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D503688 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

D503688: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON EXTENDED WASHER, thread_class: 10B, fastener_length: 0.75 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: EXPEDITIONARY SELF, thread_quantity_per_inch: 16. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-699-3440, 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
D503688
NSN: 5305-01-699-3440
FSC: 5305 — Screws
CAGE: 59618 — ALLIANCE LAUNDRY SYSTEMS LLC (USA)
SPECIFICATIONS
head_styleHEXAGON EXTENDED WASHER
thread_class10B
fastener_length0.75 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identificationEXPEDITIONARY SELF
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-699-3440
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: D503688 · 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: 0.75 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 10B
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.75 INCHES NOMINAL IN
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS10B
END ITEM IDENTIFICATIONEXPEDITIONARY SELF
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
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

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 D503688?
D503688 is a SCREW,MACHINE.
What is the NSN for D503688?
D503688 is cataloged in the U.S. Government catalog under NSN 5305-01-699-3440. 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.