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AES20U750C00BB3L71 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AES20U750C00BB3L71: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.977 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, thread_length: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-699-9755, 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
AES20U750C00BB3L71
NSN: 5305-01-699-9755
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.977 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
thread_length0.875 INCHES NOMINAL IN
shoulder_shapeROUND ALL SHOULDERS
fastener_length3.000 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length2.125 INCHES NOMINAL ALL SHOULDERS IN
thread_directionRIGHT-HAND
shoulder_diameter0.746 INCHES MINIMUM AND 0.748 INCHES MAXIMUM ALL SHOULDERS IN
NSN5305-01-699-9755
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AES20U750C00BB3L71 · 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: 0.375 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.000 INCHES NOMINAL IN
•
SHOULDER LENGTH: 2.125 INCHES NOMINAL ALL SHOULDERS IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-DTL-13924D, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.746 INCHES MINIMUM AND 0.748 INCHES MAXIMUM ALL SHOULDERS IN
•
THREAD LENGTH: 0.875 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND ALL SHOULDERS
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
HEAD HEIGHT0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FASTENER LENGTH3.000 INCHES NOMINAL IN
SHOULDER LENGTH2.125 INCHES NOMINAL ALL SHOULDERS IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-DTL-13924D, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.746 INCHES MINIMUM AND 0.748 INCHES MAXIMUM ALL SHOULDERS IN
THREAD LENGTH0.875 INCHES NOMINAL IN
SHOULDER SHAPEROUND ALL SHOULDERS
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574, ALLOY STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
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 AES20U750C00BB3L71?
AES20U750C00BB3L71 is a SCREW,SHOULDER.
What parts can replace AES20U750C00BB3L71?
There is 1 known substitute for AES20U750C00BB3L71: B18.24-2015. Substitute compatibility should be verified for your specific system.
What is the NSN for AES20U750C00BB3L71?
AES20U750C00BB3L71 is cataloged in the U.S. Government catalog under NSN 5305-01-699-9755. 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.