HT4020-3-6 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4020-3-6: 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 UNDERCUT, grip_length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, head_height: 0.044 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-079-5159, 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

HT4020-3-6

NSN: 5305-01-079-5159
FSC: 5305 — Screws
CAGE: 17446 — HUCK INTERNATIONAL, INC (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
head_style	FLAT COUNTERSUNK UNDERCUT
grip_length	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
head_height	0.044 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
head_diameter	0.377 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
thread_length	0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
surface_finish	32.0 MICROINCHES THREADS
fastener_length	0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
NSN	5305-01-079-5159

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

HEAD HEIGHT: 0.044 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: 23-112 TY C FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK UNDERCUT

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES GRIP
HEAD HEIGHT	0.044 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
FASTENER LENGTH	0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
THREAD LENGTH	0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	23-112 TY C FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
THREAD DIRECTION	RIGHT-HAND
SPECIFICATION/STANDARD DATA	76301-ST3-652 MANUFACTURERS STANDARD

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

ST3M652C3-6DSame 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 HT4020-3-6?

HT4020-3-6 is a SCREW,CLOSE TOLERANCE.

What parts can replace HT4020-3-6?

There is 1 known substitute for HT4020-3-6: ST3M652C3-6D. Substitute compatibility should be verified for your specific system.

What is the NSN for HT4020-3-6?

HT4020-3-6 is cataloged in the U.S. Government catalog under NSN 5305-01-079-5159. This indicates validated use in U.S. government and defense supply chains.

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