Unified fine thread (UNF)

Nominal	Major	Minor Dia.	Minor Dia.	Pitch	TPI	Pitch
Diameter	Diameter	External	Internal	Diameter		mm
	Inch	d1(Inch)	d2(Inch)	Inch
0 - 80 UNF	0.060	0.0447	0.0465	0.0519	80	0,317
1 - 72 UNF	0.073	0.0560	0.058	0.064	72	0,353
2 - 64 UNF	0.068	0.0488	0.0691	0.0759	64	0,397
3 - 56 UNF	0.099	0.0771	0.0797	0.0874	56	0,453
4 - 48 UNF	0.112	0.0864	0.0894	0.0985	48	0,529
5 - 44 UNF	0.125	0.0971	0.1004	0.1102	44	0,577
6 - 40 UNF	0.138	0.1073	0.1109	0.1218	40	0,635
8 - 36 UNF	0.164	0.1299	0.1339	0.146	36	0,705
10 - 32 UNF	0.190	0.1517	0.1562	0.1697	32	0,794
12 - 28 UNF	0.216	0.1722	0.1773	0.1928	28	0,907
1/4" - 28 UNF	0.250	0.2062	0.2113	0.2268	28	0,907
5/16" - 24 UNF	0.313	0.2619	0.2674	0.2854	24	1,058
3/8" - 24 UNF	0.375	0.3239	0.3299	0.3479	24	1,058
7/16" - 20 UNF	0.438	0.3767	0.3834	0.405	20	1,270
1/2" - 20 UNF	0.500	0.4387	0.4459	0.4675	20	1,270
9/16" - 18 UNF	0.563	0.4948	0.5024	0.5264	18	1,411
5/8" - 18 UNF	0.625	0.5568	0.5649	0.5889	18	1,411
3/4" - 16 UNF	0.750	0.6733	0.6823	0.7094	16	1,587
7/8" - 14 UNF	0.875	0.7874	0.7977	0.8286	14	1,814
1" - 12 UNF	1.000	0.8978	0.9098	0.9459	12	2,117
1 1/8" - 12 UNF	1.125	1.0228	1.0348	1.0709	12	2,117
1 1/4" - 12 UNF	1.250	1.1478	1.1598	1.1959	12	2,117
1 3/8" - 12 UNF	1.375	1.2728	1.2848	1.3209	12	2,117
1 1/2" - 12 UNF	1.500	1.3978	1.4098	1.4459	12	2,117

Unified coarse threads (UNC)

Nominal	Major	Major	Minor Dia.	Minor Dia.	Pitch	TPI	Pitch
	Diameter	Diameter	External	Internal	Diameter
Diameter	d(Inch)	d(mm)	d1(Inch)	d2(Inch)	Inch		mm
N 1 - 64 UNC	0.073	1.854	0.0538	0.0561	0.0629	64	0,397
N 2 - 56 UNC	0.086	2.184	0.0641	0.0667	0.0744	56	0,453
N 3 - 48 UNC	0.099	2.515	0.0734	0.0764	0.0855	48	0,529
N 4 - 40 UNC	0.112	2.845	0.0813	0.0849	0.0958	40	0,635
N 5 - 40 UNC	0.125	3.175	0.0943	0.0979	0.1088	40	0,635
N 6 - 32 UNC	0.138	3.505	0.0997	0.1042	0.1177	32	0,794
N 8 - 32 UNC	0.164	4.166	0.1257	0.1302	0.1437	32	0,794
N 10 - 24 UNC	0.19	4.826	0.1389	0.1449	0.1629	24	1,058
N 12 - 24 UNC	0.216	5.486	0.1649	0.1709	0.1889	24	1,058
1/4" - 20 UNC	0.25	6.350	0.1887	0.1959	0.2175	20	1,270
5/16" - 18 UNC	0.3125	7.938	0.2443	0.2524	0.2764	18	1,411
3/8" - 16 UNC	0.375	9.525	0.2983	0.3073	0.3344	16	1,587
7/16" - 14 UNC	0.4375	11.112	0.3499	0.3602	0.3911	14	1,814
1/2" - 13 UNC	0.5	12.700	0.4056	0.4167	0.45	13	1,954
9/16" - 12 UNC	0.5625	14.288	0.4603	0.4723	0.5084	12	2,117
5/8" - 11 UNC	0.625	15.875	0.5135	0.5266	0.566	11	2,309
3/4" - 10 UNC	0.75	19.050	0.6273	0.6417	0.685	10	2,540
7/8" - 9 UNC	0.875	22.225	0.7387	0.7547	0.8028	9	2,822
1" - 8 UNC	1.00	25.400	0.8466	0.8647	0.9188	8	3,175
1 1/8" - 7 UNC	1.125	28.575	0.9497	0.9704	1.0322	7	3,628
1 1/4" - 7 UNC	1.25	31.750	1.0747	1.0954	1.1572	7	3,628
1 3/8" - 6 UNC	1.375	34.925	1.1705	1.1946	1.2667	6	4,233
1 1/2" - 6 UNC	1.50	38.100	1.2955	1.3196	1.3917	6	4,233
1 3/4" - 5 UNC	1.75	44.450	1.5046	1.5335	1.6201	5	5,080
2" - 4 1/2 UNC	2.00	50.800	1.7274	1.7594	1.8557	4.5	5,644
2 1/4" - 4 1/2 UNC	2.25	57.150	1.9774	2.0094	2.1057	4.5	5,644
2 1/2" - 4 UNC	2.5	63.500	2.1933	2.2294	2.3376	4	6,350
2 3/4" - 4 UNC	2.75	69.850	2.4433	2.4794	2.5876	4	6,350
3" - 4 UNC	3.00	76.200	2.6933	2.7294	2.8376	4	6,350
3 1/4" - 4 UNC	3.25	82.550	2.9433	2.9794	3.0876	4	6,350
3 1/2" - 4 UNC	3.5	88.900	3.1933	3.2294	3.3376	4	6,350
3 3/4" - 4 UNC	3.75	95.250	3.4433	3.4794	3.5876	4	6,350
4" - 4 UNC	4.00	101.600	3.6933	3.7294	3.8376	4	6,350