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PartsTable / COMPONENT / 4037-22
4037-22 ✓ 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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: STEEL OVERALL, body_width: 1.100 INCHES MAXIMUM IN, leg_length: 0.750 INCHES NOMINAL IN, body_height: 0.195 INCHES MAXIMUM IN, body_length: 1.600 INCHES MAXIMUM IN, overall_length: 1.812 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-189-4731, 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
4037-22
NSN: 4730-00-189-4731
FSC: 4730
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width1.100 INCHES MAXIMUM IN
leg_length0.750 INCHES NOMINAL IN
body_height0.195 INCHES MAXIMUM IN
body_length1.600 INCHES MAXIMUM IN
overall_length1.812 INCHES NOMINAL IN
teeth_quantity22
connection_typeTHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
features_providedHYBRID AND POSITIVE OUTPUTS AND INTERNALLY COMPENSATED
inclosure_materialPLASTIC
NSN4730-00-189-4731
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4037-22 · 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
•
MATERIAL: STEEL BODY
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 0.750 INCHES NOMINAL IN
•
QUICK DISCONNECT NOMINAL SIZE: 0.375 INCHES ALL ENDS IN
•
QUICK DISCONNECT METHOD: PUSH-LOCK ALL ENDS
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BODY
STYLE DESIGNATORMALE COUPLING HALF
LEG LENGTH0.750 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE0.375 INCHES ALL ENDS IN
QUICK DISCONNECT METHODPUSH-LOCK ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS IN
CONNECTION STYLEPLAIN ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
MEP026AInterchangeable
interchangeable cross-reference
interchangeable
MIL-G-52732/8Interchangeable
interchangeable cross-reference
interchangeable
5802Interchangeable
interchangeable cross-reference
interchangeable
922352Interchangeable
interchangeable cross-reference
interchangeable
AMA-2352Interchangeable
interchangeable cross-reference
interchangeable
997097R91Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4037-22?
4037-22 is a CAPACITOR,VARIABLE,AIR DIELECTRI manufactured by Legrand.
What parts can replace 4037-22?
There are 22 known substitutes for 4037-22: MEP026A, MIL-G-52732/8, 5802 and 19 more. Substitute compatibility should be verified for your specific system.
Is 4037-22 still available?
4037-22 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