HT4049-7D49Y — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4049-7D49Y: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN, thread_length: 0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-142-7204, 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

HT4049-7D49Y

NSN: 5305-01-142-7204
FSC: 5305 — Screws
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)

SPECIFICATIONS

material	STEEL COMP XM-13 OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
thread_length	0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	3.501 INCHES MINIMUM AND 3.531 INCHES MAXIMUM IN
shoulder_length	1.056 INCHES MINIMUM AND 1.106 INCHES MAXIMUM FIRST SHOULDER IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter	0.4677 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatment	PASSIVATE OVERALL
NSN	5305-01-142-7204

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 3.501 INCHES MINIMUM AND 3.531 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 1.056 INCHES MINIMUM AND 1.106 INCHES MAXIMUM FIRST SHOULDER IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

SHOULDER DIAMETER: 0.4677 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN

•

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

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	3.501 INCHES MINIMUM AND 3.531 INCHES MAXIMUM IN
SHOULDER LENGTH	1.056 INCHES MINIMUM AND 1.106 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER	0.4677 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK

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 2

3M959-7D49Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

11901-7D49Same 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 HT4049-7D49Y?

HT4049-7D49Y is a SCREW,SHOULDER.

What parts can replace HT4049-7D49Y?

There are 2 known substitutes for HT4049-7D49Y: 3M959-7D49, 11901-7D49. Substitute compatibility should be verified for your specific system.

What is the NSN for HT4049-7D49Y?

HT4049-7D49Y is cataloged in the U.S. Government catalog under NSN 5305-01-142-7204. This indicates validated use in U.S. government and defense supply chains.

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