5/16-18 Clamping Thumb Screws with Black Knob Multiple Sizes Industrial Grade 5/16" Thumb Screw Bolts with Black Fluted Round Grip for Clamping 2 and 4 Packs Available Stainless Steel 18-8 5/16-18 (Coarse Thread) Lengths: 1/2" - 3 1/2" Clamping Knob Finger Grip is 1 1/2" Wide for Comfort 3/8" Thick Bolts are 8-18 Stainless Steel, with High Quality Hand Knobs Made in USA Lengths: 5/16 x 1/2", 5/16 x 3/4", 5/16 x 1in, 5/16 x 1 1/4", 5/16 x 1 1/2", 5/16x 2in, 5/16 x 2 1/2" 5/16 x 3" 5/16 x 3 1/2" Thumb screws offer a hand-adjustment feature, which allows for simple action to fasten, tighten, loosen, or remove the screws. However, they are also ideal for applications in which space is too restricted to allow enough clearance for the use of tools to fasten the screw. Designers might choose thumbscrews for household, electronic and other consumer products, not just for the ease of fastening but also to avoid the risk of over-tightening. They are particularly beneficial for assemblies that require repeated removal and reinstallation. When used for removal-and-reinstallation applications, such as safety covers or access panels, these bolts can reduce the amount of time required for maintenance or inspection. Their hand-adjustment design also reduces the incidence of broken or stripped fasteners that might occur with frequent removal and reinstallation. These can be used to secure material without using a wrench. They can also be used for: Panels Vices Clamps Router Table Camera Tripod Power Tools Woodworking Jigs Tile Saws Chop Saws Microphone Stands Visit our store for additional thumb screw options 100% Customer Satisfaction Rating Fast and Free Shipping Made in USA 1/4"-20 Thumb Screws with Gray Wing Knob Multiple lengths Stainless Steel $11.30 1/4"-20 Thumb Screws with Yellow Wing Knob Multiple lengths Stainless Steel $11.30 1/4" Clamping Thumb Screw Set (Pack of 4) for Softwoods Includes Bit Black Knob $17.00 3/8"- 16 Thumb Screw Bolts with Black Tee Wing Knob. Various Sizes. Stainless $13.75 3/8"- 16 Thumb Screw Bolts with Red Tee Wing Knob. Various Sizes. Stainless $13.75 1/4"- 28 Clamping Thumb Screws (Fine Thread) Gray Knob (Set of 4) $12.45 1/4"- 28 Clamping Thumb Screws (Fine Thread) Red Rosette (Set of 4) $12.45 1/4" Service Thumb Screw Multiple Sizes (Set of 2) Black Knurled 1/4-20 $9.25 1/4" Caution Thumb Screw Multiple Sizes (Set of 2) Black Knurled 1/4-20 $9.25 1/4" -20 Clamping Thumb Screw Choose size / color (Set of 4) Knurled Knob $11.30 1/4"-20 Clamping Thumb Screws Multiple Sizes. (Set of 4) Red Knob Stainless $12.00