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HT4055-4-13 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT4055-4-13: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, head_diameter: 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-131-4357, 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
HT4055-4-13
NSN: 5305-01-131-4357
FSC: 5305 — Screws
CAGE: C4293 — FAIRCHILD FASTENERS EUROPE - VSD GMBH (DEU)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleFLAT COUNTERSUNK
grip_length0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
thread_length0.358 INCHES NOMINAL IN
fastener_length1.155 INCHES MINIMUM AND 1.185 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
surface_treatmentPASSIVATE OVERALL
internal_drive_styleHIGH-TORQUE
NSN5305-01-131-4357
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT4055-4-13 · 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
•
FASTENER LENGTH: 1.155 INCHES MINIMUM AND 1.185 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.358 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 23-112 TY C FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
•
GRIP DIAMETER: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.155 INCHES MINIMUM AND 1.185 INCHES MAXIMUM IN
THREAD LENGTH0.358 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION23-112 TY C FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
INTERNAL DRIVE STYLEHIGH-TORQUE
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
ST3M751-4-13Same 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 HT4055-4-13?
HT4055-4-13 is a SCREW,CLOSE TOLERANCE.
What parts can replace HT4055-4-13?
There is 1 known substitute for HT4055-4-13: ST3M751-4-13. Substitute compatibility should be verified for your specific system.
What is the NSN for HT4055-4-13?
HT4055-4-13 is cataloged in the U.S. Government catalog under NSN 5305-01-131-4357. 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.