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8J5221 — HOLDER SECTION,NIGHT VISION VIEW

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

8J5221: HOLDER SECTION,NIGHT VISION VIEW.

HOLDER SECTION,NIGHT VISION VIEW. Key specifications include material: PLASTIC TIP, body_style: CYLINDRICAL BUSHING MOUNTED, case_style: SQUARE, scale_type: NONLINEAR SINGLE SCALE, seal_width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, body_length: 0.594 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4710-01-185-4485, 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
8J5221
NSN: 4710-01-185-4485
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialPLASTIC TIP
body_styleCYLINDRICAL BUSHING MOUNTED
case_styleSQUARE
scale_typeNONLINEAR SINGLE SCALE
seal_width0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
body_length0.594 INCHES NOMINAL IN
cord_handleNOT PROVIDED
shaft_styleROUND, SLOTTED
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
shaft_length0.750 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter1.125 INCHES NOMINAL IN
NSN4710-01-185-4485
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 8J5221 · 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
SUBSTITUTES & CROSS-REFERENCES 1
25021Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8J5221?
8J5221 is a HOLDER SECTION,NIGHT VISION VIEW.
What parts can replace 8J5221?
There is 1 known substitute for 8J5221: 25021. Substitute compatibility should be verified for your specific system.
What is the NSN for 8J5221?
8J5221 is cataloged in the U.S. Government catalog under NSN 4710-01-185-4485. 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.