150 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 1/2″ 2-1/2″ 7/8″
2″ 4 5/8″ 3-1/4″ 1-1/16″
3″ 4 5/8″ 3-1/2″ 1-1/16″
4″ 8 5/8″ 3-1/2″ 1-1/16″
6″ 8 3/4″ 4″ 1-1/4″
8″ 8 3/4″ 4-1/4″ 1-1/4″
10″ 12 7/8″ 4-1/2″ 1-7/16″
12″ 12 7/8″ 4-3/4″ 1-7/16″
14″ 12 1″ 5-1/4″ 1-5/8″
16″ 16 1″ 5-1/4″ 1-5/8″
18″ 16 1-1/8″ 5-3/4″ 1-13/16″
20″ 20 1-1/8″ 6-1/4″ 1-13/16″
24″ 20 1-1/4″ 6-3/4″ 2″
26″ 24 1-1/4″ 8″ 2″
28″ 28 1-1/4″ 8-1/4″ 2″
30″ 28 1-1/4″ 8-1/2″ 2″
32″ 28 1-1/2″ 9-1/2″ 2-3/8″
34″ 32 1-1/2″ 9-3/4″ 2-3/8″
36″ 32 1-1/2″ 10-1/4″ 2-3/8″
38″ 32 1-1/2″ 10-1/4″ 2-3/8″
40″ 36 1-1/2″ 10-1/4″ 2-3/8″
42″ 36 1-1/2″ 11″ 2-3/8″
44″ 40 1-1/2″ 11-1/4″ 2-3/8″
46″ 40 1-1/2″ 11-1/4″ 2-3/8″
48″ 44 1-1/2″ 11-3/4″ 2-3/8″
50″ 44 1-3/4″ 12-1/2″ 2-3/4″
52″ 44 1-3/4″ 12-3/4″ 2-3/4″
54″ 44 1-3/4″ 13-1/4″ 2-3/4″
56″ 48 1-3/4″ 13-1/2″ 2-3/4″
300 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 5/8″ 3″ 1-1/16″
2″ 8 5/8″ 3-1/2″ 1-1/16″
3″ 8 3/4″ 4-1/4″ 1-1/4″
4″ 8 3/4″ 4-3/4″ 1-1/4″
6″ 12 3/4″ 4-3/4″ 1-1/4″
8″ 12 7/8″ 5-1/2″ 1-7/16″
10″ 16 1″ 6-1/4″ 1-5/8″
12″ 16 1-1/8″ 6-3/4″ 1-13/16″
14″ 20 1-1/4″ 7″ 1-13/16″
16″ 20 1-1/4″ 7-1/2″ 2″
18″ 24 1-1/4″ 7-3/4″ 2″
20″ 24 1-1/4″ 8″ 2″
24″ 24 1-1/2″ 9″ 2-3/8″
26″ 28 1-5/8″ 9-3/4″ 2-9/16″
28″ 28 1-5/8″ 10-1/2″ 2-9/16″
30″ 28 1-3/4″ 11″ 2-3/4″
32″ 28 1-7/8″ 11-3/4″ 2-15/16″
34″ 28 1-7/8″ 12″ 2-15/16″
36″ 32 2″ 12-1/2″ 3-1/8″
38″ 32 1-1/2″ 11-3/4″ 2-3/8″
40″ 32 1-5/8″ 12-1/2″ 2-9/16″
42″ 32 1-5/8″ 13″ 2-9/16″
44″ 32 1-3/4″ 13-1/2″ 2-3/4″
46″ 28 1-7/8″ 14-1/4″ 2-15/16″
48″ 32 1-7/8″ 14-1/2″ 2-15/16″
50″ 32 2″ 15-1/4″ 3-1/8″
52″ 32 2″ 15-3/4″ 3-1/8″
54″ 28 2-1/4″ 16-3/4″ 3-1/2″
56″ 28 2-1/4″ 17″ 3-1/2″
600 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 5/8″ 3-1/2″ 1-1/16″
2″ 8 5/8″ 4-1/4″ 1-1/16″
3″ 8 3/4″ 5″ 1-1/4″
4″ 8 7/8″ 5-3/4″ 1-7/16″
6″ 12 1″ 6-3/4″ 1-5/8″
8″ 12 1-1/8″ 7-1/2″ 1-13/16″
10″ 16 1-1/4″ 8-1/2″ 2″
12″ 20 1-1/4″ 8-3/4″ 2″
14″ 20 1-3/8″ 9-1/4″ 2-3/16″
16″ 20 1-1/2″ 10″ 2-3/8″
18″ 20 1-5/8″ 10-3/4″ 2-9/16″
20″ 24 1-5/8″ 11-1/4″ 2-9/16″
24″ 24 1-7/8″ 13″ 2-15/16″
26″ 28 1-7/8″ 13″ 2-15/16″
28″ 28 2″ 13-1/2″ 3-1/8″
30″ 28 2″ 13-3/4″ 3-1/8″
32″ 28 2-1/4″ 14-1/2″ 3-1/2″
34″ 28 2-1/4″ 14-3/4″ 3-1/2″
36″ 28 2-1/2″ 15-1/2″ 3-7/8″
38″ 28 2-1/4″ 17-1/2″ 3-1/2″
40″ 32 2-1/4″ 17-1/2″ 3-1/2″
42″ 28 2-1/2″ 19″ 3-7/8″
44″ 32 2-1/2″ 19-1/2″ 3-7/8″
46″ 32 2-1/2″ 19-3/4″ 3-7/8″
48″ 32 2-3/4″ 21″ 4-1/4″
50″ 28 3″ 22-1/4″ 4-5/8″
52″ 32 3″ 22-3/4″ 4-5/8″
54″ 32 3″ 23-1/4″ 4-5/8″
56″ 32 3-1/4″ 24-1/4″ 5″
900 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 7/8″ 4-3/4″ 1-7/16″
2″ 8 7/8″ 5-3/4″ 1-7/16″
3″ 8 7/8″ 5-3/4″ 1-7/16″
4″ 8 1-1/8″ 6-3/4″ 1-13/16″
6″ 12 1-1/8″ 7-1/2″ 1-13/16″
8″ 12 1-3/8″ 8-3/4″ 2-3/16″
10″ 16 1-3/8″ 9-1/4″ 2-3/16″
12″ 20 1-3/8″ 10″ 2-3/16″
14″ 20 1-1/2″ 10-3/4″ 2-3/8″
16″ 20 1-5/8″ 11-1/4″ 2-9/16″
18″ 20 1-7/8″ 12-3/4″ 2-15-16″
20″ 20 2″ 13-3/4″ 3-1/8″
24″ 20 2-1/2″ 17-1/4″ 3-7/8″
26″ 20 2-3/4″ 17-1/4″ 4-1/4″
28″ 20 3″ 18″ 4-5/8″
30″ 20 3″ 18-1/2″ 4-5/8″
32″ 20 3-1/4″ 19-3/4″ 5″
34″ 20 3-1/2″ 20-3/4″ 5-3/8″
36″ 20 3-1/2″ 21-1/4″ 5-3/8″
38″ 20 3-1/2″ 22-3/4″ 5-3/8″
40″ 24 3-1/2″ 23-1/4″ 5-3/8″
42″ 24 3-1/2″ 24″ 5-3/8″
44″ 24 3-3/4″ 25″ 5-3/4″
46″ 24 4″ 26-1/2″ 6-1/8″
48″ 24 4″ 27″ 6-1/8″
1500 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 7/8″ 4-3/4″ 1-7/6″
2″ 8 7/8″ 5-3/4″ 1-7/16″
3″ 8 1-1/8″ 7″ 1-13/16″
4″ 8 1-1/4″ 7-3/4″ 2″
6″ 12 1-3/8″ 10-1/4″ 2-3/16″
8″ 12 1-5/8″ 11-1/2″ 2-9/16″
10″ 12 1-7/8″ 13-1/4″ 2-15/16″
12″ 16 2″ 14-3/4″ 3-1/8″
14″ 16 2-1/4″ 16″ 3-1/2″
16″ 16 2-1/2″ 17-1/2″ 3-7/8″
18″ 16 2-3/4″ 19-1/2″ 4-1/4″
20″ 16 3″ 21-1/4″ 4-5/8″
24″ 16 3-1/2″ 24-1/4″ 5-3/8″
2500 Series Flanges
Pipe Diameter # of Studs Stud Diameter Stud Length Nut Size
1″ 4 7/8″ 5-1/2″ 1-7/16″
2″ 8 1″ 7″ 1-5/8″
3″ 8 1-1/4″ 8-3/4″ 2″
4″ 8 1-1/2″ 10″ 2-3/8″
6″ 8 2″ 13-1/2″ 3-1/8″
8″ 12 2″ 15″ 3-1/8″
10″ 12 2-1/2″ 19-1/4″ 3-7/8″
12″ 12 2-3/4″ 21-1/4″ 4-1/4″