HT4020-4-10 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4020-4-10: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, grip_length: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, head_height: 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-044-2243, 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

HT4020-4-10

NSN: 5305-01-044-2243
FSC: 5305 — Screws
CAGE: 73197 — HI-SHEAR CORPORATION (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT COUNTERSUNK UNDERCUT
grip_length	0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
head_height	0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter	0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
thread_length	0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
surface_finish	32.0 MICROINCHES THREADS
fastener_length	1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
special_features	CETYL ALCOHOL LUBRICATION
thread_direction	RIGHT-HAND
NSN	5305-01-044-2243

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

HEAD HEIGHT: 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK UNDERCUT

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES GRIP
HEAD HEIGHT	0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
FASTENER LENGTH	1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
THREAD LENGTH	0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
GRIP DIAMETER	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN

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 2

CHT4020-4-10Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

ST3M652C4-10DSame 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 HT4020-4-10?

HT4020-4-10 is a SCREW,CLOSE TOLERANCE.

What parts can replace HT4020-4-10?

There are 2 known substitutes for HT4020-4-10: CHT4020-4-10, ST3M652C4-10D. Substitute compatibility should be verified for your specific system.

What is the NSN for HT4020-4-10?

HT4020-4-10 is cataloged in the U.S. Government catalog under NSN 5305-01-044-2243. This indicates validated use in U.S. government and defense supply chains.

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