Tables and Dimensions Of Useful Things

No 3d printing inventor would get far without good references.

Scroll to the bottom for tables.

 Name                           Last modified      Size  Description
 Parent Directory                                    -   
 thread-profile-uts.png         2017-07-23 15:15   13K  
 thread-profile-trapezoid.jpg   2016-07-27 13:28   49K  
 thread-profile-npt.gif         2018-04-11 21:12   25K  
 thread-profile-npsh.jpg        2018-05-31 15:04  9.3K  
 thread-profile-nh.png          2019-01-15 18:02  106K  
 thread-profile-nh.jpg          2018-09-15 22:46  559K  
 thread-profile-bsp.jpg         2016-04-17 13:48   43K  
 thread-profile-acme.jpg        2019-01-03 07:33   16K  
 thread-profile-acme-stub.jpg   2014-10-05 06:30   92K  
 thread-profile-acme-interna..> 2018-06-19 21:27   12K  
 thread-diagram.png             2019-01-15 16:56   23K  
 RC5_dimensions.png             2019-02-06 17:21  5.7K  Measurements and Tables
 pushfit-male-dimension.jpg     2017-07-13 22:18  125K  thingiverse.com/thing:2434393
 pushfit-male-diagram.jpg       2017-07-13 22:18   46K  thingiverse.com/thing:2434393
 popbottle-pco1881.pdf          2017-03-13 11:29  499K  
 popbottle-pco1810.pdf          2017-03-13 11:29  163K  
 oring-metric.pdf               2017-06-22 18:30  722K  
 oring-imperial.pdf             2017-06-22 18:30  228K  
 nema10-dimensions.jpg          2017-03-13 21:12   40K  Measurements and Tables
 motor-nema23-dimension.jpg     2013-03-30 07:41   52K  
 motor-nema17-dimension.jpg     2016-03-02 21:35   15K  
 microswitch-dimension.jpg      2017-07-12 18:03   25K  
 metric2.html                   2020-07-29 19:47  9.5K  
 metric-nut-dimension.gif       2017-07-12 18:03  3.0K  
 makerbot-endswitch.jpg         2017-07-12 18:20   42K  Top secret.  Ssssh.
 linear-lm8uu-dimension.jpg     2016-03-31 09:06   43K  
 galvanic-compatibility.png     2020-04-04 11:14   98K  
 fan-80mm-dimension.jpg         2013-05-03 06:48   45K  
 fan-40mm-dimension.gif         2017-07-12 18:03   22K  
 drive-gear-mk7.jpg             2015-01-26 20:43   61K  
 decora-plate.jpg               2017-01-07 18:48   64K  
 camera-screw-rc5.jpg           2019-02-01 18:41   80K  
 camera-screw-odd.jpg           2019-02-01 18:23   84K  
 camera-plate.gif               2015-10-15 11:42   23K  
 BatterySizeChart.png           2019-12-04 03:23  168K  
 4-11-16-ovenbox.png            2019-02-05 17:15   57K  
 2x16lcd-dimension.jpg          2017-07-12 18:02   68K  
 200-spring-assortment.jpg      2017-07-12 18:02  280K  
 1963_FDR_F2018.pdf             2019-01-15 18:03  1.0M

Tables

All sizes except threads in mm.

Common Metric Bearings, mm
Type	d	D	B	Where / Why Used
608	8	22	7	Skate bearing, cheap easy and strong. Used everywhere. Fits 5/16" rod very well.
625	5	16	5	Extruders, gearboxes, little things.
635	5	19	6	Bigger, cheaper, uglier 625
624	4	13	5	Can kludge to fit #8 SAE bolts.
633	3	13	5	3mm bearings were sometimes used in direct drive extruders. Rare and expensive.
623	3	10	4
603	3	9	5

Linear Bearings I Have Known
Type	d	D	L	Notes
LM8UU	8	15	24	Surprisingly, the go-to for hobby projects. 8mm rod is very flimsy.
LM10UU	10	19	29
LM12UU	12	21	30
KH1228	12	19	28	Used in the mutated darwin sold by BitsFromBytes. The 12mm rods were the best part of it.

Common Screws in North America
Type	Known By	Use
M3-0.5	Little Computer Screw	CDROMs, laptop HDDs, some computer cases, etc. Metric, in my country!?
#4-40	VGA Thumbscrew	VGA, DVI, RS232, fit-nothing junkpile lingerers.
#6-32	Big Computer Screw	Full-size HDD's, computer cases, electric outlet covers. Extremely common.
#8-32	Little Electric Panel Screw
#10-32	Big Electric Panel Screw
3/8", 7/16", 5.5mm	Fan Screw	Self-tapping screw. No clear standard but the 4.3mm-ish holes they jam into.
3/8" 32TPI	Coax connector, F Connector
1/4" 36TPI	SMA connector, wifi connector
1 1/16"-11.5 NH	Garden Hose, North America	See NH below.
3/4"-14	Garden Hose, Europe
3/4"-5 ACME	Broom Handle	Tolerances vary wildly. See here.
PCO1881	Pop-bottle	See file for far too many details.

Calculated Profiles for Truncated Threads

Type	A	H1	H2	Calculated Coordinates
Type	A	H1	H2	P1	P2	P3
UTS	60°	(3/8)*0.8660	(1/4)*0.8660	0.250000, 0.00000	0.562498, 0.54125	0.687509, 0.54125
UTS	Unified Thread Standard -- all normal nuts and bolts, metric or not. 0.8660 is the height of the 60° triangle.
NH	60°	(3/8)*0.8660	(3/8)*0.8660	0.1250, 0.0000	0.5000, 0.6495	0.6250, 0.6495
NH	"North American garden hose". Surprisingly similar to UTS but more symmetric. Again, 0.8660 is the height of the 60° triangle.
Trapezoidal	30°	1/4	1/4	0.3660,0.0000	0.5000,0.5000	0.8660,0.5000
Trapezoidal	"Metric ACME" is probably this.
ACME	29°	1/4	1/4	0.3707,0.0000	0.5000,0.5000	0.8707,0.5000
ACME	Leadscrews with imperial measures are probably this.
Stub ACME	29°	3/20	3/20	0.422415, 0.000000	0.500000, 0.300000	0.922415, 0.300000
Stub ACME	Is there a 'stub metric' too? It is a mystery.
BSPP	55°	0.320	0.320	0.166667, 0	0.5, 0.640327	0.666667, 0.640327
BSPP	Note this is the parallel thread profile, not the tapered one. BSPP is technically rounded, not truncated, but technically, that's often ignored too since it doesn't matter, BSPP not being self-sealing.
NPT	60°	0.400	0.400	0.0381198, 0	0.508988, 0.815568	0.547108, 0.815568
NPT	NPT is of course special: It's tapered an exact 1.78333°, equivalent to 1/16" rise over 1" run. The given profile has been offset to include that taper without altering any tooth angles, but there is an offset that must be applied in use as well. For every turn of thread, you must add tan(1.78333°) to the Y value. So, P4 would be [0,0.0311351] instead of [0,0], etc.
OpenSCAD Formulae
function profile(A,H2,H1)=let(M=tan(90-(A/2)), X1=((M/2)-(H22))/M, X2=((M/2)+(H12))/M, OFF=-X1M) [ [X1+X1,OFF + MX1], [X1+X2,OFF+MX2], [X1+2-X2,OFF+MX2] ]/2; THREAD_UTS=profile(60, (3/8)0.8660, (1/4)0.8660); THREAD_NH=profile(60, (3/8)0.8660, (3/8)0.8660); THREAD_ACME=profile(29, 1/4, 1/4); THREAD_TRAP=profile(30, 1/4, 1/4);

The Great Table of NPT Pipe Sizes, which tragically disappeared off the internet one day.
Nominal Pipe Size (inch)	Number of threads per inch	Outside Diameter (inch)	Outside Diameter (mm)	Pitch of thread		Depth of thread		Truncation, max.”**		Pitch diameter at plane of hand-tight engagement		Length from end of pipe to plane of hand-tight engagement		Length of useful thread		Length of washout thread		Pitch Diameter at Beginning of External Thread Start (inch)	Effective Thread, External Diameter (inch)
				P		h		l		E		L1		L2
				in	mm	in	mm	in	mm	in	mm	in	Threads	in	Threads	in	Threads
1⁄16	27	0.3125	7.938	0.03704	0.941	0.02963	0.753			0.28118		0.16		0.2611		0.1285	3.47	0.27118	0.28750
1/8"	27	0.405	10.287	0.03704	0.941	0.02963	0.753	0.00360	0.091	0.37360	9.489	0.162	4.36	0.2639	7.12	0.1285	3.47	0.36351	0.38000
1/4"	18	0.540	13.716	0.05556	1.411	0.04444	1.129	0.00490	0.124	0.49163	12.487	0.228	4.10	0.4018	7.23	0.1928	3.47	0.47739	0.50250
3/8"	18	0.675	17.145	0.05556	1.411	0.04444	1.129	0.00490	0.124	0.62701	15.926	0.240	4.32	0.4078	7.34	0.1928	3.47	0.61201	0.63750
1/2"	14	0.840	21.336	0.07143	1.814	0.05714	1.451	0.00560	0.142	0.77843	19.772	0.320	4.48	0.5337	7.47	0.2478	3.47	0.75843	0.79179
3/4"	14	1.050	26.670	0.07143	1.814	0.05714	1.451	0.00560	0.142	0.98887	25.117	0.339	4.75	0.5457	7.64	0.2478	3.47	0.96768	1.00179
1"	11.5	1.315	33.401	0.08696	2.209	0.06957	1.767	0.00630	0.160	1.23863	31.461	0.400	4.60	0.6828	7.85	0.3017	3.47	1.21363	1.25630
1-1/4"	11.5	1.660	42.164	0.08696	2.209	0.06957	1.767	0.00630	0.160	1.58338	40.218	0.420	4.83	0.7068	8.13	0.3017	3.47	1.55713	1.60130
1-1/2"	11.5	1.900	48.260	0.08696	2.209	0.06957	1.767	0.00630	0.160	1.82234	46.287	0.402	4.83	0.7235	8.32	0.3017	3.47	1.79609	1.84130
2"	11.5	2.375	60.325	0.08696	2.209	0.06957	1.767	0.00630	0.160	2.29627	58.325	0.436	5.01	0.7565	8.70	0.3017	3.47	2.26902	2.31630
2-1/2"	8	2.875	73.025	0.12500	3.175	0.10000	2.540	0.00780	0.198	2.76215	70.159	0.682	5.46	1.1375	9.10	0.4337	3.47	2.71953	2.79062
3"	8	3.500	88.900	0.12500	3.175	0.10000	2.540	0.00780	0.198	3.38850	86.068	0.766	6.13	1.2000	9.60	0.4337	3.47	3.34062	3.41562
3-1/2"	8	4	101.600	0.12500	3.175	0.10000	2.540	0.00780	0.198	3.88881	98.776	0.821	6.57	1.2500	10.00	0.4337	3.47	3.83750	3.91562
4"	8	4.5	114.300	0.12500	3.175	0.10000	2.540	0.00780	0.198	4.38712	111.433	0.844	6.75	1.3000	10.40	0.4337	3.47	4.33438	4.41562
5"	8	5.563	141.300	0.12500	3.175	0.10000	2.540	0.00780	0.198	5.44929	138.412	0.937	7.50	1.4063	11.25	0.4337	3.47	5.39073	5.47862
6"	8	6.625	168.275	0.12500	3.175	0.10000	2.540	0.00780	0.198	6.50597	165.252	0.958	7.66	1.5125	12.10	0.4337	3.47	6.44609	6.54062
8"	8	8.625	219.075	0.12500	3.175	0.10000	2.540	0.00780	0.198	8.50003	215.901	1.630	8.50	1.7125	13.70	0.4337	3.47	8.43359	8.54062
10"	8	10.750	273.050	0.12500	3.175	0.10000	2.540	0.00780	0.198	10.62094	296.772	1.210	9.58	1.9250	15.40	0.4337	3.47	10.54531	10.66562
12"	8	12.750	323.850	0.12500	3.175	0.10000	2.540	0.00780	0.198	12.61781	320.493	1.360	10.88	2.1250	17.00	0.4337	3.47	12.53281	12.66562
14"	8	14	355.600	0.12500	3.175	0.10000	2.540	0.00780	0.198	13.87262	352.365	1.562	12.50	2.2500	18.00	0.4337	3.47	13.77500	13.91562
16"	8	16	406.400	0.12500	3.175	0.10000	2.540	0.00780	0.198	15.87575	403.244	1.812	14.50	2.4500	19.60	0.4337	3.47	15.76250	15.91562
18"	8	18	457.200	0.12500	3.175	0.10000	2.540	0.00780	0.198	17.87500	454.025	2.000	16.00	2.6500	21.20	0.4337	3.47	17.75000	17.91562
20"	8	20	508.000	0.12500	3.175	0.10000	2.540	0.00780	0.198	19.87031	504.706	2.125	17.00	2.8500	22.80	0.4337	3.47	19.73750	19.91562
24"	8	24	609.600	0.12500	3.175	0.10000	2.540	0.00780	0.198	23.68094	606.066	2.375	19.00	3.2500	26.00	0.4337	3.47	23.71250	23.91562