Product Overview
A three-prong lab clamp that hooks onto the frame instead of making you take it apart
Condition
New and unused. The clamp head, extension rod and hook connector are all bright metal, clean, with no corrosion, pitting or tool marks visible in these photos. The blue coating on the prong tips is unmarked everywhere the camera can see it, and the three braided sleeves show frayed ends where they were cut to length, which is simply how braided sleeving comes off a roll. No packaging appears in any photo, so nothing here describes how the piece is packed or stored.
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Product Overview
This is a Thermo Fisher Castaloy three-prong extension clamp, catalog number 14-666-18Q, sold as one complete piece together with the Flexaframe hook connector and the three braided sleeves shown in the photos. The clamp head carries three prongs with blue coating on the gripping tips, given as vinyl in the original product specifications, and a knurled thumbscrew above and below the pivot. It rides on a straight bright-metal extension rod that measures approximately 8 mm in diameter against the millimeter ruler. The original product data lists the clamp at 17 cm with a 2.5 cm grip; laid on the ruler in these photos, with the prong tips sitting a few millimeters left of the ruler zero and the rod end reading near the 167 mm mark, the clamp head and rod together come to approximately 170 mm end to end, which agrees with that listed 17 cm, and roughly 120 mm of rod stands clear of the clamp body. The hook connector is a separate small casting stamped FISHER and CHINA, with a wing-head thumbscrew and an open hook jaw that drops sideways over a support rod. There is also a small stamped marking on the clamp body itself that is present but not legible in these photos.
Key Features
- Three-prong clamp head; prong tips coated blue, described as vinyl in the original product specifications
- Straight bright-metal extension rod, approximately 8 mm diameter measured against the millimeter ruler
- Listed as 17 cm in the original product data, and the millimeter ruler in these photos backs that up at approximately 170 mm end to end
- Grip capacity given as 2.5 cm in the original product data. Not confirmed against the ruler here - verify against the datasheet before use
- Flexaframe hook connector included, stamped FISHER and CHINA, with a wing-head thumbscrew and an open hook jaw
- Three braided sleeves included, described as fiberglass in the original product specifications
- Knurled thumbscrew above and below the clamp pivot
Applications
- A teaching lab tech setting a condenser or a burette onto a Flexaframe lattice for the next section's experiment
- A bench chemist who needs to add one more clamp to a frame that is already loaded, without sliding every other fitting off the rod end
- A lab manager restocking the drawer after a clamp went missing, and matching the Castaloy hardware already on the benches
- A home or hobby setup holding a round-bottom flask, a thermometer or a probe steady over a hot plate
Frequently Asked Questions
What does the Flexaframe connector actually do?
Flexaframe is Fisher's lab support framework - rods and lattice assembled into whatever shape the glassware calls for. The connector included here is the hook style: an open jaw that drops sideways over a support rod and tightens down with the wing-head thumbscrew. The open side is the whole point, because you can add this clamp to a frame that is already carrying other hardware.
What is included?
One three-prong extension clamp, one Flexaframe hook connector, and three braided sleeves. That is everything shown in the photos and everything sold under this listing.
How long is it, exactly?
The original product data lists 17 cm. Against the millimeter ruler in the photos, the clamp head and rod together measure approximately 170 mm end to end - the prong tips reach past the ruler zero, so the photo corroborates the listed figure rather than contradicting it. Treat photo measurements as approximate; if the exact reach matters for your frame, measure your own gap before ordering.
Why buy this one clamp instead of a box of mixed lab hardware?
Because you can see this one before you spend anything. It is a single unused clamp, photographed from several angles with a ruler in frame, sold complete with its connector and sleeves rather than as an unknown quantity of assorted fittings. You know the prong count, the rod diameter and the connector style up front. This clamp clears our free-shipping line on its own, and orders leave the Idaho warehouse the same or next business day.
The hook on that connector exists because nobody wants to strip down a working frame just to add one more clamp. Hook it on, set the prongs, and put it back to the quiet job of holding glassware still.
