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4391 — RESISTOR,FIXED,WIRE WOUND

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4391: RESISTOR,FIXED,WIRE WOUND.

The RESISTOR,FIXED,WIRE WOUND is a the manufacturer industrial component. Key specifications include end_item_identification: HARLEY DAVIDSON MOTORCYCLE, part_name_assigned_by_controlling_agency: CAP SCREW. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-017-0797, 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→ 4391
NSN: 4720-00-017-0797
NIINs: 000170797, 002314423, 002741287, 004777807, 005773434, 010692693, 012274370, 014782653, 016017440, 016808220
FSC: 4720 — Hose and Flexible Tubing
CAGE: 24161 — GATES CORPORATION (USA)
SPECIFICATIONS
end_item_identificationHARLEY DAVIDSON MOTORCYCLE
part_name_assigned_by_controlling_agencyCAP SCREW
NSN4720-00-017-0797
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 4391 · OEM ⚠ 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
•
TEMP RATING: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER SPIRALLY LAID COTTON CORD AND OUTER LAYER MOLDED RUBBER, SYNTHETIC
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.856 INCHES NOMINAL IN
•
OPERATING PRESSURE: 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SPECIFICATION/STANDARD DATA: 81343-SAE 20R3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: D2 CLASS
•
INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING250.0 FAHRENHEIT SINGLE RESPONSE DEGF
LAYER COMPOSITION AND LOCATION1ST LAYER SPIRALLY LAID COTTON CORD AND OUTER LAYER MOLDED RUBBER, SYNTHETIC
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.856 INCHES NOMINAL IN
OPERATING PRESSURE50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIFICATION/STANDARD DATA81343-SAE 20R3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATAD2 CLASS
INSIDE DIAMETER0.750 INCHES NOMINAL IN
INSIDE SURFACE CONDITIONSMOOTH
MEDIA FOR WHICH DESIGNEDALCOHOL, METHYL AND ETHYLENE GLYCOL AND WATER, FRESH AND FUEL/OIL, HYDROCARBON SINGLE RESPONSE
SUBSTITUTES & CROSS-REFERENCES 4
J20Reference document
Same NSN cross-reference
Reference document — Secondary reference
20R3 3/4IDReference document
Same NSN cross-reference
Reference document — Secondary reference
6435Reference document
Same NSN cross-reference
Reference document — Secondary reference
4420Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4391?
4391 is a RESISTOR,FIXED,WIRE WOUND. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4391?
There are 4 known substitutes for 4391: J20, 20R3 3/4ID, 6435 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4391?
4391 is cataloged in the U.S. Government catalog under NSN 4720-00-017-0797. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.