American National Carbide - Product Support

Laydown Threading and Grooving Insert Nomenclature

Simply click on any letter or digit in the part description below to see a full explanation of its meaning.

16 E R 12 - UN * *

Cutting Edge Length

mm	inch	blank
6.35	1/4	11
9.52	3/8	16
12.70	1/2	22
15.88	5/8	27

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External / Internal

E = External

I = Internal

X = Neutral

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Hand

R = Right hand

L = Left hand

X = Neutral

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Threads Per Inch

This indicates the number of threads per inch produced by the insert.

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Thread Standards

ISO = ISO, Metric	NPTF = American NPTF (dry seal)	API 55 = API V 0.055
W = Whitworth, BSW	ACME = American ACME-G	BUT 2.5 = Buttress
BSPT = Whitworth, Cone	STACME = American Stub ACME	BUT 2.6 = Buttress
UN = American UN	API-RD = API Round Casing	VAM = VAM Vallourec
UNJ = American Aerospace	API 384 = API V 0.038R 1:4	60 = 60° Partial Profile
TR = Trapezoid, DIN 103	API 386 = API V 0.038R 1:6	55 = 55° Partial Profile
RD = Round, DIN 405	API 404 = API V 0.040
NPT = American NPT	API 504 = API V 0.050

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Number of Teeth

Blank = 1 tooth

2 = 2 teeth

3 = 3 teeth

4 = 4 teeth

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Multi-Tooth Type

Blank = Single tooth

M = Number of teeth

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Contact ANC Customer Service and Support at (800) 331-7585 for help in selecting the most appropriate product for your application, or click here to request literature for more specific product information.

American National Carbide

American National Carbide
915 South Cherry Street
Tomball, Texas U.S.A. 77375-6669
(281) 351-7165 - (800) 331-7585
Fax: (281) 255-9333
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