It's a nonpolarized bimetal heat sensor, 1/2" long with rubber sleeves and 6" long leads. It's also mysterious, because when used as a thermocouple multimeter input, it reads approx 94° in nearly boiling water but approx 170° in ambient air. Wethinks some sort of inversion or scaling is going on, but a person with your smarts will surely figure it out.

Ten-packs of 2-pin breakouts (or terminal blocks) from telephone junction boxes, in black or gray with red and green leads that terminate in a modular plug. The breakouts measure 11/16" wide x 5/8" high x 3/4" deep. The screw terminals are 1-1/4" long and the modular plug jumper reaches about 2-3/8" when snapped into its clip.

Literally. This 6 watt, 6 ohm speaker is from Sharp Corporation. The speaker is 4-3/8" x 2" oblong with (4) mounting holes, a paper cone and a 1-7/8" dia voice coil.

Our each is a 56" length of paired blue and red 18AWG wire with 1/4" quick-disconnect terminals on one end and a 3mm center-to-center polarized plug at the other. Also handy as a hook-up wire.

Tell them these are cell phones with only a one-number contact file, and with no texting. Your kiddlier kids still enjoy walkie talkies, and this Educational Insights set has a 300-foot range. Press the connect-disconnect button and the other kid has (5) seconds to respond and you’re both ready to talk at the same time. Also has a cricketish call signal and high/low/off switches. Units are 4-3/8” x 2-3/8” x 1-1/4”. All you add is the gum.

Since these springs come in packs of (12), and you get (3) packs, you'll get (36) of these little steel fuse holders. Each spring measures 5/16" OD x 7/32" thick with a 1-3/16" long leg off the end, so it looks like a tiny corncob pipe. Made to mount 1/4" dia fuses on a PC board, the (36) of them are pregnant with potential repurposes, like metallic millipede parts or mounts for putting candles on the side of a birthday cake so you don't ruin the message on top.

This gray plastic gear is 1-13/16" dia x 3/32" with (56) teeth, 32-pitch, and a 14-1/2° pressure angle with a 3/8" long x 19/32" OD x 3/8" ID bore ready for a keyed shaft. Has (2) 1/4" bores on the face.

This thermal fuse has 1.6 ohm resistance at the terminals, so at 6V should handle up to 3.75A. Housing measures 1-1/4" x 3/4" x 5/8" with a pair of  3/16" terminals on the bottom. Normally closed. Made in the USA in the early '90s for use in a Power Wheels® battery in a Super 6™ Volt Vehicle models 85000-85999, PP940 AND PP941.

This little aluminum heat sink measures 1" square x 5/8" with (4) 5/8" tall fins and a threaded 3/32" bore.

Our 4-1/2" long x 2" wide x 1" deep cell phones fit nicely in this black-leather carrying case. The front is a 2-1/2" x 1-5/8" window of clear plastic through which you can press the buttons. The case is open on the bottom so you can access the ports, and comes with a 6" wrist strap and a plastic belt/pocket clip. A small strap snaps over the phone antenna to keep it from slipping out. Unfortunately, if your phone doesn't have an external antenna, there is nothing to keep it in except a snug fit, an extraordinarily rigid posture, and a determination to never bend over.

Bring these bearings to bear on your next project. Our supply and variety is constantly rolling over so get ‘em while we got ‘em!. Click on the bearing name to see a large photo of your favorite. 

These 0.1uF ceramic capacitors have potted radial leads of stranded wire and are rated for up to 250V. Measuring 1-1/2" x 1/2", these are older-type capacitors and are probably more for point-to-point wiring, not PCB mounting.

This black aluminum heat sink measures 4" x 2" x 1-1/14" with a 2" x 2-1/4" base. (6) 5/16" thick fins at the top and a set of (5) more at the bottom above the base. In between the fins is a 1-1/4" x 2" space for your chip with a 1-1/8" square thermal pad and a 3/16" bore.

We believe this is a replacement switch activated by closing the door of a microwave. It’s a N/O (normally open) microswitch from Dongnan Electronics, rated for 5A at 125V and 2A at 250V. Comes with a bent 1-3/4” lever and is prewired with 19” leads and a 2-pin 5.5mm Molex connector. UL.

Is it spring? Well, it’s a spring. This steel extension spring is technically a “short throttle return spring” and measures 2-1/4" long x 7/16", but it will be just as happy returning anything else if your throttle is already back where it belongs.

Time was, these were sticking through the trunk of every 1984 Taurus on the planet. Now the car phone is mostly a memory, but you can own the antennas for a song. These are passive, 13" long with the bottom 2-1/2" in a coil and a ferrite choke halfway up. Base has a 5/32" - 24 thread.

These single-digit displays with (8) LED segments in a DIP draws approx 150mA between 1.5 and 2.5 VDC. This is numeric because some segments' pins are internally shorted. Common cathode ground. Yellow segments. Measures 28mm x 17.5mm with 13 pins.

You pick from our nylon gear collection. The 30-tooth gear is 1" dia, 32 pitch, with a 20-degree pressure angle. Measures 3/32" thick on the face with a 3/32" bore on that side and an 11/32" dia x 3/8" long 9-tooth shaft with the same pitch/pressure. The 32-tooth gear is 1-1/16" dia, 32 pitch and 20-degree pressure angle (so it'll mesh with the 30-tooth). Measures 3/32" thick on its face with a 1/4" bore and a 15/32" dia x  17/32" long 13-tooth shaft with the same pitch/pressure.