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HT4025L4-17 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT4025L4-17: 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: 1.052 INCHES MINIMUM AND 1.072 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 5305-00-364-9544, 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
HT4025L4-17
NSN: 5305-00-364-9544
FSC: 5305 — Screws
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleFLAT COUNTERSUNK
grip_length1.052 INCHES MINIMUM AND 1.072 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_length0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
fastener_length1.516 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentPASSIVATE OVERALL
internal_drive_styleHIGH-TORQUE
NSN5305-00-364-9544
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT4025L4-17 · 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: 1.516 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 23-112 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: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
•
GRIP DIAMETER: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.516 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN
THREAD LENGTH0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 3
10125241Reference document
Same NSN cross-reference
Reference document — Informative reference only
11905-4L17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M454-4L17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 HT4025L4-17?
HT4025L4-17 is a SCREW,CLOSE TOLERANCE.
What parts can replace HT4025L4-17?
There are 3 known substitutes for HT4025L4-17: 10125241, 11905-4L17, ST3M454-4L17. Substitute compatibility should be verified for your specific system.
What is the NSN for HT4025L4-17?
HT4025L4-17 is cataloged in the U.S. Government catalog under NSN 5305-00-364-9544. 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.