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6665643 PART 22 — SCREW,DRIVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6665643 PART 22: SCREW,DRIVE.

The SCREW,DRIVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: ROUND, head_height: 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN, pilot_length: 0.062 INCHES NOMINAL IN, head_diameter: 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN, pilot_diameter: 0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-442-3278, 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
6665643 PART 22
NSN: 5305-01-442-3278
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleROUND
head_height0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
pilot_length0.062 INCHES NOMINAL IN
head_diameter0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
pilot_diameter0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL IN
special_featuresTEMPLATING MOUNTING HOLE LOCATIONS FROM APPLICABLE TEST DATA PLATE AND DRILL FOUR .191 INCH DIAN HOLES, .50 INCHES DEEP FOR DRIVE SCREWS. IN
surface_treatmentZINC OVERALL
nonmachine_thread_styleDRIVE SCREW (TYPE U)
nonmachine_nominal_thread_diameter0.212 INCHES IN
material_document_and_classificationFED 18-8 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5305-01-442-3278
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6665643 PART 22 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.212 INCHES IN
•
HEAD HEIGHT: 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
NONMACHINE THREAD STYLE: DRIVE SCREW (TYPE U)
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED 18-8 FED STD ALL MATERIAL RESPONSES OVERALL
•
HEAD STYLE: ROUND
•
PILOT DIAMETER: 0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NONMACHINE NOMINAL THREAD DIAMETER0.212 INCHES IN
HEAD HEIGHT0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
FASTENER LENGTH0.500 INCHES NOMINAL IN
NONMACHINE THREAD STYLEDRIVE SCREW (TYPE U)
MATERIAL DOCUMENT AND CLASSIFICATIONFED 18-8 FED STD ALL MATERIAL RESPONSES OVERALL
HEAD STYLEROUND
PILOT DIAMETER0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
PILOT LENGTH0.062 INCHES NOMINAL IN
SPECIAL FEATURESTEMPLATING MOUNTING HOLE LOCATIONS FROM APPLICABLE TEST DATA PLATE AND DRILL FOUR .191 INCH DIAN HOLES, .50 INCHES DEEP FOR DRIVE SCREWS. IN
SURFACE TREATMENTZINC OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 3
91654A291Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6665642 PART 17Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7002638 PART 7Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 6665643 PART 22?
6665643 PART 22 is a SCREW,DRIVE.
What parts can replace 6665643 PART 22?
There are 3 known substitutes for 6665643 PART 22: 91654A291, 6665642 PART 17, 7002638 PART 7. Substitute compatibility should be verified for your specific system.
What is the NSN for 6665643 PART 22?
6665643 PART 22 is cataloged in the U.S. Government catalog under NSN 5305-01-442-3278. 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.