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Technical Data Sheet

MS51873-84B — Technical Data Sheet

✓ 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, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: LONG, surface_treatment: OXIDE OVERALL, nominal_thread_size: 0.500 INCHES ALL ENDS IN. This part is cataloged in the Federal Logistics Information System under NSN 4730-00-288-6996, 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
MS51873-84B
NSN: 4730-00-288-6996
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorLONG
surface_treatmentOXIDE OVERALL
nominal_thread_size0.500 INCHES ALL ENDS IN
nominal_overall_length5.000 INCHES IN
media_for_which_designedFLUID SINGLE RESPONSE
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_data3 TYPE
specification/standard_data81346-ASTM-A733 GOVERNMENT SPECIFICATION
material_document_and_classificationASTM A120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-288-6996
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51873-84B · 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
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
SPECIFICATION/STANDARD DATA: 81346-ASTM-A733 GOVERNMENT SPECIFICATION
•
STYLE DESIGNATOR: LONG
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
SURFACE TREATMENT: OXIDE OVERALL
•
MATERIAL: STEEL OVERALL
•
MEDIA FOR WHICH DESIGNED: FLUID SINGLE RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIES DESIGNATORNPT ALL ENDS
SPECIFICATION/STANDARD DATA81346-ASTM-A733 GOVERNMENT SPECIFICATION
STYLE DESIGNATORLONG
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
SURFACE TREATMENTOXIDE OVERALL
MATERIALSTEEL OVERALL
MEDIA FOR WHICH DESIGNEDFLUID SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH5.000 INCHES IN
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
B687R-1CPInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
EE-63144InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
501989InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WW-N-351 TY3WTEXTRA-STRONGInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A733S-199CFBInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ASTM-A733InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51873-84B?
MS51873-84B is a NIPPLE,PIPE.
What parts can replace MS51873-84B?
There are 24 known substitutes for MS51873-84B: B687R-1CP, EE-63144, 501989 and 21 more. Substitute compatibility should be verified for your specific system.
Is MS51873-84B still available?
MS51873-84B is currently cancelled.
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