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AES20K250A00SB7A31 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AES20K250A00SB7A31: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, head_style: FLAT CHAMFER, head_height: 0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.357 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_length: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-706-3284, 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
AES20K250A00SB7A31
NSN: 5305-01-706-3284
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
head_styleFLAT CHAMFER
head_height0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.357 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_length0.375 INCHES NOMINAL IN
shoulder_shapeROUND OVERALL
fastener_length1.00 INCHES NOMINAL IN
shoulder_length0.625 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
shoulder_diameter0.2460 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM OVERALL IN
surface_treatmentPASSIVATE OVERALL
NSN5305-01-706-3284
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AES20K250A00SB7A31 · 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: 0.125 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.00 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.625 INCHES NOMINAL OVERALL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.2460 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM OVERALL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.125 INCHES NOMINAL IN
HEAD HEIGHT0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
FASTENER LENGTH1.00 INCHES NOMINAL IN
SHOULDER LENGTH0.625 INCHES NOMINAL OVERALL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.2460 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM OVERALL IN
THREAD LENGTH0.375 INCHES NOMINAL IN
SHOULDER SHAPEROUND OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASME B18.24-2020 304, 530400, ANNEALED, AUSTENITIC CR-NI STAINLESS STEEL NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.1900 INCHES IN
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 AES20K250A00SB7A31?
AES20K250A00SB7A31 is a SCREW,SHOULDER.
What is the NSN for AES20K250A00SB7A31?
AES20K250A00SB7A31 is cataloged in the U.S. Government catalog under NSN 5305-01-706-3284. 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.