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PartsTable / COMPONENT / B6812A
B6812A ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include hole_type: DRILLED, head_style: HEXAGON, grip_length: 0.312 INCHES NOMINAL IN, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-144-3637, 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
B6812A
NSN: 5306-00-144-3637
FSC: 5306
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length0.312 INCHES NOMINAL IN
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN
hole_diameter0.070 INCHES NOMINAL IN
hole_quantity1
thread_length1.375 INCHES MINIMUM IN
surface_finish63.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length0.953 INCHES NOMINAL IN
NSN5306-00-144-3637
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B6812A · 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
•
FASTENER LENGTH: 1.469 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 20
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM AND DICHROMATE OVERALL
•
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 1.297 INCHES NOMINAL FIRST HOLE IN
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
GRIP LENGTH: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.469 INCHES NOMINAL IN
THREAD QUANTITY PER INCH20
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND DICHROMATE OVERALL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.297 INCHES NOMINAL FIRST HOLE IN
SPECIAL FEATURESONE DRILLED HOLE IN HEAD
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
GRIP LENGTH0.688 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES NOMINAL FIRST HOLE IN
FEATURES PROVIDEDFINISHED HEAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
88T13Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B6812A?
B6812A is a BOLT,CLOSE TOLERANCE.
What parts can replace B6812A?
There is 1 known substitute for B6812A: 88T13. Substitute compatibility should be verified for your specific system.
What is the NSN for B6812A?
B6812A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-144-3637. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026