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BRENNAN ADAPTER

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Description & Features

This straight steel Brennan adapter features a male NPT thread on one side and a female BSPP (G) thread on the other. The thread size for the NPT side (B1) is 1-1/4-11-1/2, conforming to ANSI B1.20.1 specifications. The female BSPP (G) side (B2) has a thread size of 1-1/4-11, and adheres to ISO 1179, ISO 8434-6, and BS 5200 standards.

The Brennan adapter is part of the 7033 series. Its thread drill sizes are 31.7 mm for B1 and 39.3 mm for B2.

SKU: 7033-20-20

Supplier Part Number (MPN): 7033-20-20

Specifications

Brand
BRENNAN
Connection Size 1
1-1/4 in
Connection Size 2
1-1/4 in
Connection Type
Female BSP, MNPT
Connection Type 1
Male SAE 30 deg NPTF
Connection Type 2
Female BSPP
Cubic Inch Space L x W x H Dimensions
9.197 cu-in
Dimension Standards
SAE J476
Dimensions
61.1 mm L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
3000 psi
Series
7033 Series
Thread B1 Drill Dimensions
31.7 mm
Thread B2 Drill Dimensions
39.3 mm
Thread Size
1-1/4-11-1/2 x 1-1/4-11

Product Questions & Answers (1)

Question by: Darryl W on Mar 24, 2026, 2:14 PM
So this here adapter has two different kinds of threads on it?
Answer by: Customer Support on Mar 26, 2026, 6:21 AM
That's right. It has a male NPT thread on one side and a female BSPP (G) thread on the other.

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