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18Q5 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

18Q5: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.26 INCHES NOMINAL IN, head_diameter: 1.06 INCHES NOMINAL IN, thread_length: 1.50 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 5.00 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-643-6440, 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
18Q5
NSN: 5305-01-643-6440
FSC: 5305 — Screws
CAGE: 1SE17 — ENDRIES INTERNATIONAL, INC. DBA SERVTONICS, AN ENDRIES INTERNATIONAL, INC. (USA)
SPECIFICATIONS
head_styleROUND
head_height0.26 INCHES NOMINAL IN
head_diameter1.06 INCHES NOMINAL IN
thread_length1.50 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length5.00 INCHES NOMINAL IN
special_featuresINTERNAL DRIVE STYLE IS 0.50X0.50 SQUARE
thread_directionRIGHT-HAND
nominal_thread_diameter0.50 INCHES IN
thread_quantity_per_inch13
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-643-6440
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 18Q5 · 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
•
HEAD HEIGHT: 0.26 INCHES NOMINAL IN
•
FASTENER LENGTH: 5.00 INCHES NOMINAL IN
•
THREAD LENGTH: 1.50 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.50 INCHES IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.26 INCHES NOMINAL IN
FASTENER LENGTH5.00 INCHES NOMINAL IN
THREAD LENGTH1.50 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.50 INCHES IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURESINTERNAL DRIVE STYLE IS 0.50X0.50 SQUARE
THREAD QUANTITY PER INCH13
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.
5305-00-001-5016 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 18Q5?
18Q5 is a SCREW,MACHINE.
What is the NSN for 18Q5?
18Q5 is cataloged in the U.S. Government catalog under NSN 5305-01-643-6440. 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.