Threaded Studs                          IFI 136
Nominal Stud Size in.	Tolerance on Length, in.
	For Lengths 6 in. and Shorter	For Lengths Over 6 in.
to 5/16	±0.03	±0.06
over 5/16 to 3/4	±0.06	±0.12
over 3/4 to 1-1/4	±0.12	±0.19
over 1-1/4	±0.25	±0.25

 

Double End Studs                                                                     IFI 136
Nominal Size	Body Diameter(E)								Nut Ends
	Type 1		Type 2		Type 3		Type 4		For Studs Up To and Including 6 in. Lengths		For studs Over 6 in. Length
									Thread Length		Thread Length
									Full Thread(F)	Total Thread(G)	Full Thread(F)	Full Thread(G)
	Max	Min	Max	Min	Max	Min	Max	Min	Min	Max	Min	Max
1/4	-	-	.2500	.2127	.2500	.2408	-	-	.750	.875	1.000	1.125
5/16	-	-	.3125	.2712	.3125	.3026	-	-	.875	1.031	1.125	1.281
3/8	-	-	.3750	.3287	.3750	.3643	-	-	1.000	1.188	1.250	1.438
7/16	-	-	.4375	.3850	.4375	.4258	-	-	1.125	1.344	1.375	1.594
1/2	-	-	.5000	.4435	.5000	.4876	-	-	1.250	1.500	1.500	1.750
9/16	-	-	.5625	.5016	.5625	.5495	-	-	1.375	1.656	1.625	1.906
5/8	-	-	62.50	.5589	.6250	.6113	-	-	1.500	1.812	1.750	2.062
3/4	-	-	.7500	.6773	.7500	.7353	-	-	1.750	2.125	2.000	2.375
7/8	-	-	.8750	.7946	.8750	.8592	-	-	2.000	2.438	2.250	2.688
1	-	-	1.000	.9100	1.000	.9830	-	-	2.250	2.750	2.500	3.000
1-1/8	-	-	1.125	1.0228	1.125	1.1064	-	-	2.500	3.062	2.750	3.312
1-1/4	-	-	1.250	1.1476	1.250	1.2314	-	-	2.750	3.375	3.000	3.625
1-3/8	-	-	1.375	1.2563	1.375	1.3544	-	-	3.000	3.688	3.250	3.928
1-1/2	-	-	1.500	1.3812	1.500	1.4794	-	-	3.250	4.000	3.500	4.250

 

Type 1- Unfinished

Type 2- Finished, Full or Undersized Body

Type 3- Finished, Full Body

Type 4- Finished, Close Body