Library › Hardware › Tri-clamp × male NPT adapters (21MP style): ½ to 4 in

2½ in clamp × 2½ MNPT

2½ in clamp × 2½ MNPT: 2.88 in face to thread end; thread envelope Ø73.03 × 28.89 (L2)

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

clamp_in	2½
npt	2½
A_in	2.88
A_mm	73.2
thread_major_mm	73.03
L2_mm	28.89

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

From the full sheet

Tri-clamp × male NPT adapters (21MP style): ½ to 4 in: every size, notes, mating features and sources. How long is a tri-clamp to male NPT adapter?

Other sizes

½ in clamp × ¼ MNPT
½ in clamp × ½ MNPT
½ in clamp × ¾ MNPT
¾ in clamp × ¾ MNPT
1 in clamp × ½ MNPT
1 in clamp × 1 MNPT
2 in clamp × 2 MNPT
3 in clamp × 3 MNPT
4 in clamp × 4 MNPT