ST3M557-7-19 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ST3M557-7-19: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.188 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.437 INCHES NOMINAL IN, head_diameter: 0.672 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-514-4085, 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

ST3M557-7-19

NSN: 5305-01-514-4085
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	NICKEL ALLOY 718 OVERALL
head_style	FLAT COUNTERSUNK
grip_length	1.188 INCHES NOMINAL IN
thread_class	3A A
grip_diameter	0.437 INCHES NOMINAL IN
head_diameter	0.672 INCHES NOMINAL IN
thread_length	0.656 INCHES NOMINAL IN
fastener_length	1.844 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE OVERALL
internal_drive_style	HIGH-TORQUE
end_item_identification	WING AIRCRAFT
NSN	5305-01-514-4085

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 1.844 INCHES NOMINAL IN

•

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

•

THREAD LENGTH: 0.656 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.438 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

GRIP LENGTH: 1.188 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	1.844 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.656 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	1.188 INCHES NOMINAL IN
GRIP DIAMETER	0.437 INCHES NOMINAL IN
SURFACE TREATMENT	PASSIVATE OVERALL

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

HT4027-7-19Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

11923-7-19Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

WC4027-7-19Same 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 ST3M557-7-19?

ST3M557-7-19 is a SCREW,CLOSE TOLERANCE.

What parts can replace ST3M557-7-19?

There are 3 known substitutes for ST3M557-7-19: HT4027-7-19, 11923-7-19, WC4027-7-19. Substitute compatibility should be verified for your specific system.

What is the NSN for ST3M557-7-19?

ST3M557-7-19 is cataloged in the U.S. Government catalog under NSN 5305-01-514-4085. This indicates validated use in U.S. government and defense supply chains.

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