MB178-10 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MB178-10: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FILLISTER, head_height: 0.340 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.7995 INCHES MINIMUM AND 0.8000 INCHES MAXIMUM IN, thread_length: 0.628 INCHES MINIMUM AND 0.678 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-236-9157, 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

MB178-10

NSN: 5305-01-236-9157
FSC: 5305 — Screws
CAGE: 73197 — HI-SHEAR CORPORATION (USA)

SPECIFICATIONS

material	STEEL COMP XM-13 OVERALL
head_style	FILLISTER
head_height	0.340 INCHES NOMINAL IN
thread_class	3A A
head_diameter	0.7995 INCHES MINIMUM AND 0.8000 INCHES MAXIMUM IN
thread_length	0.628 INCHES MINIMUM AND 0.678 INCHES MAXIMUM IN
fastener_length	2.178 INCHES MINIMUM AND 2.208 INCHES MAXIMUM IN
special_features	TWO HOLES DRILLED IN THREADED PORTION 90 DEGREES APART; CENTER OF HOLES 0.179 MIN AND 0.189 MAX FROM END OF SCREW
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE OVERALL
width_across_flats	0.3130 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
internal_drive_style	HEXAGON
NSN	5305-01-236-9157

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.3130 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN

•

HEAD HEIGHT: 0.340 INCHES NOMINAL IN

•

FASTENER LENGTH: 2.178 INCHES MINIMUM AND 2.208 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.628 INCHES MINIMUM AND 0.678 INCHES MAXIMUM IN

•

SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM ALL HOLES IN

•

NOMINAL THREAD DIAMETER: 0.625 INCHES IN

•

HEAD STYLE: FILLISTER

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.3130 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
HEAD HEIGHT	0.340 INCHES NOMINAL IN
FASTENER LENGTH	2.178 INCHES MINIMUM AND 2.208 INCHES MAXIMUM IN
THREAD LENGTH	0.628 INCHES MINIMUM AND 0.678 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM ALL HOLES IN
NOMINAL THREAD DIAMETER	0.625 INCHES IN
HEAD STYLE	FILLISTER
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	TWO HOLES DRILLED IN THREADED PORTION 90 DEGREES APART; CENTER OF HOLES 0.179 MIN AND 0.189 MAX FROM END OF SCREW
SURFACE TREATMENT	PASSIVATE OVERALL

SUBSTITUTES & CROSS-REFERENCES 3

81743Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

VS3292-1Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

10113568Reference document

Same NSN cross-reference

Reference document — Informative reference only

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 MB178-10?

MB178-10 is a SCREW,CAP,SOCKET HEAD.

What parts can replace MB178-10?

There are 3 known substitutes for MB178-10: 81743, VS3292-1, 10113568. Substitute compatibility should be verified for your specific system.

What is the NSN for MB178-10?

MB178-10 is cataloged in the U.S. Government catalog under NSN 5305-01-236-9157. This indicates validated use in U.S. government and defense supply chains.

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