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05FORB-02MP STRAIGHT

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Description & Features

This straight steel fitting, designated as 05FORB-02MP STRAIGHT, is part of the 6404 series. It features a 1/2-20 female SAE O-ring Boss thread (B1) according to SAE J514 standards.

The fitting also incorporates a 1/8-27 male NPTF thread (B2) conforming to SAE J476 specifications. With an overall length of 1.370 mm, this fitting ensures a secure and reliable connection.

SKU: 6404-05-02

Supplier Part Number (MPN): 6404-05-02

Alternate Part Numbers: A2246-2-5S

Specifications

Connection Size 1
5/16 in
Connection Size 2
1/8 in
Connection Type
Female SAE ORB, MNPT
Connection Type 1
Female SAE ORB
Connection Type 2
MNPTF
Dimension Standards
SAE J1926, SAE J476, SAE J514
Dimensions
1.17 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
3/4 in
l Dimensions
1.37 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Series
6404 Series
Thread 2 Drill Dimensions
0.188 in
Thread B1 Drill Dimensions
0.234 in
Thread Size
1/2-20 x 1/8-27

Product Questions & Answers (2)

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Question by: Jean A on Feb 18, 2026, 7:59 PM
fitting has a 1/2-20 female SAE O-ring Boss on one end and 1/8-27 male NPTF on the other -- that right? just want to make sure before i order a handful of these
Answer by: Customer Support on Feb 20, 2026, 11:54 AM
Both threads are correct. The B1 end is a 1/2-20 female SAE O-ring Boss per SAE J514, and the B2 end is a 1/8-27 male NPTF per SAE J476. That combination makes it a straight adapter that bridges those two thread types in a single body, no extra pieces needed.
Question by: Joyce B on Nov 14, 2025, 12:48 PM
got a port that’s 1/2-20 ORB female, will this screw in and seal up right?
Answer by: Customer Support on Nov 16, 2025, 12:02 PM
You’re looking for a 1/2-20 female SAE O-ring boss connection on the B1 side, and that matches this fitting’s B1 thread type and size per SAE J514.

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