Thumb Screw, 5/16"-18 Thread Size, Round, Black Oxide Steel, 1/4 in Head Ht, 2 1/4 in Lg, 2 PK MPN:Z0677
Thumb Screw, 5/16"-18 Thread Size, Round, Black Oxide Steel, 1/4 in Head Ht, 2 1/4 in Lg, 2 PK
These rugged thumb screws are designed for heavy-duty use in jig and fixture components, with a 5/16in-18 thread size and fully threaded design for maximum grip and stability. Constructed from black oxide steel, they offer exceptional tensile strength of 57,000 psi and a durable, corrosion-resistant finish. With a knurled grip and cheese head design, they provide a secure hold in even the most demanding applications. Ideal for use in manufacturing, assembly, and repair operations, these thumb screws are perfect for industries such as aerospace, automotive, and heavy machinery. Their compact size and lightweight design make them easy to handle and store.
Top product features:
- Fully threaded design for secure fastening
- Grip style knurled head for improved grip and control
- Black oxide finish for corrosion resistance
Top product applications:
- Jig and Fixture Component
- Machine Tooling
- Automotive Repair
Thumb Screw, Grip Style Knurled, Type Thumb Screw, Finish Black Oxide, Material Steel, Thread Size 5/16 In.-18, Fastener Length 2 1/4 in, Thread Style Fully Threaded, Thread Length Not Applicable, Head Width 0.75 in, Head Height 0.25 in, Tensile Strength 57,000 psi, Head Type Cheese, Maximum Head Width 3/4 in, Minimum Head Width Not Applicable, Maximum Head Height 1/4 in, Minimum Head Height Not Applicable, System of Measurement Inch, Drive No Drive, For Use in Systems Jig and Fixture Component
Additional Information
- Country of Origin: US
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: PK
- Package Length: 2.40
- Package Width: 1.30
- Package Height: 0.80
- Package Weight: 0.15
Product info last updated on February 26, 2026 1:10pm UTC
Category: Screws and Bolts