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Technical Data Sheet
PartsTable / MRO / 11543
11543 ✓ Verified by PartsTable
Legrand · MRO · MRO_GENERAL
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 COOLING COIL,AIR,DUCT TYPE is a Legrand thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include shape: HORIZONTAL RECTANGULAR, flange: NOT PROVIDED, material: STEEL OVERALL, pail_hook: NOT PROVIDED, body_style: BUSHING MOUNT, body_width: 1.025 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-050-4203, 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
MRO→ MRO_GENERAL→ 11543
NSN: 4730-00-050-4203
FSC: 4730
CAGE: 93722 — PRYOR MFG CO (USA)
SPECIFICATIONS
shapeHORIZONTAL RECTANGULAR
flangeNOT PROVIDED
materialSTEEL OVERALL
pail_hookNOT PROVIDED
body_styleBUSHING MOUNT
body_width1.025 INCHES MAXIMUM IN
head_angle15.0 DEGREES NOMINAL
point_typeCONVENTIONAL
body_height1.000 INCHES MINIMUM IN
body_length1.346 INCHES MAXIMUM IN
handle_typeLEVER
point_angle118.0 DEGREES NOMINAL
NSN4730-00-050-4203
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11543 · 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
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
22020Interchangeable
interchangeable cross-reference
interchangeable
69-773Interchangeable
interchangeable cross-reference
interchangeable
300-12Interchangeable
interchangeable cross-reference
interchangeable
4301Interchangeable
interchangeable cross-reference
interchangeable
122-5277671 ITEM 33Interchangeable
interchangeable cross-reference
interchangeable
9412350Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11543?
11543 is a COOLING COIL,AIR,DUCT TYPE manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 11543?
There are 33 known substitutes for 11543: 22020, 69-773, 300-12 and 30 more. Substitute compatibility should be verified for your specific system.
Is 11543 still available?
11543 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