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1645-3-522 — 1645-3-522

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1645-3-522: 1645-3-522.

The 1645-3-522 is a the manufacturer industrial component. Key specifications include material: PLASTIC, inside_diameter: 0.250 INCHES NOMINAL IN, outside_diameter: 0.750 INCHES NOMINAL IN, screw_drive_type: SLOT, style_designator: ROUND, attachment_method: SETSCREWS. This part is cataloged in the U.S.

Government catalog under NSN 5355-01-378-2001, 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
1645-3-522
NSN: 5355-01-378-2001
FSC: 5355 — Knobs and Pointers
CAGE: 05616 — COSMO CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC
inside_diameter0.250 INCHES NOMINAL IN
outside_diameter0.750 INCHES NOMINAL IN
screw_drive_typeSLOT
style_designatorROUND
attachment_methodSETSCREWS
overall_thickness0.438 INCHES NOMINAL IN
setscrew_hole_quantity1
shaft_accommodation_styleROUND
gripping_surface_conditionGRIP AID
distance_from_hole_center_to_knob/skirt_base0.219 INCHES NOMINAL IN
NSN5355-01-378-2001
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 1645-3-522 TITLE COMPONENT PN 1645-3-522 MFR 1645-3-522
KEY FEATURES
•
DISTANCE FROM HOLE CENTER TO KNOB/SKIRT BASE: 0.219 INCHES NOMINAL IN
•
SHAFT ACCOMMODATION STYLE: ROUND
•
OVERALL THICKNESS: 0.438 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
SETSCREW HOLE QUANTITY: 1
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
GRIPPING SURFACE CONDITION: GRIP AID
TECHNICAL CHARACTERISTICS
DISTANCE FROM HOLE CENTER TO KNOB/SKIRT BASE0.219 INCHES NOMINAL IN
SHAFT ACCOMMODATION STYLEROUND
OVERALL THICKNESS0.438 INCHES NOMINAL IN
STYLE DESIGNATORROUND
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
SETSCREW HOLE QUANTITY1
INSIDE DIAMETER0.250 INCHES NOMINAL IN
GRIPPING SURFACE CONDITIONGRIP AID
COLORBLACK
SCREW DRIVE TYPESLOT
OTHER ITEMS IN FSC 5355 — Knobs and Pointers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5355-00-000-5777 5355-00-001-2029 5355-00-001-2403 5355-00-001-4109 5355-00-001-4677 5355-00-001-4724 5355-00-001-4730 5355-00-001-4734
SUBSTITUTES & CROSS-REFERENCES 1
520570-047Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1645-3-522?
1645-3-522 is a 1645-3-522.
What parts can replace 1645-3-522?
There is 1 known substitute for 1645-3-522: 520570-047. Substitute compatibility should be verified for your specific system.
What is the NSN for 1645-3-522?
1645-3-522 is cataloged in the U.S. Government catalog under NSN 5355-01-378-2001. 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.