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Technical Data Sheet
PartsTable / COMPONENT / PFT-4ABLK
PFT-4ABLK ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 2.030 INCHES MAXIMUM IN, flat_height: 0.211 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN, shaft_style: ROUND, FLATTED, shaft_length: 0.828 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN, actuator_type: SINGLE SHAFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-553-1778, 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
PFT-4ABLK
NSN: 4720-01-553-1778
FSC: 4720
CAGE: 8E384 — ALLEN AND WEBB (USA)
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
body_length2.030 INCHES MAXIMUM IN
flat_height0.211 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
shaft_styleROUND, FLATTED
shaft_length0.828 INCHES MINIMUM AND 0.922 INCHES MAXIMUM IN
actuator_typeSINGLE SHAFT
body_diameter4.060 INCHES MAXIMUM IN
shaft_diameter0.248 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
mounting_methodSTANDARD BUSHING
section_quantity1
first_flat_length0.344 INCHES NOMINAL IN
terminal_locationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
NSN4720-01-553-1778
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: PFT-4ABLK · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
L0539Interchangeable
interchangeable cross-reference
interchangeable
0539Interchangeable
interchangeable cross-reference
interchangeable
M22/09-00181FDInterchangeable
interchangeable cross-reference
interchangeable
3003419Interchangeable
interchangeable cross-reference
interchangeable
105D9006SGInterchangeable
interchangeable cross-reference
interchangeable
105D9006SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PFT-4ABLK?
PFT-4ABLK is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace PFT-4ABLK?
There are 31 known substitutes for PFT-4ABLK: L0539, 0539, M22/09-00181FD and 28 more. Substitute compatibility should be verified for your specific system.
Is PFT-4ABLK still available?
PFT-4ABLK 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