OSHA's Hand and Portable Powered Tools rules, 29 CFR 1910 Subpart P (sections 1910.241 through 1910.244), require employers to keep hand tools and portable power tools in safe condition, and set guarding and control requirements for portable circular saws, grinders, sanders, pneumatic tools, powder-actuated fastening tools and other equipment.
Hand and power tools are so common that their hazards are easy to overlook. Cuts, amputations, eye injuries, electric shock and struck-by injuries from ejected fasteners or broken wheels all trace back to tools that were damaged, unguarded or used the wrong way.
What Does Subpart P Cover?
Subpart P, found at 29 CFR 1910 Subpart P, includes:
- 1910.241: definitions.
- 1910.242: general requirements for hand and portable powered tools and equipment.
- 1910.243: guarding of portable powered tools, including saws, switches, pneumatic tools, abrasive wheels, explosive-actuated fastening tools and power lawnmowers.
- 1910.244: other portable tools and equipment, such as jacks and abrasive blast cleaning nozzles.
Electrical safety for corded tools is covered in OSHA's electrical standards in Subpart S, and stationary machines are covered by machine guarding rules in Subpart O. Construction work falls under 29 CFR 1926 Subpart I.
Who Must Comply?
Any general industry employer whose workers use hand tools or portable powered tools is covered. That includes manufacturing, maintenance departments, fleet shops, utilities, warehouses and facilities teams.
Key Requirements
Employer responsibility for tool condition
Under 1910.242(a), each employer is responsible for the safe condition of tools and equipment used by employees, including tools and equipment that employees furnish themselves. A worker's personal drill or wrench brought from home is still the employer's responsibility on the job.
Compressed air for cleaning
Under 1910.242(b), compressed air may not be used for cleaning unless it is reduced to less than 30 psi, and only with effective chip guarding and personal protective equipment.
Portable circular saws
Under 1910.243(a)(1), portable power-driven circular saws with blades over 2 inches in diameter must have guards above and below the base plate or shoe. The lower guard must cover the saw to the depth of the teeth, except for the minimum arc needed to allow proper retraction, and must return automatically to the covering position when the blade is withdrawn from the work.
Switches and controls
Under 1910.243(a)(2), switch requirements depend on the tool:
- Constant-pressure switch, with an optional lock-on that can be turned off by a single motion of the same finger: drills, tappers, fastener drivers, grinders with wheels over 2 inches, disc sanders with discs over 2 inches, belt sanders, reciprocating saws, and saber, scroll and jig saws with blade shanks over 1/4 inch.
- Positive on-off control permitted: platen sanders, grinders and disc sanders with wheels or discs of 2 inches or less, routers, planers, laminate trimmers, nibblers, shears, and scroll and jig saws with blade shanks of 1/4 inch or less.
- Constant-pressure switch only, with no lock-on: other hand-held powered circular saws with blades over 2 inches, chain saws, and percussion tools without positive accessory holding means.
The goal is simple: if the operator lets go or loses control, the tool should stop.
Pneumatic tools
Under 1910.243(b), a tool retainer must be installed on pneumatic tools that could eject the tool, such as chipping hammers. Hoses and connections must be designed for the pressure and service, and hoses should be secured so a disconnected or failed hose cannot whip.
Portable abrasive wheels
Under 1910.243(c), portable grinders must have safety guards that cover the spindle end, nut and flange projections and enclose the wheel as required for the grinder type. Wheels must be rated for at least the tool's speed, and abrasive wheels should be inspected and ring-tested before mounting under 1910.215.
Explosive-actuated fastening tools
Under 1910.243(d), powder-actuated tools may be operated only by trained employees, must be tested each day before loading, may not be loaded until just before use, and must never be pointed at anyone. Tools must not be used in explosive or flammable atmospheres.
Penalties and Enforcement
OSHA cites Subpart P when inspectors find missing guards, defeated switches, damaged tools or employee-owned tools in poor condition. Related citations often follow under machine guarding, electrical and PPE standards. Penalties are adjusted each year for inflation.
Common Compliance Mistakes
- Removing or pinning back the lower guard on a circular saw.
- Taping or zip-tying trigger switches in the on position.
- Mounting wheels rated below the grinder's speed, or using cutoff wheels on grinders without the proper guard.
- Using damaged cords, cracked handles or mushroomed chisels and punches.
- Blowing off clothing or skin with compressed air.
- Letting untrained workers use powder-actuated tools.
How to Comply: Step by Step
- Inventory tools. List the power and hand tools used, including employee-owned tools.
- Verify guards and switches. Confirm each tool has the guarding and switch type Subpart P requires.
- Inspect before use. Have workers check cords, housings, guards, wheels and bits before each use.
- Tag out defective tools. Remove damaged tools from service until repaired or replaced.
- Train users. Cover safe use, inspection, PPE and special rules for grinders and powder-actuated tools.
- Provide PPE. Include eye, face, hand and hearing protection based on the hazard assessment.
- Audit periodically. Add tool checks to routine shop and area inspections.
How SMS360 Helps
SMS360's Audits & Inspections module lets teams run tool room and shop checklists on a phone, photograph missing guards or damaged cords and assign corrective actions. Training Management records tool and powder-actuated tool training, and Safety Observations capture unsafe tool use before it causes an injury.
Frequently Asked Questions
Is the employer responsible for tools employees bring from home?
Yes. Under 1910.242(a), the employer is responsible for the safe condition of all tools used by employees, including employee-owned tools.
Can compressed air be used for cleaning?
Only if it is reduced to less than 30 psi and used with effective chip guarding and PPE. It should never be directed at a person.
Which tools need a constant-pressure switch?
Drills, grinders and sanders over 2 inches, belt sanders, reciprocating saws and similar tools need a constant-pressure switch, with an allowed lock-on. Hand-held circular saws over 2 inches, chain saws and some percussion tools need a constant-pressure switch with no lock-on.
Who may use a powder-actuated tool?
Only employees who have been trained in its operation. The tool must be tested daily before loading and loaded only just before use.
