3-1/2" x 18T Air Saw Blade - 5 Pack

3-1/2" X 18 TPI BI-METAL AIR SAW BLADE - 5 PACK

Benchmark Abrasives 3-1/2" x 18 TPI Bi-Metal Air Saw Blades provide a versatile mid-range tooth pitch for pneumatic reciprocating saws used in metalworking, automotive repair, fabrication, maintenance, and general cutting applications. The 18 TPI configuration offers finer tooth spacing than the 10 and 14 TPI blades while remaining more aggressive than the 24 and 32 TPI options.

Built with durable bi-metal construction, these compact scroll-style blades combine cutting performance with the flexibility required for reciprocating air saw operation. Each pack includes five blades, making them a practical choice for professional shops, fabricators, mechanics, and maintenance crews that need a balanced blade for a broad range of cutting work.

Product Specifications

Features

• 18 TPI tooth pitch provides a balanced cutting profile between the coarser 10 and 14 TPI blades and finer 24 and 32 TPI options.
• Bi-metal construction combines cutting durability with the flexibility needed for reciprocating saw applications.
• 3-1/2" blade length is designed for compact pneumatic air saw and body saw applications.
• Scroll-style profile supports controlled cutting in confined, curved, and detailed work areas.
• Metal-cutting capability makes the blade useful for automotive, fabrication, exhaust, and maintenance applications.
• Five-blade pack keeps replacement blades ready for professional shop and field use.
• Available alongside 10, 14, 24, and 32 TPI options for matching tooth pitch to the material and application.

Applications

The 18 TPI blade provides a versatile intermediate tooth pitch for applications that need more tooth engagement than the coarse 10 and 14 TPI options without moving to the finer 24 or 32 TPI configurations.

Common applications include:

• Automotive repair on suitable material thicknesses
• Exhaust system cutting
• Metal fabrication
• Maintenance and repair
• General shop cutting
• Wood cutting
• Fiberglass cutting
• Plastic cutting
• Pneumatic saw applications requiring a coarse tooth pitch

For thicker sections, a coarser blade may be preferred. For thinner sheet and fine-cutting applications, consider a higher-TPI option.

Materials

Bi-metal air saw blades are commonly used for cutting metal as well as non-metal materials, with the proper tooth pitch selected according to material type, section thickness, and cutting application.

Suitable materials can include:

• Mild steel
• Sheet metal
• Fabricated steel sections
• Automotive body panels
• Exhaust components
• Aluminum
• Other non-ferrous metals
• Wood
• Nail-embedded wood
• Fiberglass
• Plastic

The 18 TPI configuration provides a useful middle ground in the Benchmark Abrasives air saw blade range. It offers more teeth in contact with the material than the 10 and 14 TPI blades while maintaining wider spacing than the 24 and 32 TPI options.

Machine Compatibility

Designed for compatible pneumatic reciprocating air saws and body saws.

Compatible Examples Include:

• Ingersoll Rand® 429 Air Reciprocating Saw
• Ingersoll Rand® 4429 Air Reciprocating Saw
• Ingersoll Rand® 429G EDGE Series Air Saw
• Ingersoll Rand® 529 Reciprocating Saw
• Astro Pneumatic® 936 ONYX Gear Driven Heavy Duty Air Saw
• AIRCAT® 6350 Low Vibration Air Saw
• Astro Pneumatic® 930 Air Body Saber Saw
• Astro Pneumatic® 129TW Air Saw
• Astro Pneumatic® 929 Heavy Duty Industrial Air Saw

Always confirm blade length and mounting configuration with the requirements of your specific saw before installation.

Performance

The 18 TPI blade is the middle option in this range, with finer spacing than 10 and 14 TPI and wider spacing than 24 and 32 TPI.

Choose this intermediate pitch when it suits the material thickness and finish you need. For thinner sheet, move up to 24 or 32 TPI.

Safety Tips

• Disconnect the air supply before installing, removing, or changing the saw blade.
• Follow the air saw manufacturer's instructions for proper blade installation and retention.
• Make sure the blade is fully seated and securely retained before operating the saw.
• Wear appropriate eye and face protection during cutting.
• Secure the workpiece before beginning the cut.
• Keep hands and other body parts clear of the blade and cutting path.
• Do not use a damaged, bent, or improperly mounted blade.
• Confirm the blade and saw are appropriate for the material being cut.
• Operate the saw only within the manufacturer's stated limits.