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Technical Data Sheet
PartsTable / COMPONENT / D4781
D4781 ✓ Verified by PartsTable
— · PIPE SECTION
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 CONTROL,ROTARY SWITCH is a the manufacturer industrial component. Key specifications include material: FIBERGLASS AND RUBBER SILICONE CLASS Q SINGLE PLY, inside_width: 3.438 INCHES NOMINAL FIRST END IN, inside_length: 6.625 INCHES NOMINAL FIRST END IN, wall_thickness: 0.040 INCHES NOMINAL IN, connection_type: PREFORMED FIRST END, connection_style: RECTANGULAR FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-007-1411, 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
D4781
NSN: 4720-00-007-1411
FSC: 4720
CAGE: 75345 — KIRKHILL, INC. DBA KIRKHILL INC (USA)
SPECIFICATIONS
materialFIBERGLASS AND RUBBER SILICONE CLASS Q SINGLE PLY
inside_width3.438 INCHES NOMINAL FIRST END IN
inside_length6.625 INCHES NOMINAL FIRST END IN
wall_thickness0.040 INCHES NOMINAL IN
connection_typePREFORMED FIRST END
connection_styleRECTANGULAR FIRST END
end_inside_width3.438 INCHES NOMINAL FIRST END IN
style_designatorFULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
end_inside_length6.625 INCHES NOMINAL FIRST END IN
end_overall_length0.750 INCHES NOMINAL FIRST END IN
operating_pressure25.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
cross-sectional_shape_styleRECTANGULAR
NSN4720-00-007-1411
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: D4781 · 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
•
MATERIAL: FIBERGLASS AND RUBBER SILICONE CLASS Q SINGLE PLY
•
STYLE DESIGNATOR: FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
•
OPERATING PRESSURE: 25.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
MEASURING METHOD AND LENGTH: 2.562 INCHES NOMINAL OVERALL IN
•
CONNECTION STYLE: RECTANGULAR FIRST END
•
END OVERALL LENGTH: 0.750 INCHES NOMINAL FIRST END IN
•
INSIDE LENGTH: 6.625 INCHES NOMINAL FIRST END IN
•
END INSIDE WIDTH: 3.438 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALFIBERGLASS AND RUBBER SILICONE CLASS Q SINGLE PLY
STYLE DESIGNATORFULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
OPERATING PRESSURE25.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
MEASURING METHOD AND LENGTH2.562 INCHES NOMINAL OVERALL IN
CONNECTION STYLERECTANGULAR FIRST END
END OVERALL LENGTH0.750 INCHES NOMINAL FIRST END IN
INSIDE LENGTH6.625 INCHES NOMINAL FIRST END IN
END INSIDE WIDTH3.438 INCHES NOMINAL FIRST END IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
END INSIDE LENGTH6.625 INCHES NOMINAL FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
10-2299-1A-2EInterchangeable
interchangeable cross-reference
interchangeable
D-4781Interchangeable
interchangeable cross-reference
interchangeable
10-2299-1A-2E ITEM 137Interchangeable
interchangeable cross-reference
interchangeable
GD515M1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D4781?
D4781 is a CONTROL,ROTARY SWITCH.
What parts can replace D4781?
There are 4 known substitutes for D4781: 10-2299-1A-2E, D-4781, 10-2299-1A-2E ITEM 137 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D4781?
D4781 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-007-1411. 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