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AESS1A25C500EA1M26 — SCREW,TAPPING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AESS1A25C500EA1M26: SCREW,TAPPING.

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, fastener_length: 0.500 INCHES NOMINAL IN, special_features: OPTIONAL LOCKING FEATURE IAW ASME OPTIONS, surface_treatment: ZINC OVERALL, internal_drive_style: W/O INTERNAL DRIVE. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-681-8633, 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
AESS1A25C500EA1M26
NSN: 5305-01-681-8633
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
fastener_length0.500 INCHES NOMINAL IN
special_featuresOPTIONAL LOCKING FEATURE IAW ASME OPTIONS
surface_treatmentZINC OVERALL
internal_drive_styleW/O INTERNAL DRIVE
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
specification/standard_data05047-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nonmachine_nominal_thread_diameter0.250 INCHES IN
material_document_and_classificationCARBON STEEL UNS G10050,060,080,090,100,110,120,130 OR 150 PER ASTM F844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencySCREW,TAPPING,REGULAR HEX HEAD,INDENTED,UNSLOTTED
surface_treatment_document_and_classificationHOT-DIP ZINC COATING PER ASTM F2329 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5305-01-681-8633
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AESS1A25C500EA1M26 · 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: 0.250 INCHES IN
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: HOT-DIP ZINC COATING PER ASTM F2329 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
MATERIAL DOCUMENT AND CLASSIFICATION: CARBON STEEL UNS G10050,060,080,090,100,110,120,130 OR 150 PER ASTM F844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HEAD STYLE: HEXAGON
•
SPECIFICATION/STANDARD DATA: 05047-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
NONMACHINE NOMINAL THREAD DIAMETER0.250 INCHES IN
FASTENER LENGTH0.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONHOT-DIP ZINC COATING PER ASTM F2329 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
MATERIAL DOCUMENT AND CLASSIFICATIONCARBON STEEL UNS G10050,060,080,090,100,110,120,130 OR 150 PER ASTM F844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEHEXAGON
SPECIFICATION/STANDARD DATA05047-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SPECIAL FEATURESOPTIONAL LOCKING FEATURE IAW ASME OPTIONS
SURFACE TREATMENTZINC OVERALL
INTERNAL DRIVE STYLEW/O INTERNAL DRIVE
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 AESS1A25C500EA1M26?
AESS1A25C500EA1M26 is a SCREW,TAPPING.
What is the NSN for AESS1A25C500EA1M26?
AESS1A25C500EA1M26 is cataloged in the U.S. Government catalog under NSN 5305-01-681-8633. 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.