4457290-20 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

4457290-20: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.443 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN, thread_length: 0.625 INCHES NOMINAL IN, screw_material: NICKEL ALLOY 400. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-476-9803, 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

4457290-20

NSN: 5305-01-476-9803
FSC: 5305 — Screws
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)

SPECIFICATIONS

head_style	ROUND
head_height	0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
thread_class	2A A
head_diameter	0.443 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
thread_length	0.625 INCHES NOMINAL IN
screw_material	NICKEL ALLOY 400
fastener_length	0.625 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
internal_drive_style	SLOT
nominal_thread_diameter	0.250 INCHES IN
thread_quantity_per_inch	20
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-476-9803

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.625 INCHES MAXIMUM IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CLASSA FED SPEC 1ST MATERIAL RESPONSE

•

THREAD LENGTH: 0.625 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: ROUND

•

THREAD DIRECTION: RIGHT-HAND

•

NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1S STYLE

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
FASTENER LENGTH	0.625 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-281,CLASSA FED SPEC 1ST MATERIAL RESPONSE
THREAD LENGTH	0.625 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	ROUND
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 1S STYLE
SCREW MATERIAL	NICKEL ALLOY 400
INTERNAL DRIVE STYLE	SLOT

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 2

FF-S-92Reference document

Same NSN cross-reference

Reference document — Identification reference

0.250-20UNC-2AX0.625IN.MONELReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 4457290-20?

4457290-20 is a SCREW,MACHINE.

What parts can replace 4457290-20?

There are 2 known substitutes for 4457290-20: FF-S-92, 0.250-20UNC-2AX0.625IN.MONEL. Substitute compatibility should be verified for your specific system.

What is the NSN for 4457290-20?

4457290-20 is cataloged in the U.S. Government catalog under NSN 5305-01-476-9803. This indicates validated use in U.S. government and defense supply chains.

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