Library › Tri-clamp & pipe › ORFS O-ring face seal fittings (SAE J1453), dash -4 to -24: thread…

ORFS bulkhead lock-nut envelope, dash -24

ORFS bulkhead lock-nut envelope, dash -24: hex 2.375 in (60.32 mm) across flats × 0.410 in (10.41 mm) thick (Brennan FS0306-24), plain bore Ø50.80 at the nominal major diameter of 2-12 (a plain hole in place of the thread); no chamfers

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

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

Dimensions

dash-24
tube OD (in)1 1/2
thread (UN)2-12
nut hex B (FS0318)2.250 in (57.15 mm)
nut width Q (in)1.095
lock nut hex B (FS0306)2.375 in (60.32 mm)
lock nut width TT (in)0.410
union hex H (FS2403, in)2.125
male thread OD / female ID (in, as printed)2 (2.00) / 1-15/16 (1.92)
face-seal O-ring (Parker, AS568)2-029 (ID 1.49 / 37.8 in / mm, W 0.07 / 1.78)
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From the full sheet

ORFS O-ring face seal fittings (SAE J1453), dash -4 to -24: thread, tube OD, O-ring size, nut hex + lock-nut envelopes: every size, notes, mating features and sources. What thread, O-ring and wrench size is an ORFS -6 or -8 fitting?

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