FONT> <FONT COLOR="blue">-Engine Building-</FONT> -Turbo Install- <FONT COLOR="green">-General Mechanic-</FONT> -We Sell BDL http://images.honda-tech.com/set1/smile/emthup.gif - PM for good deals. http://images.honda-tech.com/set1/smile/emthup.gif Vouch Custom Clutch Lines RIP Earl Laskey 12.1.06 You will be missed! http://images.honda-tech.com/set1/smile/emsad.gif

02-11-2007, 09:57 AM	#20
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,218	thanks for the post Luserkid __________________ http://people.clemson.edu/~ABense

02-11-2007, 01:53 PM	#21
JerseySiPOS Member Join Date: May 2003 Location: POSeRs, NJ, US Posts: 1,623	Re: (Bense) m16 is for the thermoswitch, under the water pipe. i never tried a crank pulley bolt to see if it fits. __________________ Engine Combo & EFI Tuning http://www.jdmsci.com/ \| VOUCHES: ilsimsli, 91EFHatch, Bbasso, freezyfreeky, vha27, honduhh, xxxhonda20, jdmwhore, thelate1, ixislikixi, hybrid98, AMLS4dr200whp, toekneevwj, JDMFreak_DC2, HondaGuy02, jmm96gsr

02-23-2007, 12:06 PM	#22
JCracer723 Member Join Date: Sep 2001 Location: chivas, campeon, usa Posts: 4,487	Re: Common Honda Bolt thread pitch size dimension (Bense) sticky this

02-23-2007, 12:56 PM	#23
vestalfootball72 Guest Posts: n/a	Re: Common Honda Bolt thread pitch size dimension (Bense) Would anyone happen to know the specs on the hood hinge bolts? Im going to be machining up a few hood spacers, and would like to know this. Thanks!

02-23-2007, 01:28 PM	#25
allricedout Senior Member Join Date: Dec 2006 Location: by a lake Posts: 1,336	exhaust header/ cat studs... i cant remember M12x 1.25? __________________ eh2:

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