Reviews Screw Making Equipment

4 Inch Caster Wheels 2200Lbs Threaded Stem Casters Set of 4 Heavy Duty 1/2 -13 x 1 Screw Diameter 1/2 Stem Length 1 Safety Dual Locking Industrial Castors Wheels for Cart Furniture

【STANDARD AMERICAN SIZE 1/2" -13UNC x 1"】 Please measure the stem size of your old thread dual locking caster wheel with Brakes before purchasing. Our cart wheels screw size is 1/2" -13x1" (Screw Diameter 1/2", Screw Length 1"). The castors are quickly attached to medium and large equipment like workbench, trolley, carts..
【SAFETY DUAL LOCKING SYSTEM】Double lock mechanism locks both the heavy duty wheel and the swivel bearing at the same time, which is holding the equipment firmly in place to reduce accidents, essential for safety. While releasing the brake, the heavy duty casters become 360-degree swivel, can respond immediately to changes in desired direction..
【QUIET MOVEMENT ON HARD FLOORS】The wheels for cart are adopted non-marking polyurethane as its main material, won't harm your wooden floor, no noise, the surface of the rubber stem casters is soft and better protects the ground. The casters set of 4 have a better performance of durability, shock absorption and quiet rolling operation..
【HARDWARE KITS PROVIDED & WIDELY USED】We prepared 4 x bolts and 4 x washers and 1 x spanner to help you quickly and easy to assemble. These castor wheels are widely used, generally used for workbench, cart, troll....

1. Wingnuts butterfly nuts, hand twist screw butterfly nuts..
Screw hole diameter:3mm,4mm,5mm,6mm,8mm..
M3 30 pieces,M4 30 pieces,M5 30 pieces,M6 20 pieces,M8 10 pieces, a total of 120 pieces..
5.Use: widely used in machinery,chemical industry,construction, electricity, textile, sports equipment,paper,sewage treatment,automotive,medical equipment, chassis circuits, electronic equipment, communication equipment, ships etc..

Special equipment for DIY projects and laboratory experiments..
Single-pole double-throw (SPDT) switch for making and breaking a single electrical connection circuit..
Visual, pole style switch for stable operation, screw type binding post for secure electrical connection..
These are low voltage, low current switches, for low voltage DC to power..
Package Content: 3 Pcs x Single Pole Switch..

This is great for home school making and breaking a single electrical connection circuit experiments. good for teaching basic principles of electricity & how a simple circuit works.these are great for demos and project. Easy to use and great learning tool for kids.I think practicing on an education model would definitely benefit any student..
of course that while this does teach them how electricity works, you have to make sure to teach them not to play with actual electrical equipment around the house..
Battery Holde provides stability in handling and visualization of electrical principles, screw type binding post ,screw down connection terminals are heavy duty,for secure electrical connection..
screw type binding post,If you use alligator clips you might want to temporarily remove the connector knobs..
These durable individual plastic d-cell battery holders can be quickly and easily snapped together to form either parallel or series connections. They can be used individually or configured in parallel..

...and visualization of electrical principles, screw type binding post ,screw down connection terminals are heavy duty,for secure electrical connection..
☛ 5, 【 Warm Note】 ------ Of course that while this does teach them how electricity works, you have to make sure to teach them not to play with actual electrical equipment around the house..

Special equipment for students classroom and laboratory experiments.Tip: Max working voltage 36V..
Single-pole single-throw (SPST) switch for making and breaking a single electrical connection circuit..
Safe and visual, knife style switch for stable operation, screw type binding post for secure electrical connection..

Special equipment for students classroom and laboratory experiments.Tip: Max working voltage 36V..
Single-pole single-throw (Spst ) switch for making and breaking a single electrical connection circuit..
Safe and visual, knife style switch for stable operation, screw type binding post for secure electrical connection..

DISPOSABLE CAPS: The black screw caps are designed for single use, and are ideal for labs, schools, and home STEM activities and science experiments..
15-415 THREADS: These lab caps are suitable for use with lab tubes that have a GPI 13-415 thread, or other compatible laboratory equipment..
PHENOLIC CAPS: Made of a phenolic compound, the black threaded screw caps are finished with a white rubber liner, which is securely glued into position..
EASY TO CLEAN: The disposable caps are easy to clean and can be sterilized safely one time in autoclaves at 121°C, making them ideal for use in busy lab environments..
CORNING: For nearly 170 years, Corning has combined its unparalleled scientific expertise with deep manufacturing and engineering capabilities to develop life-changing innovations and products..

UPGRADE DESIGN: With 4 manual adjustment/fixing knobs on each joint, the Z flex tilt head can be quickly locked and loosened, no need adjusting with a bunch of wrenches, greatly improve the operation efficiency.
Compare to the old model, there will be no distortion or looseness due to the load of cameras.
QUALITY Z-SHAPED TILT HEAD: Folding Z type flex tilt tripod head with Maximum load 6.6lb/3kg, can be rotated 180 degree and 360 degree. It's easy to change various angles of photography, make your shooting enjoyable and efficient.
UNIVERSAL USE: The 1/4inch screw on the top is used to fix various cameras and camcorders. The 1/4 and 3/8inch screw holes on the bottom are used to mount various tripods, monopods, slide rail, video track sliders, stabilizers, camera rig, camera cage and other photographic equipment.
SOLID MATERIAL: It uses CNC aluminum with black anodized treatment for higher durability, making it bright, smooth and paint-free.
ANTI ABRASION NON-SLIP: Z Shape Head has anti-skid rubber pads on the top and bottom to increase friction, prevent slipping and protect cameras and tripods and other equipment from wear and tear.