Designed for use with 2-inch OD tubing, this steel bulkhead locknut features a 2-1/2 - 12 thread and is used to secure bulkhead fittings through panel walls, brackets, or manifold surfaces in hydraulic systems. The Steel Bulkhead Locknut, 2-1/2 - 12 Thread is manufactured by Tompkins Industries and sourced through Brennan Industries, providing reliable compatibility within standard 37° flare adapter configurations.
With a hex dimension (A) of 0.22 and a length (B) of 0.63, this locknut is suited for installations where a secure, low-profile retention nut is required at a bulkhead pass-through. Steel construction provides the strength and durability expected in demanding industrial hydraulic applications.
SKU: 0306-32
Supplier Part Number (MPN): 0306-32
Alternate Part Numbers: A210212-32S, C1MX23
Specifications
A
0.22
Alternate Part Numbers
Alternate Part NumberA210212-32S, Alternate Part Number C1MX23
B
0.63
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
Supplier Part Number
0306-32
Thread 2
2-1/2 - 12
Thread Sealant
No
Tube O.D.
2
Tube O.D.
2
Product Weight
0.20 lbs
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A
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2
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Product Questions & Answers (1)
Question by: Cody M on Jan 27, 2026, 8:47 PM
Trying to match up parts here, is this locknut the one with a 2-1/2 - 12 thread?
Answer by: Customer Support on Jan 29, 2026, 6:47 AM
Thread size is the main identifier on this one, and it is called out as 2-1/2 - 12, so it matches that bulkhead locknut thread.