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AES01C438B25AW9M31 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AES01C438B25AW9M31: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.125 INCHES MINIMUM AND 1.313 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES THREADS. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-678-8596, 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
AES01C438B25AW9M31
NSN: 5305-01-678-8596
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
thread_class2A A
thread_length1.125 INCHES MINIMUM AND 1.313 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentALUMINUM AND ZINC OVERALL
width_between_flats0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
end_item_identification5420-01-545-7365
NSN5305-01-678-8596
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AES01C438B25AW9M31 · 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
•
SURFACE FINISH: 63.0 MICROINCHES THREADS
•
HEAD HEIGHT: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.125 INCHES MINIMUM AND 1.313 INCHES MAXIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAEJ429 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.4375 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES THREADS
HEAD HEIGHT0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
FASTENER LENGTH2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.125 INCHES MINIMUM AND 1.313 INCHES MAXIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAEJ429 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.4375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
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 1
ASME B18.24-2015Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 AES01C438B25AW9M31?
AES01C438B25AW9M31 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace AES01C438B25AW9M31?
There is 1 known substitute for AES01C438B25AW9M31: ASME B18.24-2015. Substitute compatibility should be verified for your specific system.
What is the NSN for AES01C438B25AW9M31?
AES01C438B25AW9M31 is cataloged in the U.S. Government catalog under NSN 5305-01-678-8596. 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.