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04-0221 — ILLUMINATOR,OPHTHALMIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

04-0221: ILLUMINATOR,OPHTHALMIC.

The ILLUMINATOR,OPHTHALMIC is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: ILLUMINATOR OPHTHALMIC. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-266-7611, 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
04-0221
NSN: 5315-00-266-7611
NIINs: 002667611, 015188374
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 89926 — NEW HOLLAND CONSTRUCTION (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyILLUMINATOR OPHTHALMIC
NSN5315-00-266-7611
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 04-0221 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CHAMFER LENGTH: 0.031 INCHES NOMINAL IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 1.375 INCHES NOMINAL IN
•
PIN CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
HARDNESS RATING: 58.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.500 INCHES NOMINAL IN
•
DIAMETER: 0.370 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CHAMFER LENGTH0.031 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH1.375 INCHES NOMINAL IN
PIN CHAMFER ANGLE45.0 DEGREES NOMINAL
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.500 INCHES NOMINAL IN
DIAMETER0.370 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
FEATURES PROVIDEDCASEHARDENED
HEAD STYLEPAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)
SUBSTITUTES & CROSS-REFERENCES 3
0040221-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
254621R91Reference document
Same NSN cross-reference
Reference document — Secondary reference
0040221Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 04-0221?
04-0221 is a ILLUMINATOR,OPHTHALMIC.
What parts can replace 04-0221?
There are 3 known substitutes for 04-0221: 0040221-4, 254621R91, 0040221. Substitute compatibility should be verified for your specific system.
What is the NSN for 04-0221?
04-0221 is cataloged in the U.S. Government catalog under NSN 5315-00-266-7611. 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.