BK-56 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

BK-56: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL UNS K03104 OVERALL, head_style: FLAT CHAMFER, thread_class: 3A A, special_features: FOUR PER SET, thread_direction: RIGHT-HAND, surface_treatment: OXIDE OR PHOSPHATE OR CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-495-4543, 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

BK-56

NSN: 5305-01-495-4543
FSC: 5305 — Screws
CAGE: 09990 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC VALVE DIVISION (USA)

SPECIFICATIONS

material	STEEL UNS K03104 OVERALL
head_style	FLAT CHAMFER
thread_class	3A A
special_features	FOUR PER SET
thread_direction	RIGHT-HAND
surface_treatment	OXIDE OR PHOSPHATE OR CADMIUM OVERALL
internal_drive_style	HEXAGON
end_item_identification	2350-01-368-9500
nominal_thread_diameter	0.190 INCHES IN
thread_quantity_per_inch	24
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
material_document_and_classification	ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	5305-01-495-4543

COMPONENT DIAGRAM

KEY FEATURES

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT CHAMFER

•

THREAD DIRECTION: RIGHT-HAND

•

SURFACE TREATMENT: OXIDE OR PHOSPHATE OR CADMIUM OVERALL

•

INTERNAL DRIVE STYLE: HEXAGON

•

THREAD CLASS: 3A A

TECHNICAL CHARACTERISTICS

MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	FOUR PER SET
SURFACE TREATMENT	OXIDE OR PHOSPHATE OR CADMIUM OVERALL
INTERNAL DRIVE STYLE	HEXAGON
THREAD CLASS	3A A
END ITEM IDENTIFICATION	2350-01-368-9500
THREAD QUANTITY PER INCH	24

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 1

12351869-2Reference document

Same NSN cross-reference

Reference document — Vendor item drawing 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 BK-56?

BK-56 is a SCREW,CAP,SOCKET HEAD.

What parts can replace BK-56?

There is 1 known substitute for BK-56: 12351869-2. Substitute compatibility should be verified for your specific system.

What is the NSN for BK-56?

BK-56 is cataloged in the U.S. Government catalog under NSN 5305-01-495-4543. This indicates validated use in U.S. government and defense supply chains.

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