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273425 — LENS BLANK,OPHTHALMIC,MULTIFOCAL

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

273425: LENS BLANK,OPHTHALMIC,MULTIFOCAL.

LENS BLANK,OPHTHALMIC,MULTIFOCAL. Key specifications include end_item_identification: 6540-01-604-9603 OPHTHALMIC LENS FABRICATION SYSTEM, part_name_assigned_by_controlling_agency: LENS MULTIFOCAL 75MM FT28 2 BASE 3.00 ADD LEFT MM. This part is cataloged in the U.S.

Government catalog under NSN 4710-00-330-6455, 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
273425
NSN: 4710-00-330-6455
NIINs: 003306455, 016133761
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
special_featuresMULTIFOCAL LENS, 75MM FT28 2 BASE 3.00 ADD RIGHT; FOR USE WITH END ITEM NSN 6540-01-604-9603 MULTIVISION FABRICATION SYSTEM MM
end_item_identification6540-01-604-9603 OPHTHALMIC LENS FABRICATION SYSTEM
part_name_assigned_by_controlling_agencyLENS MULTIFOCAL 75MM FT28 2 BASE 3.00 ADD LEFT MM
NSN4710-00-330-6455
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 273425 · 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
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SEAT ANGLE IN DEG: 45.0 SINGLE END
•
DESIGN FORM: PREBENT
•
MATING END QUANTITY: 2 SINGLE END
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THREAD DIRECTION: RIGHT-HAND SINGLE END
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NOMINAL THREAD SIZE: 1.500 INCHES SINGLE END IN
•
END CONNECTION STYLE: SWIVEL NUT, FLARE SINGLE END
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TUBE OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 2 SINGLE END
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG45.0 SINGLE END
DESIGN FORMPREBENT
MATING END QUANTITY2 SINGLE END
THREAD DIRECTIONRIGHT-HAND SINGLE END
NOMINAL THREAD SIZE1.500 INCHES SINGLE END IN
END CONNECTION STYLESWIVEL NUT, FLARE SINGLE END
TUBE OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
BOLT HOLE QUANTITY2 SINGLE END
THREAD CLASS3B SINGLE END
MATERIALSTEEL TUBING
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 273425?
273425 is a LENS BLANK,OPHTHALMIC,MULTIFOCAL.
What is the NSN for 273425?
273425 is cataloged in the U.S. Government catalog under NSN 4710-00-330-6455. 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.