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A733S-171CFB ✓ 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 NIPPLE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 0.833 INCHES MINIMUM ALL ENDS IN, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: CENTER WRENCHING FACILITY, surface_treatment: OXIDE OR ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-2074, 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
A733S-171CFB
NSN: 4730-00-196-2074
FSC: 4730
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length0.833 INCHES MINIMUM ALL ENDS IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorCENTER WRENCHING FACILITY
surface_treatmentOXIDE OR ZINC OVERALL
nominal_thread_size1.500 INCHES ALL ENDS IN
nominal_overall_length2.500 INCHES IN
media_for_which_designedAIR SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
specification/standard_data81346-ASTM A733 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 96906-MS51953 GOVERNMENT STANDARD
material_document_and_classificationASTM A120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-196-2074
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A733S-171CFB · 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
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD SIZE: 1.500 INCHES ALL ENDS IN
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID FIRST RESPONSE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A120 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: OXIDE OR ZINC OVERALL
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.500 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID FIRST RESPONSE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A120 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTOXIDE OR ZINC OVERALL
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL OVERALL LENGTH2.500 INCHES IN
STYLE DESIGNATORCENTER WRENCHING FACILITY
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
511-7Interchangeable
interchangeable cross-reference
interchangeable
F-390Interchangeable
interchangeable cross-reference
interchangeable
E1202089Interchangeable
interchangeable cross-reference
interchangeable
N304-7-B17Interchangeable
interchangeable cross-reference
interchangeable
42301-17Interchangeable
interchangeable cross-reference
interchangeable
5314X1ITEM18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A733S-171CFB?
A733S-171CFB is a NIPPLE,PIPE.
What parts can replace A733S-171CFB?
There are 25 known substitutes for A733S-171CFB: 511-7, F-390, E1202089 and 22 more. Substitute compatibility should be verified for your specific system.
Is A733S-171CFB still available?
A733S-171CFB is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026