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HA1537 ✓ 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

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include material: STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL, body_style: BUTTON TYPE, W/MTG TABS, head_style: FLAT CHAMFER, rib_length: 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN, body_length: 0.070 INCHES NOMINAL IN, head_height: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-0108, 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
HA1537
NSN: 4730-00-289-0108
FSC: 4730
CAGE: 2Y614 — LINK-BELT CRANES, L.P., LLLP (USA)
SPECIFICATIONS
materialSTEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL
body_styleBUTTON TYPE, W/MTG TABS
head_styleFLAT CHAMFER
rib_length0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
body_length0.070 INCHES NOMINAL IN
head_height0.312 INCHES NOMINAL IN
rib_quantity31
thread_class3A A
body_diameter0.447 INCHES NOMINAL IN
head_diameter1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
thread_length1.156 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
NSN4730-00-289-0108
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: HA1537 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
0160-0421Interchangeable
interchangeable cross-reference
interchangeable
370CB15Interchangeable
interchangeable cross-reference
interchangeable
M23-E150JNInterchangeable
interchangeable cross-reference
interchangeable
8162Interchangeable
interchangeable cross-reference
interchangeable
38ENSIGNInterchangeable
interchangeable cross-reference
interchangeable
ENSIGN7695Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HA1537?
HA1537 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace HA1537?
There are 22 known substitutes for HA1537: 0160-0421, 370CB15, M23-E150JN and 19 more. Substitute compatibility should be verified for your specific system.
Is HA1537 still available?
HA1537 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