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Technical Data Sheet
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28158 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 0.8244 INCHES NOMINAL IN, bore_diameter: 1.5748 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0625 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-043-3750, 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
28158
NSN: 4730-00-043-3750
FSC: 4730
CAGE: 1MME1 — THERMAL ENGINEERING INTERNATIONAL (USA) INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width0.8244 INCHES NOMINAL IN
bore_diameter1.5748 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0625 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN4730-00-043-3750
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 28158 · 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
•
THREAD SERIES: UNF
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.187 INCHES IN
•
SEAT ANGLE: 45.00 DEGREES NOMINAL
•
NUT STYLE: TUBE COUPLING
•
SMALLEST INSIDE DIAMETER: 0.192 INCHES NOMINAL IN
•
LENGTH TO SHOULDER: 0.219 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 24
•
NUT HEIGHT: 0.410 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
NOMINAL TUBE OUTSIDE DIAMETER0.187 INCHES IN
SEAT ANGLE45.00 DEGREES NOMINAL
NUT STYLETUBE COUPLING
SMALLEST INSIDE DIAMETER0.192 INCHES NOMINAL IN
LENGTH TO SHOULDER0.219 INCHES NOMINAL IN
THREAD QUANTITY PER INCH24
NUT HEIGHT0.410 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
28157Interchangeable
interchangeable cross-reference
interchangeable
BT28158Interchangeable
interchangeable cross-reference
interchangeable
3VPS266Interchangeable
interchangeable cross-reference
interchangeable
912248Interchangeable
interchangeable cross-reference
interchangeable
912064Interchangeable
interchangeable cross-reference
interchangeable
79-11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28158?
28158 is a CONE AND ROLLERS,TAPERED ROLLER manufactured by Legrand.
What parts can replace 28158?
There are 22 known substitutes for 28158: 28157, BT28158, 3VPS266 and 19 more. Substitute compatibility should be verified for your specific system.
Is 28158 still available?
28158 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