ASME B18.31.1M — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ASME B18.31.1M: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 12.9 OVERALL, head_style: FLAT CHAMFER, head_height: 9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM, head_diameter: 15.6 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM MM, thread_length: 30.00 MILLIMETERS NOMINAL MM, fastener_length: 30.00 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-438-3710, 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

ASME B18.31.1M

NSN: 5305-01-438-3710
FSC: 5305 — Screws
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)

SPECIFICATIONS

material	STEEL PROPERTY CLASS 12.9 OVERALL
head_style	FLAT CHAMFER
head_height	9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM
head_diameter	15.6 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM MM
thread_length	30.00 MILLIMETERS NOMINAL MM
fastener_length	30.00 MILLIMETERS NOMINAL MM
thread_direction	RIGHT-HAND
surface_treatment	ZINC OVERALL
width_across_flats	8.0 MILLIMETERS NOMINAL MM
internal_drive_style	HEXAGON
nominal_thread_diameter	10.0 MILLIMETERS MM
thread_series_designator	M
NSN	5305-01-438-3710

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 8.0 MILLIMETERS NOMINAL MM

•

HEAD HEIGHT: 9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM

•

EXTERNAL THREAD TOLERANCE CLASS: 4G6G

•

FASTENER LENGTH: 30.00 MILLIMETERS NOMINAL MM

•

THREAD PITCH IN MILLIMETERS: 1.5

•

THREAD LENGTH: 30.00 MILLIMETERS NOMINAL MM

•

NOMINAL THREAD DIAMETER: 10.0 MILLIMETERS MM

•

HEAD STYLE: FLAT CHAMFER

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	8.0 MILLIMETERS NOMINAL MM
HEAD HEIGHT	9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS	4G6G
FASTENER LENGTH	30.00 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS	1.5
THREAD LENGTH	30.00 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER	10.0 MILLIMETERS MM
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
SURFACE TREATMENT	ZINC OVERALL

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 2

B1831BH100030NReference document

Same NSN cross-reference

Reference document — Secondary reference

AES43M10C030CH1A21Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is ASME B18.31.1M?

ASME B18.31.1M is a SCREW,CAP,SOCKET HEAD.

What parts can replace ASME B18.31.1M?

There are 2 known substitutes for ASME B18.31.1M: B1831BH100030N, AES43M10C030CH1A21. Substitute compatibility should be verified for your specific system.

What is the NSN for ASME B18.31.1M?

ASME B18.31.1M is cataloged in the U.S. Government catalog under NSN 5305-01-438-3710. This indicates validated use in U.S. government and defense supply chains.

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ASME B18.31.1M — SCREW,CAP,SOCKET HEAD

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