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Technical Data Sheet
PartsTable / MRO / 20028
20028 ✓ Verified by PartsTable
Jumbo · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The RESISTOR,FIXED,WIRE WOUND is a Jumbo industrial component. 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 product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-006-4572, 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→ 20028
NSN: 4710-00-006-4572
FSC: 4710
CAGE: 79294 — E-SYSTEMS INC MONTEK DIV FLUID CONTROLS OPNS (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
NSN4710-00-006-4572
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 20028 · Jumbo ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: WW-T-700/4 FED SPEC SINGLE MATERIAL RESPONSE
•
FIRST END STYLE: PLAIN
•
CONSTRUCTION: SEAMLESS
•
WALL THICKNESS: 0.035 INCHES NOMINAL IN
•
DIAMETER: 0.312 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN ROUND
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-700/4 FED SPEC SINGLE MATERIAL RESPONSE
FIRST END STYLEPLAIN
CONSTRUCTIONSEAMLESS
WALL THICKNESS0.035 INCHES NOMINAL IN
DIAMETER0.312 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
CROSS-SECTIONAL SHAPE STYLEPLAIN ROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
P845FF0-300-21/2D1AInterchangeable
interchangeable cross-reference
interchangeable
2 1-2 1DFFM1-8CBM300Interchangeable
interchangeable cross-reference
interchangeable
P645FF21-2300PSIInterchangeable
interchangeable cross-reference
interchangeable
156Interchangeable
interchangeable cross-reference
interchangeable
H-344/UInterchangeable
interchangeable cross-reference
interchangeable
TH-37AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20028?
20028 is a RESISTOR,FIXED,WIRE WOUND manufactured by Jumbo. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20028?
There are 21 known substitutes for 20028: P845FF0-300-21/2D1A, 2 1-2 1DFFM1-8CBM300, P645FF21-2300PSI and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20028?
20028 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-006-4572. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026