6406598-MACD-A42 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

6406598-MACD-A42: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT FILLISTER, head_height: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN, fastener_length: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-417-1068, 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

6406598-MACD-A42

NSN: 5305-01-417-1068
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
head_style	FLAT FILLISTER
head_height	0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
fastener_length	2.000 INCHES NOMINAL IN
locking_feature	PATCH OR PELLET OR STRIP THREADS
width_across_flats	0.250 INCHES NOMINAL IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.625 INCHES IN
thread_quantity_per_inch	11
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-417-1068

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN

•

HEAD HEIGHT: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN

•

FASTENER LENGTH: 2.000 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.625 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	0.250 INCHES NOMINAL IN
HEAD HEIGHT	0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
FASTENER LENGTH	2.000 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.625 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	11
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 3

556-6406598-MACD-A42Reference document

Same NSN cross-reference

Reference document — Secondary reference

218003075Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

556-6406595-MDBC-A40Reference document

Same NSN cross-reference

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

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 6406598-MACD-A42?

6406598-MACD-A42 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 6406598-MACD-A42?

There are 3 known substitutes for 6406598-MACD-A42: 556-6406598-MACD-A42, 218003075, 556-6406595-MDBC-A40. Substitute compatibility should be verified for your specific system.

What is the NSN for 6406598-MACD-A42?

6406598-MACD-A42 is cataloged in the U.S. Government catalog under NSN 5305-01-417-1068. This indicates validated use in U.S. government and defense supply chains.

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6406598-MACD-A42 — SCREW,CAP,SOCKET HEAD

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