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AESS1B250750WH3D71 — SCREW,TAPPING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AESS1B250750WH3D71: SCREW,TAPPING.

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DISHED HEXAGON, head_height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, fastener_length: 0.750 INCHES NOMINAL IN, surface_treatment: ZINC OVERALL, width_between_flats: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-730-8799, 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
AESS1B250750WH3D71
NSN: 5305-01-730-8799
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDISHED HEXAGON
head_height0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
fastener_length0.750 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
width_between_flats0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
internal_drive_styleW/O INTERNAL DRIVE
end_item_identification4940-017077585
nonmachine_thread_styleDOG TYPE (TYPE B OR C)
specification/standard_data05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nonmachine_nominal_thread_diameter0.2500 INCHES IN
material_document_and_classificationASME B 18.6.3 TAPPING OR DRIVE SCREW INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5305-01-730-8799
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AESS1B250750WH3D71 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.2500 INCHES IN
•
HEAD HEIGHT: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941, ZINC COATING FE/ZN, TYPE 3A INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL A
•
NONMACHINE THREAD STYLE: DOG TYPE (TYPE B OR C)
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASME B 18.6.3 TAPPING OR DRIVE SCREW INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
•
HEAD STYLE: DISHED HEXAGON
•
SPECIFICATION/STANDARD DATA: 05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
NONMACHINE NOMINAL THREAD DIAMETER0.2500 INCHES IN
HEAD HEIGHT0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.750 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM F1941, ZINC COATING FE/ZN, TYPE 3A INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL A
NONMACHINE THREAD STYLEDOG TYPE (TYPE B OR C)
MATERIAL DOCUMENT AND CLASSIFICATIONASME B 18.6.3 TAPPING OR DRIVE SCREW INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEDISHED HEXAGON
SPECIFICATION/STANDARD DATA05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SURFACE TREATMENTZINC OVERALL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AESS1B250750WH3D71?
AESS1B250750WH3D71 is a SCREW,TAPPING.
What is the NSN for AESS1B250750WH3D71?
AESS1B250750WH3D71 is cataloged in the U.S. Government catalog under NSN 5305-01-730-8799. 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.