• Thread Identification Chart


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  • FileName: thread_id.pdf [read-online]
    • Abstract: Thread Identification ChartSubs and adapters available with any combination of threads.Special thread adapters manufactured on special order.A - Nominal Pipe Size E - Threads per Inch

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Thread Identification Chart
Subs and adapters available with any combination of threads.
Special thread adapters manufactured on special order.
A - Nominal Pipe Size E - Threads per Inch
B - Outside Diameter of Tool Joint F - Taper per Foot
C - Major Thread Diameter or Diameter at Shoulder G - Threaded Form
D - Length of Pin H - Tool Joint Bore
Name A B C D E F G H
TOOL JOINTS
2 3/8" API Regular 2 3/8" 3 1/8" 2 5/8" 3" 5" 3" 60° API 1"
2 7/8" API Regular 2 7/8" 3 3/4" 3" 3 1/2" 5" 3" 60° API 1 1/4"
3 1/2" API Regular 3 1/2" 4 1/4" 3 1/2" 3 3/4" 5" 3" 60° API 1 1/2"
4 1/2" API Regular 4 1/2" 5 1/2" 4 5/8" 4 1/4" 5" 3" 60° API 2 1/4"
2 3/8" API Internal Flush 2 3/8" 3 3/4" 2 7/8" 3" 4" 2" 60° API 1 3/4"
2 7/8" API Internal Flush 2 7/8" 4 1/8" 3 25/64" 3 1/2" 4" 2" 60° API 2 1/8"
3 1/2" API Internal Flush 3 1/2" 4 3/4" 4 1/64" 4" 4" 2" 60° API 2 11/16"
2 3/8" Mayhew Junior 2 3/8" 2 3/4" 2 21/64" 2 1/4" 4" 2" 60° Mod. API 1 1/2"
2 3/8" Mayhew Regular 2 3/8" 3 1/4" 2 35/64 3" 4" 1 1/2" 60° Mod. API 1 5/8"
2 7/8" Mayhew Full Hole 2 7/8" 3 3/4" 3 3/64" 3 3/8" 4" 1 1/2" 60° Mod. API 2"
2 3/8" Failing Exploration 2 3/8" 2 31/32" 2 1/2" 2 3/4" 4" 2" 60° Mod. API 1 1/2"
2 7/8" Failing Exploration 2 7/8" 3 3/4" 3 1/8" 3 1/4" 4" 2" 60° Mod. API 1 7/8"
2 3/8" Hughes Acme Regular 2 3/8" 3 1/4" 2 19/32" 3" 4" 3 3/8" 29° Acme 1 1/4"
2 7/8" Hughes Acme Regular 2 7/8" 3 3/4" 2 63/64" 3 1/2" 4" 3 3/8" 29° Acme 1 1/4"
3 1/2" Hughes Acme Regular 3 1/2" 4 1/4" 3 17/32" 3 1/2" 4" 3 3/8" 29° Acme 1 3/4"
2 3/8" Winter Weiss 2 3/8" 3 1/4" 2 35/64" 3" 4" 1 1/2" 60° Mod. API 1 1/2"
2 7/8" Winter Weiss 2 7/8" 3 7/16" 2 35/64" 3" 4" 1 1/2" 60° Mod. API 1 1/2"
2 7/8" API Full Hole 2 7/8" 4 1/4" 3 5/8" 3 1/2" 5" 3" 60° Mod. API 2 1/8"
3 1/2"" API Full Hole 3 1/2" 4 5/8" 4" 3 3/4" 5" 3' 60° Mod. API 2 7/16"
E-Rod 1 5/16" 1 5/16" 1" 1 1/2" 3" Sq. Thd. 7/16"
A-Rod 1 5/8" 1 5/8" 1 17/64" 1 3/4" 3" Sq. Thd. 9/16"
A-W Rod 1 3/4" 1 3/4" 1 3/8" 1 7/8" 3" Sq. Thd. 5/8"
N-Rod 2 3/8" 2 3/8" 1 7/8' 2 3/8" 4" Sq. Thd. 1"
NW-Rod 2 5/8" 2 5/8" 2 7/32" 2 3/4" 3" Sq. Thd. 1 3/8"
N-Rod Failing Type 3-Thd. 2 3/8" 2 3/8" 1 7/8" 2 3/4" 3" Sq. Thd. 1 1/8"
Tapered Acme N-Rod ELI 2 3/8" 2 3/8" 1 63/64" 2" 4" 2 1/8" 29° Acme 1"


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