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AIC618-5-4 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AIC618-5-4: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN, thread_length: 0.476 INCHES MINIMUM AND 0.526 INCHES MAXIMUM IN, screw_material: STEEL COMP H11, fastener_length: 0.736 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-296-1675, 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
AIC618-5-4
NSN: 5305-01-296-1675
FSC: 5305 — Screws
CAGE: 06725 — SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN
thread_length0.476 INCHES MINIMUM AND 0.526 INCHES MAXIMUM IN
screw_materialSTEEL COMP H11
fastener_length0.736 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
internal_drive_styleTORQUE SET
nominal_thread_diameter0.312 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
NSN5305-01-296-1675
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AIC618-5-4 · 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: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 0.736 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.476 INCHES MINIMUM AND 0.526 INCHES MAXIMUM IN
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH0.736 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6487 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.476 INCHES MINIMUM AND 0.526 INCHES MAXIMUM IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP H11
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH LBS
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 9
C7985-5-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
AIC985-5-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
5305PL1807261Reference document
Same NSN cross-reference
Reference document — Informative reference only
5305PL0784877Reference document
Same NSN cross-reference
Reference document — Informative reference only
H185-5-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
VT1694-5-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 AIC618-5-4?
AIC618-5-4 is a SCREW,MACHINE.
What parts can replace AIC618-5-4?
There are 9 known substitutes for AIC618-5-4: C7985-5-4, AIC985-5-4, 5305PL1807261 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AIC618-5-4?
AIC618-5-4 is cataloged in the U.S. Government catalog under NSN 5305-01-296-1675. 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.