Overview
The 5/16-18 hex washer flange bolt is a robust steel fastener combining a hex head with an integrated flat washer. This unslotted hex washer type F design (UWF51618-58Z) features a 5/16-18 UNC thread pitch and a 5/8″ washer face diameter, offering improved load distribution and corrosion resistance through zinc plating. Each box contains 25 units ready for immediate deployment in industrial, agricultural, and commercial applications.
Key Features
- Integrated 5/8″ flat washer face eliminates need for separate washers, reducing assembly time
- Zinc-plated finish provides corrosion resistance for outdoor and damp environments
- Unslotted hex head design ensures secure grip with standard wrenches or nut drivers
- Grade 2 steel construction suitable for general-purpose and moderate-stress fastening
- Packaged in convenient box of 25 units for job-site inventory
- Type F washer profile meets ASME B18.21.1 standards
Technical Specifications
- Thread Size: 5/16″ diameter, 18 TPI (UNC)
- Washer Diameter: 5/8″
- Material: Steel, Grade 2
- Finish: Zinc-plated (clear)
- Head Style: Hex (unslotted)
- Washer Type: Type F (flat washer face)
- Quantity Per Box: 25 units
- Standards Compliance: ASME B18.21.1, ASME B18.2.1
Typical Applications
- Grain bin and agricultural equipment assembly
- Industrial machinery and equipment fastening
- Structural connections requiring integrated washers
- Farm equipment maintenance and repair
- General-purpose bolting in outdoor and indoor environments
Compatibility & Replacements
Compatible With
- Standard 5/16-18 UNC threaded holes
- Agricultural and industrial machinery requiring 5/16″ fasteners
- Systems using ASME B18.21.1 standard washers
- Equipment requiring Type F washer face flange bolts
Replaces / Drop-In Replacement For
- UWF51618-58Z (original part number)
- I94696 (alternate identifier)
- Other 5/16-18 x 5/8 unslotted hex washer type F fasteners meeting ASME specifications
Works With
- 5/16-18 UNC threaded nuts and bolt assemblies
- Standard hex socket and open-end wrenches (standard metric and SAE sizes)
- Nut drivers and power drill fastening tools
- Agricultural and industrial equipment requiring moderate-strength fastening
