Specification Brand : Thumb Screw Depot BulletPoint1 : ✔ 1/4"-20 x 2" ThumbScrew w/Black Knurled Round Knob BulletPoint2 : ✔ 4 Pack ✔ Proudly Built In USA BulletPoint3 : ✔ Corrosion Resistant Stainless Steel ✔ Reusable BulletPoint4 : ✔ No Tools Required ✔ Durable Plastic Knob BulletPoint5 : ✔ Thumb Screw Depot Hassle Free Lifetime Warranty Color : Black DriveSystem : Thumb ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier1 : 008236805413 ExternallyAssignedProductIdentifier2 : 0008236805413 ExternallyAssignedProductIdentifier3 : 00008236805413 FinishType : Zinc Plated GpsrSafetyAttestation : 1 HandOrientation : Ambidextrous IncludedComponents1 : Knob IncludedComponents2 : Screw ItemName : 1/4"-20 x 2 Thumb Screw Stainless Steel - Black Knurled Round Plastic Knob - Standard/Coarse Thread Thumbscrew - Length: 2.000" - Proudly Built in USA - Package of (4) ItemPackageDimensions_Height : 12.4968 centimeters ItemPackageDimensions_Length : 2.3114 centimeters ItemPackageDimensions_Width : 7.493 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : thumb-screws Manufacturer : Thumb Screw Depot Material : Stainless Steel Material1 : Stainless Steel Material2 : Acetal MaximumShearStrength : 120 MPa MeasurementSystem : Imperial MetalType : Stainless Steel ModelNumber : TSD-14.20-2000-RND-B NumberOfBoxes : 1 NumberOfItems : 4 NumberOfPieces : 4 PartNumber : TSD-14.20-2000-RND-B ProductDescription : Zinc plated carbon steel threaded studs on T knobs ensure durability, strength, functionality and wear resistance. Premium plastic clamping knobs provide durability, a smooth surface and comfortable grip. Sturdy and durable thumb screws for the ultimate in adjusting and tightening control. The tightly-in metal insert are machine-injected at high temperatures to securely connect the parts together, easy to install. T wing knobs are easy to grip and turn by hand, providing leverage and comfort, making it easier to tighten or loosen the knob. The threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. Wing knobs with hand bolts are commonly used in applications that require frequent and quick adjustments or tightening. Widely used in lathes, drill presses, sawing machines, packaging and woodworking machinery, printing and industrial equipment, and fixtures. Note: Always tighten the thumbscrew knob securely to prevent any movement of the fixed assembly. Do not over-tighten the knob as this may damage or strip the threads in the mating assembly. Replace the knob if necessary.