556-6406598-MACD-A45 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

556-6406598-MACD-A45: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE, head_style: FLAT FILLISTER, head_height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, fastener_length: 2.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-417-0018, 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

556-6406598-MACD-A45

NSN: 5305-01-417-0018
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)

SPECIFICATIONS

material	PLASTIC POLYAMIDE NYLON LOCKING FEATURE
head_style	FLAT FILLISTER
head_height	0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
fastener_length	2.500 INCHES NOMINAL IN
locking_feature	PATCH OR PELLET OR STRIP THREADS
width_across_flats	0.375 INCHES NOMINAL IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.500 INCHES IN
thread_quantity_per_inch	13
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-417-0018

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN

•

HEAD HEIGHT: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN

•

FASTENER LENGTH: 2.500 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.500 INCHES IN

•

HEAD STYLE: FLAT FILLISTER

•

LOCKING FEATURE: PATCH OR PELLET OR STRIP THREADS

•

INTERNAL DRIVE STYLE: HEXAGON

•

THREAD CLASS: 3A A

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.375 INCHES NOMINAL IN
HEAD HEIGHT	0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FASTENER LENGTH	2.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.500 INCHES IN
HEAD STYLE	FLAT FILLISTER
LOCKING FEATURE	PATCH OR PELLET OR STRIP THREADS
INTERNAL DRIVE STYLE	HEXAGON
THREAD CLASS	3A A
THREAD QUANTITY PER INCH	13
MATERIAL	PLASTIC POLYAMIDE NYLON LOCKING FEATURE

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 2

801-6405354 FIND 101Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

211063437Same 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 556-6406598-MACD-A45?

556-6406598-MACD-A45 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 556-6406598-MACD-A45?

There are 2 known substitutes for 556-6406598-MACD-A45: 801-6405354 FIND 101, 211063437. Substitute compatibility should be verified for your specific system.

What is the NSN for 556-6406598-MACD-A45?

556-6406598-MACD-A45 is cataloged in the U.S. Government catalog under NSN 5305-01-417-0018. This indicates validated use in U.S. government and defense supply chains.

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