B18.3.2.1M — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

B18.3.2.1M: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 10.9 OVERALL, head_style: HEXAGON, head_height: 6.17 MILLIMETERS MINIMUM AND 6.63 MILLIMETERS MAXIMUM MM, thread_length: 26.0 MILLIMETERS MINIMUM AND 33.5 MILLIMETERS MAXIMUM MM, fastener_length: 49.2 MILLIMETERS MINIMUM AND 50.8 MILLIMETERS MAXIMUM MM, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-418-1728, 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

B18.3.2.1M

NSN: 5305-01-418-1728
NIINs: 014181728, 014356289, 014377603, 014977302
FSC: 5305 — Screws
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)

SPECIFICATIONS

material	STEEL PROPERTY CLASS 10.9 OVERALL
head_style	HEXAGON
head_height	6.17 MILLIMETERS MINIMUM AND 6.63 MILLIMETERS MAXIMUM MM
thread_length	26.0 MILLIMETERS MINIMUM AND 33.5 MILLIMETERS MAXIMUM MM
fastener_length	49.2 MILLIMETERS MINIMUM AND 50.8 MILLIMETERS MAXIMUM MM
thread_direction	RIGHT-HAND
surface_treatment	ZINC AND CHROMATE OVERALL
width_between_flats	15.73 MILLIMETERS MINIMUM AND 16.00 MILLIMETERS MAXIMUM MM
end_item_identification	INTERIM ARMORED VEHICLE (IAV), CONTRACTOR LOGISTICS SUPPORT (CLS)
nominal_thread_diameter	10.0 MILLIMETERS MM
thread_series_designator	M
thread_pitch_in_millimeters	1.5
NSN	5305-01-418-1728

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 6.17 MILLIMETERS MINIMUM AND 6.63 MILLIMETERS MAXIMUM MM

•

EXTERNAL THREAD TOLERANCE CLASS: 6G G

•

FASTENER LENGTH: 49.2 MILLIMETERS MINIMUM AND 50.8 MILLIMETERS MAXIMUM MM

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD PITCH IN MILLIMETERS: 1.5

•

THREAD LENGTH: 26.0 MILLIMETERS MINIMUM AND 33.5 MILLIMETERS MAXIMUM MM

•

NOMINAL THREAD DIAMETER: 10.0 MILLIMETERS MM

•

HEAD STYLE: HEXAGON

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	6.17 MILLIMETERS MINIMUM AND 6.63 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS	6G G
FASTENER LENGTH	49.2 MILLIMETERS MINIMUM AND 50.8 MILLIMETERS MAXIMUM MM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-Z-325 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD PITCH IN MILLIMETERS	1.5
THREAD LENGTH	26.0 MILLIMETERS MINIMUM AND 33.5 MILLIMETERS MAXIMUM MM
NOMINAL THREAD DIAMETER	10.0 MILLIMETERS MM
HEAD STYLE	HEXAGON
THREAD DIRECTION	RIGHT-HAND
WIDTH BETWEEN FLATS	15.73 MILLIMETERS MINIMUM AND 16.00 MILLIMETERS MAXIMUM MM

SUBSTITUTES & CROSS-REFERENCES 2

B18231B10050NReference document

Same NSN cross-reference

Reference document — Secondary reference

AES07M050CG9A81Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B18.3.2.1M?

B18.3.2.1M is a SCREW,CAP,HEXAGON HEAD.

What parts can replace B18.3.2.1M?

There are 2 known substitutes for B18.3.2.1M: B18231B10050N, AES07M050CG9A81. Substitute compatibility should be verified for your specific system.

What is the NSN for B18.3.2.1M?

B18.3.2.1M is cataloged in the U.S. Government catalog under NSN 5305-01-418-1728. This indicates validated use in U.S. government and defense supply chains.

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B18.3.2.1M — SCREW,CAP,HEXAGON HEAD

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