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HT4020-5-10Y — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT4020-5-10Y: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, head_height: 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, thread_length: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-260-9342, 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
HT4020-5-10Y
NSN: 5305-01-260-9342
FSC: 5305 — Screws
CAGE: 06950 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK UNDERCUT
head_height0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
thread_length0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
shoulder_shapeROUND OVERALL
fastener_length1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
shoulder_length0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM ALL SHOULDERS IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM ALL SHOULDERS IN
NSN5305-01-260-9342
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT4020-5-10Y · 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: 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM ALL SHOULDERS IN
•
SHOULDER DIAMETER: 0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM ALL SHOULDERS IN
•
THREAD LENGTH: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN
FASTENER LENGTH1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
SHOULDER LENGTH0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM ALL SHOULDERS IN
SHOULDER DIAMETER0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM ALL SHOULDERS IN
THREAD LENGTH0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
SHOULDER SHAPEROUND OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 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.
5305-00-001-5016 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HT4020-5-10Y?
HT4020-5-10Y is a SCREW,SHOULDER.
What is the NSN for HT4020-5-10Y?
HT4020-5-10Y is cataloged in the U.S. Government catalog under NSN 5305-01-260-9342. 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.