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Technical Data Sheet
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500K2668-351 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

500K2668-351: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, head_diameter: 0.285 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, screw_material: STEEL, fastener_length: 0.875 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, countersink_angle: 100.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-550-1320, 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
500K2668-351
NSN: 5305-01-550-1320
FSC: 5305 — Screws
CAGE: 5RQL2 — DRS ENVIRONMENTAL SYSTEMS INC (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
head_diameter0.285 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE 1
end_item_identification4120-01-516-4715
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentZINC
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-550-1320
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 500K2668-351 · 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
•
SCREW SURFACE TREATMENT: ZINC
•
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
COUNTERSINK ANGLE: 100.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENTZINC
FASTENER LENGTH0.875 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
END ITEM IDENTIFICATION4120-01-516-4715
THREAD QUANTITY PER INCH32
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 500K2668-351?
500K2668-351 is a SCREW,MACHINE.
What is the NSN for 500K2668-351?
500K2668-351 is cataloged in the U.S. Government catalog under NSN 5305-01-550-1320. This indicates validated use in U.S. government and defense supply chains.
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