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MB87-12H28 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MB87-12H28: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, hole_type: DRILLED, head_style: DOUBLE HEXAGON W/HOLE, head_height: 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN, thread_class: 3A A, hole_diameter: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-209-9298, 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
MB87-12H28
NSN: 5306-01-209-9298
FSC: 5306 — Bolts
CAGE: 73197 — HI-SHEAR CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
hole_typeDRILLED
head_styleDOUBLE HEXAGON W/HOLE
head_height0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
hole_quantity4
thread_length1.027 INCHES MINIMUM AND 1.077 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.787 INCHES MINIMUM AND 2.817 INCHES MAXIMUM IN
shoulder_length1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
NSN5306-01-209-9298
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MB87-12H28 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXTENDED WASHER THICKNESS: 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.787 INCHES MINIMUM AND 2.817 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.7797 INCHES MINIMUM AND 0.7802 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 1.027 INCHES MINIMUM AND 1.077 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
HEAD HEIGHT0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN
FASTENER LENGTH2.787 INCHES MINIMUM AND 2.817 INCHES MAXIMUM IN
SHOULDER LENGTH1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
SHOULDER DIAMETER0.7797 INCHES MINIMUM AND 0.7802 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH1.027 INCHES MINIMUM AND 1.077 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HOLE CONFIGURATION STYLEDOUBLE HEXAGON LONGITUDINAL HOLE
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 6
BM3326-12H28YReference document
Same NSN cross-reference
Reference document — Secondary reference
74328-12H28YSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S11-1063-12H28Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VAL23033-12H28XSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M607-12H28Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VS3061-12H28Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MB87-12H28?
MB87-12H28 is a BOLT,SHOULDER.
What parts can replace MB87-12H28?
There are 6 known substitutes for MB87-12H28: BM3326-12H28Y, 74328-12H28Y, S11-1063-12H28 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MB87-12H28?
MB87-12H28 is cataloged in the U.S. Government catalog under NSN 5306-01-209-9298. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.