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HT4020-5-11Y — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT4020-5-11Y: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, head_height: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, thread_length: 0.531 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-268-5976, 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
HT4020-5-11Y
NSN: 5305-01-268-5976
FSC: 5305 — Screws
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleFLAT COUNTERSUNK UNDERCUT
head_height0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
thread_length0.531 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
shoulder_length0.611 INCHES MINIMUM AND 0.613 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-268-5976
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT4020-5-11Y · 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
•
HEAD HEIGHT: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.611 INCHES MINIMUM AND 0.613 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.531 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.313 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
FASTENER LENGTH1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
SHOULDER LENGTH0.611 INCHES MINIMUM AND 0.613 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.531 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.313 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
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 2
3M902C5-11DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11879C5-11DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 HT4020-5-11Y?
HT4020-5-11Y is a SCREW,SHOULDER.
What parts can replace HT4020-5-11Y?
There are 2 known substitutes for HT4020-5-11Y: 3M902C5-11D, 11879C5-11D. Substitute compatibility should be verified for your specific system.
What is the NSN for HT4020-5-11Y?
HT4020-5-11Y is cataloged in the U.S. Government catalog under NSN 5305-01-268-5976. 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.