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51209 ✓ Verified by PartsTable
Legrand · 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 RECEIVER-TRANSMITTER,RADAR is a Legrand industrial component. Key specifications include material: STEEL OVERALL, body_width: 2.250 INCHES NOMINAL IN, head_style: FLAT CHAMFER, leg_length: 0.750 INCHES MAXIMUM ALL ENDS IN, body_height: 1.120 INCHES NOMINAL IN, body_length: 2.620 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-2059, 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
51209
NSN: 4730-00-196-2059
FSC: 4730
CAGE: 79466 — AESYS TECHNOLOGIES, L.L.C. DBA JACKSON & CHURCH HVAC GLOBAL DIV YORK SHIPLEY GLOBAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width2.250 INCHES NOMINAL IN
head_styleFLAT CHAMFER
leg_length0.750 INCHES MAXIMUM ALL ENDS IN
body_height1.120 INCHES NOMINAL IN
body_length2.620 INCHES MAXIMUM IN
design_typeNONREUSABLE
head_height0.040 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
thread_class2A A
body_diameter3.672 INCHES NOMINAL IN
head_diameter0.122 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_length0.199 INCHES MAXIMUM IN
NSN4730-00-196-2059
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 51209 · Legrand ⚠ 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
•
NOMINAL THREAD SIZE: 1.000 INCHES ALL ENDS IN
•
MATERIAL: STEEL OVERALL
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID FIRST RESPONSE
•
LEG LENGTH: 0.750 INCHES MAXIMUM ALL ENDS IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
SURFACE TREATMENT: OXIDE OVERALL
•
NOMINAL OVERALL LENGTH: 1.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.000 INCHES ALL ENDS IN
MATERIALSTEEL OVERALL
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID FIRST RESPONSE
SPECIAL FEATURESSTANDARD WEIGHT PIPE
LEG LENGTH0.750 INCHES MAXIMUM ALL ENDS IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
SURFACE TREATMENTOXIDE OVERALL
NOMINAL OVERALL LENGTH1.500 INCHES IN
STYLE DESIGNATORCLOSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
376BNMInterchangeable
interchangeable cross-reference
interchangeable
3048Interchangeable
interchangeable cross-reference
interchangeable
351004Interchangeable
interchangeable cross-reference
interchangeable
10299Interchangeable
interchangeable cross-reference
interchangeable
SE-3P2Interchangeable
interchangeable cross-reference
interchangeable
8008-1000-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51209?
51209 is a RECEIVER-TRANSMITTER,RADAR manufactured by Legrand.
What parts can replace 51209?
There are 27 known substitutes for 51209: 376BNM, 3048, 351004 and 24 more. Substitute compatibility should be verified for your specific system.
Is 51209 still available?
51209 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