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Technical Data Sheet

448/16403 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

448/16403: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include special_features: 22.5MMX85MMX3MM, part_name_assigned_by_controlling_agency: WASHER, FLAT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-668-5557, 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
448/16403
NSN: 5310-01-668-5557
FSC: 5310 — Nuts and Washers
CAGE: 0JKF0 — JCB INC. (USA)
SPECIFICATIONS
special_features22.5MMX85MMX3MM
part_name_assigned_by_controlling_agencyWASHER, FLAT
NSN5310-01-668-5557
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 448/16403 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES22.5MMX85MMX3MM
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 448/16403?
448/16403 is a WASHER,FLAT.
What is the NSN for 448/16403?
448/16403 is cataloged in the U.S. Government catalog under NSN 5310-01-668-5557. This indicates validated use in U.S. government and defense supply chains.
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