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SF71 — TRANSFORMER,POWER AUTOTRANSFORME

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

SF71: TRANSFORMER,POWER AUTOTRANSFORME.

TRANSFORMER,POWER AUTOTRANSFORME. Key specifications include material: RUBBER SYNTHETIC COVER, wall_thickness: 0.172 INCHES NOMINAL IN, working_length: 8.500 INCHES MINIMUM AND 9.000 INCHES MAXIMUM IN, inside_diameter: 1.750 INCHES NOMINAL IN, first_arm_length: 1.625 INCHES NOMINAL IN, style_designator: STRAIGHT CORRUGATED. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-678-8731, 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
SF71
NSN: 4720-00-678-8731
FSC: 4720 — Hose and Flexible Tubing
CAGE: 83397 — CROWN PRODUCTS CO
SPECIFICATIONS
materialRUBBER SYNTHETIC COVER
wall_thickness0.172 INCHES NOMINAL IN
working_length8.500 INCHES MINIMUM AND 9.000 INCHES MAXIMUM IN
inside_diameter1.750 INCHES NOMINAL IN
first_arm_length1.625 INCHES NOMINAL IN
style_designatorSTRAIGHT CORRUGATED
second_arm_length1.625 INCHES NOMINAL IN
fsc_application_dataENGINE COOLING,NONAIRCRAFT
NSN4720-00-678-8731
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: SF71 · 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
•
FSC APPLICATION DATA: ENGINE COOLING,NONAIRCRAFT
•
STYLE DESIGNATOR: STRAIGHT CORRUGATED
•
WALL THICKNESS: 0.172 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC COVER
•
SECOND ARM LENGTH: 1.625 INCHES NOMINAL IN
•
WORKING LENGTH: 8.500 INCHES MINIMUM AND 9.000 INCHES MAXIMUM IN
•
FIRST ARM LENGTH: 1.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAENGINE COOLING,NONAIRCRAFT
STYLE DESIGNATORSTRAIGHT CORRUGATED
WALL THICKNESS0.172 INCHES NOMINAL IN
INSIDE DIAMETER1.750 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC COVER
SECOND ARM LENGTH1.625 INCHES NOMINAL IN
WORKING LENGTH8.500 INCHES MINIMUM AND 9.000 INCHES MAXIMUM IN
FIRST ARM LENGTH1.625 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
VF5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SF71?
SF71 is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace SF71?
There is 1 known substitute for SF71: VF5. Substitute compatibility should be verified for your specific system.
What is the NSN for SF71?
SF71 is cataloged in the U.S. Government catalog under NSN 4720-00-678-8731. 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.