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Technical Data Sheet
PartsTable / COMPONENT / 25571-1
25571-1 ✓ Verified by PartsTable
Equip · 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 equip®Fiber Optic Adapter Cable is made of superior materials to ensure an insertion loss, return loss, and endface geometry connection. The Fiber Optic Patch Cord series comes with a comprehensive collection of lengths and connectors to fulfill your demand for the deployment. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-083-9519, 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
25571-1
NSN: 4720-00-083-9519
FSC: 4720
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
length0.0550 INCHES NOMINAL SHOULDER IN
materialALUMINUM BODY
body_size23
hole_typeDRILLED
body_styleSTANDARD ROUND, REAR MOUNTING FLANGE
head_styleDOUBLE HEXAGON W/HOLE
shaft_typeROUND, THREADED SINGLE SHAFT
bend_radius2.000 INCHES NOMINAL IN
head_height0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
outer_radius2.000 INCHES NOMINAL IN
pilot_length0.1250 INCHES NOMINAL IN
shaft_length0.2600 INCHES NOMINAL SINGLE SHAFT IN
NSN4720-00-083-9519
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 25571-1 · Equip ⚠ 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 ARM LENGTH: 1.500 INCHES NOMINAL IN
•
INSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
FIRST ARM LENGTH: 1.500 INCHES NOMINAL IN
•
WALL THICKNESS: 0.219 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TWO BEND MODIFIED "U"
•
WORKING LENGTH: 15.000 INCHES NOMINAL IN
•
BEND RADIUS: 2.000 INCHES NOMINAL IN
•
OUTER RADIUS: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SECOND ARM LENGTH1.500 INCHES NOMINAL IN
INSIDE DIAMETER2.000 INCHES NOMINAL IN
FIRST ARM LENGTH1.500 INCHES NOMINAL IN
WALL THICKNESS0.219 INCHES NOMINAL IN
STYLE DESIGNATORTWO BEND MODIFIED "U"
WORKING LENGTH15.000 INCHES NOMINAL IN
BEND RADIUS2.000 INCHES NOMINAL IN
OUTER RADIUS2.000 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
255711Interchangeable
interchangeable cross-reference
interchangeable
APS37Interchangeable
interchangeable cross-reference
interchangeable
MILS2335TYPE1HCTMInterchangeable
interchangeable cross-reference
interchangeable
TYPE1HCTMK11Interchangeable
interchangeable cross-reference
interchangeable
255711CInterchangeable
Same NIIN cross-reference
interchangeable
255711-00Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25571-1?
25571-1 is a SYNCHRO,CONTROL TRANSFORMER manufactured by Equip.
What parts can replace 25571-1?
There are 7 known substitutes for 25571-1: 255711, APS37, MILS2335TYPE1HCTM and 4 more. Substitute compatibility should be verified for your specific system.
Is 25571-1 still available?
25571-1 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