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AES43M508020BC4A81 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AES43M508020BC4A81: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 4.86 MILLIMETERS MINIMUM AND 5.00 MILLIMETERS MAXIMUM MM, head_diameter: 8.27 MILLIMETERS MINIMUM AND 8.50 MILLIMETERS MAXIMUM MM, thread_length: 20.0 MILLIMETERS NOMINAL MM, fastener_length: 20.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-656-2823, 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
AES43M508020BC4A81
NSN: 5305-01-656-2823
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height4.86 MILLIMETERS MINIMUM AND 5.00 MILLIMETERS MAXIMUM MM
head_diameter8.27 MILLIMETERS MINIMUM AND 8.50 MILLIMETERS MAXIMUM MM
thread_length20.0 MILLIMETERS NOMINAL MM
fastener_length20.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_across_flats4.0 MILLIMETERS NOMINAL MM
internal_drive_styleHEXAGON
end_item_identification1025-99-463-7551
nominal_thread_diameter5.0 MILLIMETERS MM
NSN5305-01-656-2823
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AES43M508020BC4A81 · 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: 4.0 MILLIMETERS NOMINAL MM
•
HEAD HEIGHT: 4.86 MILLIMETERS MINIMUM AND 5.00 MILLIMETERS MAXIMUM MM
•
EXTERNAL THREAD TOLERANCE CLASS: 6G G
•
FASTENER LENGTH: 20.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 0.8
•
THREAD LENGTH: 20.0 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 5.0 MILLIMETERS MM
•
HEAD STYLE: FLAT CHAMFER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS4.0 MILLIMETERS NOMINAL MM
HEAD HEIGHT4.86 MILLIMETERS MINIMUM AND 5.00 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS6G G
FASTENER LENGTH20.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS0.8
THREAD LENGTH20.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER5.0 MILLIMETERS MM
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTZINC AND CHROMATE OVERALL
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 2
14210418Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B18.24-2004Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 AES43M508020BC4A81?
AES43M508020BC4A81 is a SCREW,CAP,SOCKET HEAD.
What parts can replace AES43M508020BC4A81?
There are 2 known substitutes for AES43M508020BC4A81: 14210418, B18.24-2004. Substitute compatibility should be verified for your specific system.
What is the NSN for AES43M508020BC4A81?
AES43M508020BC4A81 is cataloged in the U.S. Government catalog under NSN 5305-01-656-2823. This indicates validated use in U.S. government and defense supply chains.
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