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ADAPTER

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Description & Features

This adapter features a 1-11/16-12 A thread and a 1-5/8-12 B thread. The adapter's A drill measures 1.024, while the B drill is also 1.024. Its H hex is 1.750, and the L length is 2.290.

This straight adapter is part of the FS6403 Series and accommodates a 1-1/4 tube OD.

SKU: FS6403-20-20

Supplier Part Number (MPN): FS6403-20-20

Specifications

a Drill Dimensions
1.024 in
b Drill Dimensions
1.024 in
Connection Size 1
1-1/4 in
Connection Size 2
1-1/4 in
Connection Type
Male JIC, Male ORFS
Connection Type 1
Male SAE ORFS
Connection Type 2
Male SAE JIC
Dimension Standards
SAE J1453, SAE J514
Dimensions
2.29 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-3/4 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
4000 psi
Operating Temperature
-40 to 250 deg F
Series
FS6403 Series
Thread Size
1-11/16-12, 1-5/8-12
Tube Outside Diameter
1-1/4 in

Product Questions & Answers (1)

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Question by: Neal M on Jul 14, 2025, 8:57 AM
What size wrench do I need for this adapter? Just wanna make sure I got the right one before I start wrenchin' on it.
Answer by: Customer Support on Jul 15, 2025, 9:03 PM
This adapter uses a 1.750 H hex, so that's the size wrench you'll need.

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