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Square (S) Turning Inserts

Square (S) Turning Inserts

Recommended for external turning applications such as facing, these square inserts have a 90° point angle and provide the second-strongest cutting edge of all the insert shapes. Square inserts are recommended for roughing applications and intermittent cutting.

Insert shapes are available with a range of point angles. In general, inserts with a large point angle have a stronger cutting edge but produce more vibration and require more machine power than inserts with a small point angle. Inserts with a small point angle are more versatile, provide better accessibility for detailed cutting, produce less vibration, and require less machine power than inserts with a large point angle, but they have a weaker cutting edge and may be more prone to heat damage.

Inserts are available with a negative or positive basic shape. Negative inserts have a 0° clearance angle. They provide good edge strength and are recommended for external turning and heavy cutting applications. Double-sided negative inserts offer twice as many cutting edges as positive inserts, but single-sided negative inserts provide the best stability in heavy roughing applications. Positive inserts have a clearance angle that is greater than 0° and are a good choice for internal turning applications and external turning applications on slender workpieces. Positive inserts are single sided and produce lower cutting forces than negative inserts.

Best for Steel (P)

These turning inserts are the first choice for machining steel.

SBMT Insert Style — 38 Seat Size

5 ° Clearance Angle

Positive (Smooth-Finish) Rake — 5 ° Clearance Angle

SCMT Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMT Insert Style — 38 Seat Size

7 ° Clearance Angle

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNMG Insert Style — 09 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 19 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 09 Seat Size

0 ° Clearance Angle

SNMM Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMU Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SPMR Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMR Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMT Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

Best for Stainless Steel (M)

When machining stainless steel, use these turning inserts for best results.

SCMT Insert Style — 09 Seat Size

7 ° Clearance Angle

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMW Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNMG Insert Style — 09 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 12 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 15 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 19 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMM Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SPMR Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMR Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 19 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

Best for Heat-Resistant Materials (S)

Choose from a range of turning inserts that perform well when machining on heat-resistant materials.

SCMT Insert Style — 09 Seat Size

7 ° Clearance Angle

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNGN Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 12 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 19 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SPUN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

Best for Hardened Materials (H)

Use these turning inserts for good performance when machining hardened materials.

SCGW Insert Style — 09 Seat Size

7 ° Clearance Angle

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNGA Insert Style — 09 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGA Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

Best for Cast Iron (K)

Get good results when machining on cast iron with these turning inserts.

SCMT Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNGA Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 09 Seat Size

0 ° Clearance Angle

SNGN Insert Style — 12 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGQ Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGX Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 09 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMA Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 09 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 25 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMU Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SPUN Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 19 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

Best for Nonferrous Metals (N)

Machine aluminum and other nonferrous materials with these turning inserts.

SCGX Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SEGN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 20 ° Clearance Angle

SPUN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

For Universal Use

A good choice for a range of materials, these turning inserts can be used for a variety of machining tasks on different materials.

SCMT Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMW Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SCMW Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 7 ° Clearance Angle

SNGA Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 09 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 15 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNGN Insert Style — 19 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 09 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 12 Seat Size

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 15 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SNMG Insert Style — 19 Seat Size

0 ° Clearance Angle

Negative (Extended-Life) Rake — 0 ° Clearance Angle

SPGN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMT Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPMT Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 09 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 12 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle

SPUN Insert Style — 19 Seat Size

Positive (Smooth-Finish) Rake — 11 ° Clearance Angle