91771A557 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91771A557: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include thread_length: 0.500 INCHES NOMINAL IN, screw_material: STEEL, special_features: 1/4"-28 THREAD;HEAD HEIGHT .153";WIDTH BETWEEN FLATS .477";NUMBER 3 DRIVE, thread_direction: RIGHT-HAND, part_name_assigned_by_controlling_agency: PHILLIPS FLAT HEAD MACHINE SCREW. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-559-4409, 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

91771A557

NSN: 5305-01-559-4409
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

thread_length	0.500 INCHES NOMINAL IN
screw_material	STEEL
special_features	1/4"-28 THREAD;HEAD HEIGHT .153";WIDTH BETWEEN FLATS .477";NUMBER 3 DRIVE
thread_direction	RIGHT-HAND
part_name_assigned_by_controlling_agency	PHILLIPS FLAT HEAD MACHINE SCREW
NSN	5305-01-559-4409

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD LENGTH: 0.500 INCHES NOMINAL IN

•

THREAD DIRECTION: RIGHT-HAND

•

SCREW MATERIAL: STEEL

TECHNICAL CHARACTERISTICS

THREAD LENGTH	0.500 INCHES NOMINAL IN
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	STEEL
SPECIAL FEATURES	1/4"-28 THREAD;HEAD HEIGHT .153";WIDTH BETWEEN FLATS .477";NUMBER 3 DRIVE
PART NAME ASSIGNED BY CONTROLLING AGENCY	PHILLIPS FLAT HEAD MACHINE SCREW

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

No substitute or cross-reference records for this part.

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 91771A557?

91771A557 is a SCREW,MACHINE.

What is the NSN for 91771A557?

91771A557 is cataloged in the U.S. Government catalog under NSN 5305-01-559-4409. This indicates validated use in U.S. government and defense supply chains.

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91771A557 — SCREW,MACHINE

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