B18.2.3.4M — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

B18.2.3.4M: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON EXTENDED WASHER, head_height: 9.7 MILLIMETERS MAXIMUM MM, thread_length: 40.00 MILLIMETERS NOMINAL MM, screw_material: STEEL PROPERTY CLASS 12.9, fastener_length: 50.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-494-5649, 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

B18.2.3.4M

NSN: 5305-01-494-5649
NIINs: 014945649, 015038728, 016432941
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)

SPECIFICATIONS

head_style	HEXAGON EXTENDED WASHER
head_height	9.7 MILLIMETERS MAXIMUM MM
thread_length	40.00 MILLIMETERS NOMINAL MM
screw_material	STEEL PROPERTY CLASS 12.9
fastener_length	50.0 MILLIMETERS NOMINAL MM
thread_direction	RIGHT-HAND
surface_treatment	ZINC AND CHROMATE OVERALL
width_between_flats	12.6 MILLIMETERS MINIMUM AND 13.0 MILLIMETERS MAXIMUM MM
internal_drive_style	W/O INTERNAL DRIVE
special_test_features	FEATURES: HEADER POINT,TYPE F FILLET
supplementary_features	ELECTRODEPOSITED COATINGS ON THREADED FASTENERS;ASTM F 1941M,ZINC NICKEL ALLOY (FE/NZ-NI) TYPE 5F
end_item_identification	INTERIM ARMORED VEHICLE (IAV), CONTRACTOR LOGISTICS SUPPORT (CLS)
NSN	5305-01-494-5649

COMPONENT DIAGRAM

KEY FEATURES

•

EXTENDED WASHER THICKNESS: 1.1 MILLIMETERS MINIMUM MM

•

HEAD HEIGHT: 6.8 MILLIMETERS MAXIMUM MM

•

EXTERNAL THREAD TOLERANCE CLASS: 6G G

•

FASTENER LENGTH: 89.4 MILLIMETERS MINIMUM AND 90.6 MILLIMETERS MAXIMUM MM

•

EXTENDED WASHER DIAMETER: 13.6 MILLIMETERS MAXIMUM MM

•

THREAD PITCH IN MILLIMETERS: 1.0

•

THREAD LENGTH: 18.0 MILLIMETERS NOMINAL MM

•

NOMINAL THREAD DIAMETER: 6.0 MILLIMETERS MM

TECHNICAL CHARACTERISTICS

EXTENDED WASHER THICKNESS	1.1 MILLIMETERS MINIMUM MM
HEAD HEIGHT	6.8 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS	6G G
FASTENER LENGTH	89.4 MILLIMETERS MINIMUM AND 90.6 MILLIMETERS MAXIMUM MM
EXTENDED WASHER DIAMETER	13.6 MILLIMETERS MAXIMUM MM
THREAD PITCH IN MILLIMETERS	1.0
THREAD LENGTH	18.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER	6.0 MILLIMETERS MM
HEAD STYLE	HEXAGON EXTENDED WASHER
THREAD DIRECTION	RIGHT-HAND

SUBSTITUTES & CROSS-REFERENCES 1

B18234B06090NReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B18.2.3.4M?

B18.2.3.4M is a SCREW,CAP,HEXAGON HEAD.

What parts can replace B18.2.3.4M?

There is 1 known substitute for B18.2.3.4M: B18234B06090N. Substitute compatibility should be verified for your specific system.

What is the NSN for B18.2.3.4M?

B18.2.3.4M is cataloged in the U.S. Government catalog under NSN 5305-01-494-5649. This indicates validated use in U.S. government and defense supply chains.

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B18.2.3.4M — SCREW,CAP,HEXAGON HEAD

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