UNEF Inserts | McMaster-Carr

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Product Family

Thread Type

UN/UNF (SAE Straight)

Cut Type

Threads per Inch

Insert Code

System of Measurement

Thread Size

Attachment Type

Tip Radius

Insert Shape

Cutting Direction

Material

Insert Holder Code

Carbide Industry Designation

For Use On

Stainless Steel

Inscribed Circle Diameter (IC)

3/8"

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

RoHS

Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Thread Angle

60°

Finish

Titanium Aluminum Oxygen Nitride (TiAlON) Coated

Number of Cutting Edges

Coating Process

PVD (Physical Vapor Deposition)

Hole Diameter

0.158"

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22 Products

Laydown External Threading Lathe Tool Inserts

Individual Carbide

Insert Case

Image of Attribute. Front orientation. Contains Annotated, MultipleImages. Laydown External Threading Lathe Tool Inserts.

Install these inserts in a K-code holder (sold separately) to cut precise threads on the outside of a workpiece. They’re designed to sit lower in a holder than other inserts, which keeps them from twisting and lets you thread closer to a shoulder. Their PVD coating keeps them sharper longer than CVD-coated inserts, so they’re good for cutting stainless steel. You can also use them to cut non-ferrous metals.

Individual—Inserts sold individually come packed in a clear plastic case to protect cutting edges during shipment.

Package—Inserts sold in packages come factory sealed from the manufacturer for maximum traceability.

		Thread											Individual				Package
	Insert Code	Type	Shape	Angle	Threads per In.	Thread Pitch, mm	IC Dia.	Thk.	Tip Radius	Material	Carbide Industry Designation	Finish	Includes	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
For Use On Stainless Steel



		16ER20UN	UNC, UNF, UNEF	V	60°	20	—	3/8"	0.145"	0.006"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	8247N133	000000	5	8247N151	000000


		16ER24UN	UNC, UNF, UNEF	V	60°	24	—	3/8"	0.145"	0.005"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	8247N134	00000	5	8247N152	00000
		16ERAG60	UNC, UNS, UNF, UNEF, Metric	V	60°	8 to 48	0.5 to 3	3/8"	0.145"	0.002"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	8247N136	00000	5	8247N154	00000
		16ERA60	UNC, UNS, UNF, UNEF, Metric	V	60°	16 to 48	0.5 to 1.5	3/8"	0.145"	0.002"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	8247N135	00000	5	8247N153	00000

Holders

	Shank
KTNR	3/4"	3/4"	5"	Steel	8259N121	0000000
KTNR	1"	1"	6"	Steel	8259N122	000000

Screw-On Caps

Polyethylene

Thread onto male pipe and fittings for the most secure fit. These caps keep dust, paint, and coatings out of threads and pipe. They also protect from damage during manufacturing, shipping, and storage.

Polyethylene—These tough caps are hard and wear resistant to hold up against scrapes and gouges.

	Thread
	Size	Type	For OD	Inside Ht.	Flexibility	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
Polyethylene







				For Straight-Thread Fittings

				5/8"-24	UNEF	5/8"	13/32"	Rigid	150	Red	100	1277K116	000000


				3/4"-20	UNEF	3/4"	1/2"	Rigid	150	Red	100	1277K118	00000
				7/8"-20	UNEF	7/8"	23/32"	Rigid	150	Red	100	1277K121	00000
				1 1/8"-18	UNEF	1 1/8"	15/32"	Rigid	150	Red	100	1277K123	00000
				1 1/4"-18	UNEF	1 1/4"	15/32"	Rigid	150	Red	100	1277K125	00000
				1 3/8"-18	UNEF	1 3/8"	15/32"	Rigid	150	Red	50	1277K127	00000

Laydown Internal Threading Lathe Tool Inserts


		Individual Carbide Insert Case

Install these inserts in an S-code holder (sold separately) to cut precise threads inside your workpiece. They’re designed to sit lower in the holder than other inserts, which keeps them from twisting and lets you thread closer to a shoulder. Their PVD coating keeps them sharper longer than CVD-coated inserts, so they’re good for cutting stainless steel. You can also use them to cut non-ferrous metals.

Individual—Inserts sold individually come packed in a clear plastic case to protect cutting edges during shipment.

Package—Inserts sold in packages come factory sealed from the manufacturer for maximum traceability.

		Thread										Individual				Package
	Insert Code	Type	Shape	Angle	Threads per In.	IC Dia.	Thk.	Tip Radius	Material	Carbide Industry Designation	Finish	Includes	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
For Use On Stainless Steel



		16IR20UN	UNC, UNF, UNEF	V	60°	20	3/8"	0.145"	0.003"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	9938N131	000000	5	9938N143	000000


		16IR24UN	UNC, UNF, UNEF	V	60°	24	3/8"	0.145"	0.002"	Carbide	C6	Titanium Aluminum Oxygen Nitride (TiAlON) Coated	Clear Plastic Case	1	9938N132	00000	5	9938N144	00000

Holders

	Shank
Insert Holder Code	Wd.	Ht.	Overall Lg.	Material		Each
KTNR	3/4"	3/4"	5"	Steel	8259N121	0000000
KTNR	1"	1"	6"	Steel	8259N122	000000


Shown with Insert (Sold Separately)


Shown with Insert (Sold Separately)