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20028S ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include guide: NOT INCLUDED, diameter: 0.438 INCHES NOMINAL IN, material: STEEL BODY, dial_size: 2-1/2 IN. DIA IN, unit_type: MOUNTED, base_style: MEDIUM SCREW.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-273-3671, 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
20028S
NSN: 4730-01-273-3671
FSC: 4730
CAGE: 7Z588 — NORMA PENNSYLVANIA INC. DIV BREEZE INDUSTRIAL PRODUCTS (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.438 INCHES NOMINAL IN
materialSTEEL BODY
dial_size2-1/2 IN. DIA IN
unit_typeMOUNTED
base_styleMEDIUM SCREW
bezel_typeSLIPS-ON
body_styleHEADSET, COVERED
body_width0.950 INCHES NOMINAL IN
bulb_styleA (ARBITRARY DESIGNATION)
duty_cycleCONTINUOUS
end_radius0.750 INCHES NOMINAL IN
NSN4730-01-273-3671
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20028S · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
20028Interchangeable
interchangeable cross-reference
interchangeable
100 28 H BInterchangeable
interchangeable cross-reference
interchangeable
500 28 HInterchangeable
interchangeable cross-reference
interchangeable
6-0401-53-0-0320Interchangeable
interchangeable cross-reference
interchangeable
61038Interchangeable
interchangeable cross-reference
interchangeable
TF4S21YYInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20028S?
20028S is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 20028S?
There are 32 known substitutes for 20028S: 20028, 100 28 H B, 500 28 H and 29 more. Substitute compatibility should be verified for your specific system.
Is 20028S still available?
20028S 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