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Class 900 Studding Outlets

Flat Bottom

Shell Or Head Mount

Tangential Mount

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)
Bore OD Thickness OD of RF Stud Circle Hole Dia # of Holes Hole Depth Tap Size T.P.I. Tap Depth Flat Bottom Weight
B O T R C U V Base per 1″
 1/2 4.75 2 1.38 3.25 21/32 4 1.31  3/4 10 0.88 8.2 5
 3/4 5.12 2 1.69 3.5 21/32 4 1.31  3/4 10 0.88 10 5.7
1 5.88 2.12 2 4 49/64 4 1.44  7/8 9 1 14 7.5
1 1/4 6.25 2.12 2.5 4.38 49/64 4 1.44  7/8 9 1 15 8.3
1 1/2 7 2.25 2.88 4.88   7/8 4 1.56 1 8 1.12 20 10
2 8.5 2.12 3.62 6.5 49/64 8 1.44  7/8 9 1 27 15
2 1/2 9.62 2.25 4.12 7.5   7/8 8 1.56 1 8 1.12 37 19
3 9.5 2.12 5 7.5 49/64 8 1.44  7/8 9 1 33 18
4 11.5 2.5 6.19 9.25 1 8 1.81 1 1/8 8 1.25 56 26
5 13.75 2.75 7.31 11 1  1/8 8 2.12 1 1/4 8 1.44 87 37
6 15 2.5 8.5 12.5 1 12 1.81 1 1/8 8 1.25 91 42
8 18.5 3 10.62 15.5 1  1/4 12 2.25 1 3/8 8 1.56 162 62
10 21.5 3 12.75 18.5 1  1/4 16 2.25 1 3/8 8 1.56 210 81
12 24 3 15 21 1  1/4 20 2.25 1 3/8 8 1.56 251 96
14 25.25 3.25 16.25 22 1  3/8 20 2.38 1 1/2 8 1.69 275 98
16 27.75 3.5 18.5 24.25 1  1/2 20 2.56 1 5/8 8 1.88 348 114
18 31 3.88 21 27 1  3/4 20 3 1 7/8 8 2.12 473 142
20 33.75 4.25 23 29.5 1  7/8 20 3.31 2 8 2.25 608 164
24 41 5.12 27.25 35.5 2  3/8 20 4 2 1/2 8 2.81 1096 246

Dimensions are in inches. Weights are in pounds.

Material: Studding Outlets are most commonly provided in SA-105. They can also be made from a full range of stainless and alloy materials.

Thickness: The standard thickness shown above for all studding outlets is the minimum required per ASME Section VIII Division I Paragraph UG-43(d) for thread engagement and an ID mount. It is important to note that each individual application should be analyzed for proper thickness.

Facing: The Studding Outlet minimum thickness “T” includes proper raised face per ANSI B16.5. Outlets can be supplied with any special facing as needed upon request.

Drilling and Tapping: Studding Outlets are furnished to ANSI B16.5 specifications unless otherwise specified. Thread depth is in accordance with ASME Section VIII Division I Para. UG-43(g) for a design temperature not to exceed 650ºF, a base metal stress of 17,500 psi(g), and a stud stress of 25,000 psi(g). All other materials exceeding these stresses should be checked for UG-43 compliance.

Bore: Bore sizes shown above are standard. Other sizes can be furnished upon request.

Curving: Connections can be furnished contoured to fit any shell, head, or cone at additional cost. Specify diameter to be mounted.

Class 900 Studding Outlets PDF (for printing).