ST284-2-4 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ST284-2-4: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, thread_length: 0.308 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, screw_material: IRON ALLOY 660. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-259-6332, 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

ST284-2-4

NSN: 5305-01-259-6332
FSC: 5305 — Screws
CAGE: 18355 — THE BOEING COMPANY (USA)

SPECIFICATIONS

head_style	PAN
head_height	0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_length	0.308 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
screw_material	IRON ALLOY 660
fastener_length	0.558 INCHES MINIMUM AND 0.588 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
internal_drive_style	CROSS RECESS TYPE 1
nominal_thread_diameter	0.164 INCHES IN
screw_surface_treatment	PASSIVATE
minimum_tensile_strength	160000 POUNDS PER SQUARE INCH LBS
NSN	5305-01-259-6332

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN

•

SCREW SURFACE TREATMENT: PASSIVATE

•

FASTENER LENGTH: 0.558 INCHES MINIMUM AND 0.588 INCHES MAXIMUM IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5737 ASSN STD 2ND MATERIAL RESPONSE

•

THREAD LENGTH: 0.308 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.164 INCHES IN

•

HEAD STYLE: PAN

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT	PASSIVATE
FASTENER LENGTH	0.558 INCHES MINIMUM AND 0.588 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5737 ASSN STD 2ND MATERIAL RESPONSE
THREAD LENGTH	0.308 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.164 INCHES IN
HEAD STYLE	PAN
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	IRON ALLOY 660
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH LBS

SUBSTITUTES & CROSS-REFERENCES 1

ST284Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 ST284-2-4?

ST284-2-4 is a SCREW,MACHINE.

What parts can replace ST284-2-4?

There is 1 known substitute for ST284-2-4: ST284. Substitute compatibility should be verified for your specific system.

What is the NSN for ST284-2-4?

ST284-2-4 is cataloged in the U.S. Government catalog under NSN 5305-01-259-6332. This indicates validated use in U.S. government and defense supply chains.

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