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566-6405741-SDGD-B25 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

566-6405741-SDGD-B25: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 OVERALL, thread_class: 2A A, thread_direction: RIGHT-HAND, end_item_identification: STERN DIVING GEAR FLAP OUTBOARD ASSY AND DETAIL, nominal_thread_diameter: 0.500 INCHES IN, thread_quantity_per_inch: 13. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-534-3753, 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
566-6405741-SDGD-B25
NSN: 5305-01-534-3753
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500 OVERALL
thread_class2A A
thread_directionRIGHT-HAND
end_item_identificationSTERN DIVING GEAR FLAP OUTBOARD ASSY AND DETAIL
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch13
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-534-3753
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 566-6405741-SDGD-B25 · 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
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 13
•
MATERIAL: NICKEL ALLOY K-500 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
END ITEM IDENTIFICATIONSTERN DIVING GEAR FLAP OUTBOARD ASSY AND DETAIL
THREAD QUANTITY PER INCH13
MATERIALNICKEL ALLOY K-500 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 3
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-S-1222 TY 1 GR-500Reference document
Same NSN cross-reference
Reference document — Secondary reference
211069127Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 566-6405741-SDGD-B25?
566-6405741-SDGD-B25 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 566-6405741-SDGD-B25?
There are 3 known substitutes for 566-6405741-SDGD-B25: MIL-DTL-1222, MIL-S-1222 TY 1 GR-500, 211069127. Substitute compatibility should be verified for your specific system.
What is the NSN for 566-6405741-SDGD-B25?
566-6405741-SDGD-B25 is cataloged in the U.S. Government catalog under NSN 5305-01-534-3753. 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.