Haul Cost $1.64—Generic #1 Phillips Screwdriver Bit PH1 1/4⁘ Hex Shank 2⁘ (50mm) Long 0.14⁘ Rod Magnetic Cross Head Drill Bits S2 Steel Industrial Screw Driver Bit ...
Material Grade • — Generic #1 Phillips Screwdriver Bit PH1 1/4⁘ Hex Shank 2⁘ (50mm) Long 0.14⁘ Rod Magnetic Cross Head Drill Bits S2 Steel Industrial Screw Driver Bit — $1.64Find out more.
Performance Engineering of the PH1 Magnetic Bit
Engineers utilize S2 tool steel to ensure this bit survives high rotational stress without fracturing or bending under pressure.
The 1/4 inch hex shank provides a standardized interface for various electric drills and impact drivers in modern workshops.
Cold forging techniques create the precise geometry of the Phillips head to prevent stripping of delicate screw recesses.
This specific PH1 bit measures 50mm in length to provide access into narrow channels found in electronic device housings.
The magnetic tip holds fasteners securely to prevent the loss of small components during complex assembly tasks.
Quick Summary Table
| Specification | Data Detail |
|---|---|
| Material Grade | Industrial S2 Steel |
| Bit Size | Phillips #1 (PH1) |
| Total Length | 50mm (2 Inches) |
| Shank Diameter | 1/4 Inch Hexagon |
| Color Coating | Electrostatic Blue Finish |
The Hidden Lineage of Cross Head Drive Systems
John P. Thompson invented the cross-recessed screw in 1932 to solve the problem of driver slippage in early automotive factories.
Henry Phillips purchased the patents and refined the design for use on the high-speed assembly lines of the 1936 Cadillac.
The design forces the bit to cam out when the screw is tight to prevent over-tightening and damage to the metal.
Microscopic Tolerances in Industrial Fastening Tools
Mass production of these bits requires strict adherence to the standards set by the American Society of Mechanical Engineers.
Small variations in the rod diameter can lead to excessive vibration during high-speed rotation in power tools.
The magnetic field in the steel weakens if the bit reaches high temperatures during prolonged driving of fasteners into dense hardwoods.
Workers should replace bits when the edges of the cross head show even minor signs of rounding or metal fatigue.
Atmospheric Resilience of Blue Phosphate Coatings
Manufacturers apply a blue finish to these bits to provide a thin layer of protection against oxidation and humidity.
This coating serves as a visual identifier for technicians who must distinguish between different bit sizes in a cluttered toolbox.
Friction eventually wears away the blue surface at the contact points where the bit meets the screw head.
Storing these bits in a dry environment prevents the formation of red iron oxide on the exposed S2 steel surfaces.
The Mechanical Synergy of Silicon Tool Steel
According to the American Iron and Steel Institute, S2 steel maintains a Rockwell C hardness between 58 and 62.
Modern S2 steel variants incorporate silicon and manganese to provide a higher hardness rating than standard chrome vanadium alloys.
This composition allows the bit to resist deformation while maintaining enough elasticity to absorb sudden shocks from impact drivers.
The PH1 size is specifically essential for screws found in household appliances and computer cases where space is limited.
Using a PH1 bit on a PH2 screw causes immediate damage to both the tool and the fastener because of poor fitment.
First Hand Insights from Workshop Environments
Verified purchasers on retail platforms often remark that the blue coating disappears after approximately 15 uses in dense pine.
One technician noted the magnetism is strong enough to lift 3 standard 1 inch screws simultaneously without dropping them.
Critics mention that the PH1 tip is occasionally too sharp for certain budget screws made from softer aluminum alloys.
Professional users prefer the 50mm length because it provides better visibility of the work surface compared to shorter 25mm bits.
Curated Inquiries for Tool Specialists
Does S2 steel rust faster than chrome vanadium steel?
S2 steel contains more carbon and lacks the high chromium content of CR-V, making it more susceptible to surface corrosion.
Users should apply a light oil for long-term storage in damp sheds to maintain the integrity of the steel.
Read more about tool steel metallurgy at ASM International.
Why does the PH1 bit cam out more easily than a Torx bit?
While the Phillips geometry is designed to cam out to protect the fastener, Torx drive systems utilize a parallel sidewall design that eliminates the upward force during high-torque applications.
This makes the Phillips system safer for preventing over-tightening but more prone to stripping if the user does not apply sufficient downward pressure.
Explore fastener standards at the ASME website.
Can these magnetic bits damage sensitive solid state drives?
The magnetic field in a screwdriver bit is generally too weak to erase data from modern hard drives or SSDs.
Direct contact with sensitive exposed circuit components should still be avoided to prevent static discharge or physical scratches.
Learn about electromagnetic interference from the IEEE.
Highlights:
The Generic #1 Phillips Screwdriver Bit is made of S2 Steel.
It has a 1/4⁘ hex shank.
S2 Steel provides strength and durability.
The bit is also magnetic.
Key features include:
- Magnetic cross head for secure screw driving
- 0.14⁘ rod for precise screw fit
- 2⁘ or 50mm long for extended reach
- Suitable for use with electric power tools
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Spotlight Deals Generic #1 Phillips Screwdriver Bit PH1 1/4⁘ Hex Shank 2⁘ (50mm) Long 0.14⁘ Rod Magnetic Cross Head Drill Bits S2 Steel Industrial Screw Driver Bit for Electric Power Tools, Blue $1.64 $ 1 . 64
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