ST3M557-4-24 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ST3M557-4-24: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: FILLISTER COUNTERSUNK, grip_length: 1.5 INCHES NOMINAL IN, head_height: 0.015 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.25 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-588-1747, 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

ST3M557-4-24

NSN: 5305-01-588-1747
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	NICKEL ALLOY 718 OVERALL
head_style	FILLISTER COUNTERSUNK
grip_length	1.5 INCHES NOMINAL IN
head_height	0.015 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.25 INCHES NOMINAL IN
head_diameter	0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM IN
thread_length	0.469 INCHES NOMINAL IN
fastener_length	1.969 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatment	PASSIVATE OVERALL
NSN	5305-01-588-1747

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.015 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.969 INCHES NOMINAL IN

•

THREAD LENGTH: 0.469 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.2500 INCHES IN

•

HEAD STYLE: FILLISTER COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

GRIP LENGTH: 1.5 INCHES NOMINAL IN

•

GRIP DIAMETER: 0.25 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.015 INCHES MAXIMUM IN
FASTENER LENGTH	1.969 INCHES NOMINAL IN
THREAD LENGTH	0.469 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.2500 INCHES IN
HEAD STYLE	FILLISTER COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	1.5 INCHES NOMINAL IN
GRIP DIAMETER	0.25 INCHES NOMINAL IN
SURFACE TREATMENT	PASSIVATE OVERALL
INTERNAL DRIVE STYLE	HIGH-TORQUE

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

HT4027-4-24Same 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 ST3M557-4-24?

ST3M557-4-24 is a SCREW,CLOSE TOLERANCE.

What parts can replace ST3M557-4-24?

There is 1 known substitute for ST3M557-4-24: HT4027-4-24. Substitute compatibility should be verified for your specific system.

What is the NSN for ST3M557-4-24?

ST3M557-4-24 is cataloged in the U.S. Government catalog under NSN 5305-01-588-1747. This indicates validated use in U.S. government and defense supply chains.

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