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628446 — WASHER,FLAT

✓ Government record, cited
Esselte · NUT WASHER
PRODUCT OVERVIEW

628446: WASHER,FLAT.

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This part is cataloged in the U.S. Government catalog under NSN 5310-00-018-0243, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
628446
NSN: 5310-00-018-0243
FSC: 5310 — Nuts and Washers
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.020 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
hole_diameter0.398 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
surface_finish40.0 MICROINCHES TOP
overall_diameter0.540 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-018-0243
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 628446 · Esselte ⚠ 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
•
SURFACE FINISH: 40.0 MICROINCHES TOP
•
OVERALL DIAMETER: 0.540 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.398 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH40.0 MICROINCHES TOP
SURFACE FINISH40.0 MICROINCHES BOTTOM
OVERALL DIAMETER0.540 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL CORROSION RESISTING OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.398 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
THICKNESS0.020 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
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 628446?
628446 is a WASHER,FLAT manufactured by Esselte.
What is the NSN for 628446?
628446 is cataloged in the U.S. Government catalog under NSN 5310-00-018-0243. This indicates validated use in U.S. government and defense supply chains.
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