SystemShield 1/4"-20 × 1" Hex Head Bolt

1/4"-20 × 1 in Hex Head Bolt

Short Description

Steel 1/4"-20 × 1 in hex head bolt for machine-fastened mounting applications in grounding, bonding, cabinet, enclosure, and equipment assemblies. Matching listings show zinc-plated steel, ASME B18.2.1 dimensional standard, 7/16 in wrench size, and 0.150 to 0.163 in head height for this size class.

Product Overview

The SystemShield 1/4"-20 × 1 in Hex Head Bolt is a machine-thread fastener intended for use with compatible nuts, washers, threaded components, and bracketed assemblies where a hex-drive head and coarse 1/4"-20 thread are required. Matching commercial listings identify this configuration as 1/4 in diameter, 20 TPI coarse thread, 1 in length, right-hand thread, and commonly fully threaded in this size/length offering.

For this size class, matching dimensional references show a 7/16 in width across flats, 0.150 to 0.163 in head height, and 0.428 to 0.438 in across-flats tolerance range under ASME geometry references. Matching listings also show zinc-plated steel construction for moderate corrosion resistance in general-use assemblies.

This fastener format is well suited for cabinet hardware, bracket mounting, enclosure assembly points, and bonded mechanical joints where a machine-thread hex bolt is preferred over a Phillips-drive screw.

Key Features

• 1/4"-20 coarse machine thread with 1 in nominal length
• Hex head for wrench-driven installation
• Steel construction for general mechanical fastening use
• Zinc-plated finish for moderate corrosion resistance
• ASME B18.2.1 dimensional standard reference
• 7/16 in width across flats / wrench size for this size class
• Commonly listed as fully threaded in 1 in length offerings
• Suitable for use with compatible 1/4"-20 nuts and washers in structured assemblies

Technical Specifications

What’s Included

• (1) 1/4"-20 × 1 in hex head bolt
• No nut included
• No washer included
• No locking element included

Typical Applications

• Bracket mounting
• Cabinet hardware fastening
• Enclosure assembly fastening
• Bonding hardware stack-ups using separate nut and washer hardware
• General machine-thread fastening where 1/4"-20 hardware is specified
• Equipment mounting points requiring hex-head access

Compatibility

Compatible with:

• 1/4"-20 hex nuts, threaded components, and mating hardware systems sized for this thread
• 7/16 in wrench or socket tools sized for this head format
• Compatible flat washers and lock washers sized for 1/4 in hardware
• SystemShield Standard Mounting Hardware Kit, where this bolt is a primary included hardware component
• Grounding, bonding, cabinet, and enclosure assemblies requiring this diameter, thread, and length format

Not intended as:

• A self-tapping fastener
• A wood screw
• A substitute for a different thread system, bolt length, or head style where exact match is required

Installation Notes

1. Use this bolt only in assembly points designed for 1/4"-20 machine threads. Confirm that the mating nut, threaded feature, washer stack, and grip length match the bolt’s thread and overall length before installation.
2. Install with a properly fitting 7/16 in wrench or socket.
3. Because zinc-plated steel hex bolts are general-use fasteners, final torque and joint suitability should be determined by the actual mating materials, hardware stack-up, and application requirements.
4. Verify thread match, length suitability, head clearance, washer and nut requirements, and application requirements before installation.

Compliance & Regulatory Information

Matching listings support this bolt format as a steel, zinc-plated, ASME B18.2.1 hex-head machine-thread fastener. The sources reviewed establish dimensional and material details, but they do not show a separate standalone certification claim that should be carried into this listing as a broader compliance statement.

It should be used only as part of a properly designed assembly and with hardware selected for the actual joint and environment.

Packaging & Handling

• Protect against thread damage
• Protect against hex-head deformation
• Protect against plating damage
• Protect against corrosion from improper storage conditions

Store in a clean, dry environment before installation. Do not use damaged bolts with deformed threads or damaged hex heads.

Notes / Limitations

This product is a fastening component, not a complete assembly.

• Final suitability depends on correct thread match
• Correct length selection is required
• Correct mating hardware is required
• Proper installation practices are required
• Actual application requirements must be verified