Page 104 - Carmex - Metric Catalog 2021

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Thread Turning Technical Section

Threading Inserts Standards

Thread Profile Standard Thread Class

ISO DIN 13 6g / 6H
UN ANSI B1.1-1989 2A / 2B
WHITWORTH B.S. 84: 1956 Medium Class
NPT ANSI B1.20.1-1983 -
NPTF ANSI B1.20.3-1976 -
NPS ANSI B1.20.1-1983 -
NPSM ANSI B1.20.1-1983 -
BSPT B.S. 21: 1957 -

DIN 477 DIN 477 -
ACME ANSI B1.5-1988 3G (EXT), 3G / 2G (INT)
STUB ACME ANSI B1.5-1988 2G
TRAPEZ DIN 103 7e / 7H
ROUND DIN 405 Class 7
UNJ MIL-S-8879C 3A / 3B
MJ ISO 5855 4h/6h, 4H/5H

AMERICAN BUTTRESS ANSI B1.9-1973 Class 2
SAGENGEWINDE DIN 513 -
PG DIN 40430 -
V-0.040 API Spec7 -
V-0.038R API Spec7 -
V-0.050 API Spec7 -
V-0.055 API Spec7 -
API ROUND API Spec Standard 5B -
EXTREME – LINE CASING API Spec Standard 5B -

BUTTRESS CASING API Spec Standard 5B -
VAM VAM -
HUGHES HUGHES -
PAC PAC -

DIN: Deutsches Institut für Normung
ANSI: American National Standards Institute
API: American Petroleum Institute
B.S.: British Standards
ISO: International Organisation for Standardization
MIL-S: Military Specification
NPT: American National Standard Taper Pipe Thread
NPTF: National Standard Taper Fuel:Dryseal USA
PAC: Pacific Asia Connection
NPS: Straight thread,same as NPT without taper
NPSM: Free-Fitting Mechanical Joints
A04-10