Laydown Inserts

Laydown Threading Inserts Identification System

Laydown Inserts Identification System

1
TYPE
L - Laydown Neutral Rake
LN - Laydown Negative Rake

2
SIZE
Diameter of the "I.C." (inscribed circle) in 1/8ths of an inch

3
THICKNESS
Thickness of insert in 1/16ths of an inch

4
INSERT FORM
NV - 60° "V" Thread
NT - 29° Aceme/Stub Acme Threading

5
INSERT FORM
API Threading - (example: 428) If there are three numerical digits, the first is the pitch, the second is the taper per foot and the third is the last digit of the root radius.

Rounds - (example: 8R) The digits designate the pitch, R stands for Round.

Buttress - (example: 5B75) The first digits designate the pitch, B stands for Buttress, the last digits indicate the taper per foot in hundredths of an inch (.75 = 3/4" per folt).

API thread forms and charts: see page 58 in our catalog.

6
THREAD PITCH
P - One or two numbers preceed "P" to designate the thread pitch.

Standard Acme and Stub Acme Pitches: 4P - 16P

Standard Acme and Stub Acme pitch widths: see page 58 in our catalog.

Standard NV pitches, widths, and radii: see page 54 in our catalog.

7
ADDITIONAL INFO
INT - Internal
EXT - External
M - Multiple Tooth

These Laydown "L" style inserts are for the old style G.E. Carboloy® tooling system only.

Not for use in Snap-Tap®/Seco® new style tooling systems.

See page 46 in our catalog for Snap-Tap®/Seco® inserts.

® Designates registered trademarks of other companies. All inserts are ground by CARBIDE GRINDING and are NOT a product of the referenced company. All of our carbide is 100% North American made.