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5666-40-431-6115 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5666-40-431-6115: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT CHAMFER, head_height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, thread_length: 0.639 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-461-8396, 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
5666-40-431-6115
NSN: 5305-01-461-8396
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleFLAT CHAMFER
head_height0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
thread_length0.639 INCHES MINIMUM IN
fastener_length0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
special_featuresSELF-LOCKING
thread_directionRIGHT-HAND
width_across_flats0.250 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.312 INCHES IN
NSN5305-01-461-8396
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5666-40-431-6115 · 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
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.639 INCHES MINIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMF593 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
HEAD HEIGHT0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
FASTENER LENGTH0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD LENGTH0.639 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTMF593 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESSELF-LOCKING
INTERNAL DRIVE STYLEHEXAGON
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 1
211096652Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 5666-40-431-6115?
5666-40-431-6115 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 5666-40-431-6115?
There is 1 known substitute for 5666-40-431-6115: 211096652. Substitute compatibility should be verified for your specific system.
What is the NSN for 5666-40-431-6115?
5666-40-431-6115 is cataloged in the U.S. Government catalog under NSN 5305-01-461-8396. 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.