HT4020-4-19AX — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4020-4-19AX: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, head_height: 0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, thread_length: 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-142-6284, 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

HT4020-4-19AX

NSN: 5305-01-142-6284
FSC: 5305 — Screws
CAGE: 06950 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	STEEL COMP XM-13 OVERALL
head_style	FLAT COUNTERSUNK UNDERCUT
head_height	0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
thread_length	0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	1.640 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
shoulder_length	1.111 INCHES MINIMUM AND 1.133 INCHES MAXIMUM FIRST SHOULDER IN
special_features	FURNISHED WITH ONE RUBBER O RING
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
NSN	5305-01-142-6284

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.640 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 1.111 INCHES MINIMUM AND 1.133 INCHES MAXIMUM FIRST SHOULDER IN

•

SHOULDER DIAMETER: 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
FASTENER LENGTH	1.640 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
SHOULDER LENGTH	1.111 INCHES MINIMUM AND 1.133 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER	0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
THREAD DIRECTION	RIGHT-HAND

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 1

ST3M653C4-19ASame 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 HT4020-4-19AX?

HT4020-4-19AX is a SCREW,SHOULDER.

What parts can replace HT4020-4-19AX?

There is 1 known substitute for HT4020-4-19AX: ST3M653C4-19A. Substitute compatibility should be verified for your specific system.

What is the NSN for HT4020-4-19AX?

HT4020-4-19AX is cataloged in the U.S. Government catalog under NSN 5305-01-142-6284. This indicates validated use in U.S. government and defense supply chains.

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