MB155-3D7 — BOLT,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MB155-3D7: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: SPLINE DRIVE SHEAR HEAD, grip_length: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, head_height: 0.140 INCHES MINIMUM IN, thread_class: 3A A, grip_diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-254-7269, 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

MB155-3D7

NSN: 5306-01-254-7269
FSC: 5306 — Bolts
CAGE: 73197 — HI-SHEAR CORPORATION (USA)

SPECIFICATIONS

material	STEEL COMP XM-13 OVERALL
head_style	SPLINE DRIVE SHEAR HEAD
grip_length	0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
head_height	0.140 INCHES MINIMUM IN
thread_class	3A A
grip_diameter	0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
thread_length	0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
fastener_length	0.753 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
features_provided	FINISHED HEAD
surface_treatment	PASSIVATE OVERALL
head_minor_diameter	0.383 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
NSN	5306-01-254-7269

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.140 INCHES MINIMUM IN

•

FASTENER LENGTH: 0.753 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

FEATURES PROVIDED: FINISHED HEAD

•

HEAD STYLE: SPLINE DRIVE SHEAR HEAD

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.140 INCHES MINIMUM IN
FASTENER LENGTH	0.753 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
FEATURES PROVIDED	FINISHED HEAD
HEAD STYLE	SPLINE DRIVE SHEAR HEAD
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN

OTHER ITEMS IN FSC 5306 — Bolts

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017

SUBSTITUTES & CROSS-REFERENCES 2

GS1031-3D7Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ST3M747-3D7Reference document

Same NSN cross-reference

Reference document — Secondary 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 MB155-3D7?

MB155-3D7 is a BOLT,CLOSE TOLERANCE.

What parts can replace MB155-3D7?

There are 2 known substitutes for MB155-3D7: GS1031-3D7, ST3M747-3D7. Substitute compatibility should be verified for your specific system.

What is the NSN for MB155-3D7?

MB155-3D7 is cataloged in the U.S. Government catalog under NSN 5306-01-254-7269. This indicates validated use in U.S. government and defense supply chains.

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