Insert, TPMB-321 Carbide

Uncoated carbide
60° triangle, 11° relief
70°-90° single countersink, no chip breaker
0.0156" (1/64") corner radius
ANSI: TPMB321, ISO: TPMB160304

Part Number: 5651
Weight: 0.01 lb

Price: $10.95

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TPMB-321 carbide is a 60° triangle with a 11° relief. The center hole is a 70°-90° single countersink, and there is no chip breaker.

It has an inscribed circle (IC) of 0.375" (3/8"), a thickness of 0.125" (1/8"), and a corner (nose) radius of 0.0156" (1/64").

The insert is designated TPMB321 (ANSI) or TPMB160304 (ISO). For a list of compatible LittleMachineShop.com products, see the Compatibility tab.

Inserts are sold individually—no need to buy a pack of 10 inserts.

Chris' Tips

Chris' Tips
Insert TPMB-321
ANSI TPMB321
ISO TPMB160304 HSS

Make sure you get the correct inserts and retaining screws for your indexable turning tools.

Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.

Drawings

Insert TPMB-321
ANSI TPMB321
ISO TPMB160304 HSS

Inscribed Circle	∅ IC	3/8"
Corner Radius	R	1/64"
Clearance Angle	C	11°
Thickness	T	1/8"
Height	H	9/16"
Hole / Chip Breaker	∅D	5/32" / none

Compatibility

Compatibility

This product works with these LittleMachineShop.com products:

1620 Turning Tools, 1/2" Indexable, HSS Triangle Inserts, A R Warner Kit #9