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PartsTable / COMPONENT / AB-7BRASS3-4
AB-7BRASS3-4 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF, nominal_thread_size: 0.750 INCHES ALL ENDS IN, quick_disconnect_method: TWO LUG UNIVERSAL ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-033-8312, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AB-7BRASS3-4
NSN: 4730-01-033-8312
FSC: 4730
CAGE: 72661 — DIXON VALVE & COUPLING COMPANY, LLC DIV DIXON FIRE (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodTWO LUG UNIVERSAL ALL ENDS
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_data3 TYPE AND 3/4 SIZE
specification/standard_data81343-WW-C-633 GOVERNMENT SPECIFICATION
material_document_and_classificationASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
NSN4730-01-033-8312
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AB-7BRASS3-4 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SPECIFICATION/STANDARD DATA: 81343-WW-C-633 GOVERNMENT SPECIFICATION
•
MATERIAL: COPPER ALLOY BODY
•
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
QUICK DISCONNECT METHOD: TWO LUG UNIVERSAL ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
CONNECTION STYLE: PLAIN ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81343-WW-C-633 GOVERNMENT SPECIFICATION
MATERIALCOPPER ALLOY BODY
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
THREAD SERIES DESIGNATORNPT ALL ENDS
QUICK DISCONNECT METHODTWO LUG UNIVERSAL ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
CONNECTION STYLEPLAIN ALL ENDS
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 3/4 SIZE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
AB7ANG25Interchangeable
interchangeable cross-reference
interchangeable
DAS7-32BInterchangeable
interchangeable cross-reference
interchangeable
AB7Interchangeable
interchangeable cross-reference
interchangeable
STYLEAKMPTAMHInterchangeable
interchangeable cross-reference
interchangeable
WWC633TYPE1Interchangeable
interchangeable cross-reference
interchangeable
WW-C-633Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AB-7BRASS3-4?
AB-7BRASS3-4 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace AB-7BRASS3-4?
There are 22 known substitutes for AB-7BRASS3-4: AB7ANG25, DAS7-32B, AB7 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AB-7BRASS3-4?
AB-7BRASS3-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-033-8312. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026