MB13-7-D26 — BOLT,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MB13-7-D26: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON, grip_length: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN, head_height: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-013-5726, 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

MB13-7-D26

NSN: 5306-01-013-5726
FSC: 5306 — Bolts
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)

SPECIFICATIONS

material	STEEL OVERALL
head_style	DOUBLE HEXAGON
grip_length	1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
head_height	0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
thread_length	0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
fastener_length	2.075 INCHES MINIMUM AND 2.122 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
width_between_flats	0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN
nominal_thread_diameter	0.438 INCHES IN
NSN	5306-01-013-5726

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN

•

FASTENER LENGTH: 2.075 INCHES MINIMUM AND 2.122 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MAC PS13145,MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN

•

SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: 23-105,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.438 INCHES IN

•

HEAD STYLE: DOUBLE HEXAGON

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
FASTENER LENGTH	2.075 INCHES MINIMUM AND 2.122 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MAC PS13145,MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATION	23-105,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES IN
HEAD STYLE	DOUBLE HEXAGON
THREAD DIRECTION	RIGHT-HAND
SPECIFICATION/STANDARD DATA	08524-B-17028 MANUFACTURERS STANDARD

SUBSTITUTES & CROSS-REFERENCES 2

ST3M561-7-D26Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

BM17028-7-26Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MB13-7-D26?

MB13-7-D26 is a BOLT,CLOSE TOLERANCE.

What parts can replace MB13-7-D26?

There are 2 known substitutes for MB13-7-D26: ST3M561-7-D26, BM17028-7-26. Substitute compatibility should be verified for your specific system.

What is the NSN for MB13-7-D26?

MB13-7-D26 is cataloged in the U.S. Government catalog under NSN 5306-01-013-5726. This indicates validated use in U.S. government and defense supply chains.

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