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621-0441-000 — SCREW,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

621-0441-000: SCREW,ASSEMBLED WASHER.

The SCREW,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: PAN, thread_class: 2A A, head_diameter: 0.322 INCHES NOMINAL IN, thread_length: 0.313 INCHES NOMINAL IN, fastener_length: 0.313 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-116-0850, 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
621-0441-000
NSN: 5305-01-116-0850
FSC: 5305 — Screws
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_stylePAN
thread_class2A A
head_diameter0.322 INCHES NOMINAL IN
thread_length0.313 INCHES NOMINAL IN
fastener_length0.313 INCHES NOMINAL IN
washer_quantity1
special_featuresDYKEM STAIN FINISH
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
primary_washer_styleFLAT
nominal_thread_diameter0.138 INCHES IN
NSN5305-01-116-0850
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 621-0441-000 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FASTENER LENGTH: 0.313 INCHES NOMINAL IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.312 INCHES NOMINAL IN
•
THREAD LENGTH: 0.313 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: PAN
•
PRIMARY WASHER STYLE: FLAT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.313 INCHES NOMINAL IN
PRIMARY WASHER OUTSIDE DIAMETER0.312 INCHES NOMINAL IN
THREAD LENGTH0.313 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEPAN
PRIMARY WASHER STYLEFLAT
THREAD DIRECTIONRIGHT-HAND
PRIMARY WASHER MATERIAL THICKNESS0.022 INCHES NOMINAL IN
SPECIAL FEATURESDYKEM STAIN FINISH
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 621-0441-000?
621-0441-000 is a SCREW,ASSEMBLED WASHER.
What is the NSN for 621-0441-000?
621-0441-000 is cataloged in the U.S. Government catalog under NSN 5305-01-116-0850. 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.