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HT4027-4-12 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT4027-4-12: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: OVAL COUNTERSUNK, thread_class: 3A A, head_diameter: 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, thread_length: 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, fastener_length: 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-487-6866, 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
HT4027-4-12
NSN: 5305-01-487-6866
FSC: 5305 — Screws
CAGE: 06725 — SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleOVAL COUNTERSUNK
thread_class3A A
head_diameter0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
thread_length0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
fastener_length0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleHIGH-TORQUE
thread_quantity_per_inch28
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF)
material_document_and_classification23-118 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5305-01-487-6866
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT4027-4-12 · 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: 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 23-118 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
HEAD STYLE: OVAL COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: HIGH-TORQUE
•
THREAD CLASS: 3A A
•
THREAD QUANTITY PER INCH: 28
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD LENGTH0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION23-118 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEOVAL COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHIGH-TORQUE
THREAD CLASS3A A
THREAD QUANTITY PER INCH28
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
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 3
ST3M557-4-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WC4027-4-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11923-4-12Same 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 HT4027-4-12?
HT4027-4-12 is a SCREW,CLOSE TOLERANCE.
What parts can replace HT4027-4-12?
There are 3 known substitutes for HT4027-4-12: ST3M557-4-12, WC4027-4-12, 11923-4-12. Substitute compatibility should be verified for your specific system.
What is the NSN for HT4027-4-12?
HT4027-4-12 is cataloged in the U.S. Government catalog under NSN 5305-01-487-6866. This indicates validated use in U.S. government and defense supply chains.
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