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24MORB HOLLOW HEX PLUG

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Description & Features

This straight steel 24MORB Hollow Hex Plug from Brennan Industries features a male SAE O-Ring Boss thread (B1) with a 1-7/8-12 thread size and SAE J514 specification. The thread drill size is 1.312 mm. It also features an external hex head plug (B2) thread type and a NBR O-ring seal material.

SKU: 6408-H24-O

Supplier Part Number (MPN): 6408-H24-O

Alternate Part Numbers: 6408-HHP-24, AFF2138-24S

Specifications

Brand
BRENNAN
Connection Size 1
1-1/2 in
Connection Type
Male SAE ORB
Connection Type 1
Male SAE ORB
Dimension Standards
SAE J1926, SAE J514
Dimensions
0.77 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Plug
Hex Size
3/4 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
3000 psi
Operating Temperature
-40 to 250 deg F
Seal Material
NBR
Series
6408-H-O Series
Thread B1 Drill Dimensions
1.312 in
Thread Size
1-7/8-12

Product Questions & Answers (3)

Question by: Billy C on Aug 17, 2025, 6:27 AM
thread size on this one is 1-7/8-12, that right? just want to make sure before i order a handful of em
Answer by: Customer Support on Aug 18, 2025, 5:41 PM
Correct, the B1 thread is 1-7/8-12, male SAE O-Ring Boss, and it meets SAE J514 spec. The thread drill size comes in at 1.312 mm. If those numbers line up with your port, you're good to go.
Question by: Wade D on Aug 24, 2025, 5:14 PM
got a port that’s 1-7/8-12 SAE ORB, is this the right plug for it?
Answer by: Customer Support on Aug 26, 2025, 6:07 AM
Fit comes down to the thread and style, and this one is a male SAE O-Ring Boss (ORB) plug with a 1-7/8-12 B1 thread built to SAE J514. It seals with an NBR O-ring, and it uses an external hex head plug style for tightening.
Question by: Scott P on Mar 5, 2026, 7:36 AM
So this is just a plug, right? It doesn't let anything flow through it?
Answer by: Customer Support on Mar 6, 2026, 1:08 PM
Correct, this 24MORB Hollow Hex Plug is designed to seal off a male SAE O-Ring Boss thread, preventing any flow.

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