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#40 MJ X #40 MP ST.

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Description & Features

This straight steel fitting features a #40 MJ X #40 MP connection. It conforms to SAE J514 standards for the B1 thread, which is a 3-12 Male JIC SAE 37 Degree Flare. The B2 thread conforms to SAE J476 and is a 2-1/2-8 Male NPTF type.

SKU: 2404-40-40

Supplier Part Number (MPN): 2404-40-40

Alternate Part Numbers: A2021-40-40S

Specifications

Connection Size 1
2-1/2 in
Connection Size 2
2-1/2 in
Connection Type
Male JIC, MNPT
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE NPTF
Cubic Inch Space L x W x H Dimensions
35.596 cu-in
Dimension Standards
SAE J514, SAE J476
Dimensions
3.37 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
3-1/4 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
1000 psi
Series
2404 Series
Thread 2 Drill Dimensions
2.318 in
Thread B1 Drill Dimensions
2.318 in
Thread B2 Drill Dimensions
2.318 in
Thread Size
3-12 x 2-1/2-8

Product Questions & Answers (1)

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Question by: Lee H on Mar 5, 2026, 10:01 AM
What size are those threads? Want to make sure it'll fit my setup.
Answer by: Customer Support on Mar 7, 2026, 6:59 AM
This fitting features a #40 MJ x #40 MP connection. The B1 thread is a 3-12 Male JIC SAE 37 Degree Flare, while the B2 thread is a 2-1/2-8 Male NPTF type.

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