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B6812 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B6812: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_type: DRILLED, head_style: HEXAGON, grip_length: 2.438 INCHES NOMINAL IN, head_height: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, head_length: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-051-2338, 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
B6812
NSN: 5306-00-051-2338
NIINs: 000512338, 000512343, 000512344, 000512349, 001414507, 001414519, 001414712, 001414716, 001443686, 001443692, 001443700, 001443711, 001443874, 001443943, 001443968, 001443969, 001443971, 001443983, 001444006, 001444015, 001444041, 001444042, 001444045, 001444046, 001444049, 001444050, 001444051, 001444056, 001444057, 001444059, 001456784, 001456789, 001456887, 001456910, 001456962, 001456963, 001456965, 001456989, 001457026, 001457029, 001457030, 001457031, 001457032, 001457034, 001457095, 001457100, 001457103, 001457110, 001457114, 001457659, 001457667, 001457700, 001457702, 001457704, 001457706, 001457709, 001457711, 001457712, 001457720, 001509081, 001509083, 001509086, 001509087, 001509088, 001509095, 001509098, 001509099, 001509107, 001509109, 001509112, 001509248, 001509250, 001509253, 001509283, 001509287, 001509446, 001509487, 001509525, 001509529, 001509531, 001509534, 001509535, 001509539, 001509540, 001509541, 001509542, 001509543, 001509601, 001509604, 001509605, 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FSC: 5306 — Bolts
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length2.438 INCHES NOMINAL IN
head_height0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
head_length0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
shank_length0.640 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
head_diameter1.000 INCHES NOMINAL IN
hole_diameter0.070 INCHES NOMINAL IN
hole_quantity6
NSN5306-00-051-2338
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B6812 · 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
•
HEAD HEIGHT: 0.266 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.672 INCHES NOMINAL IN
•
THREAD LENGTH: 0.547 INCHES MINIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
HOLE CONFIGURATION STYLE: HEXAGON LONGITUDINAL HOLE
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.266 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
FASTENER LENGTH2.672 INCHES NOMINAL IN
THREAD LENGTH0.547 INCHES MINIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HOLE CONFIGURATION STYLEHEXAGON LONGITUDINAL HOLE
NOMINAL THREAD DIAMETER0.312 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH2.125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
AN75A25Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS20074-05-25Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B6812?
B6812 is a BOLT,MACHINE.
What parts can replace B6812?
There are 2 known substitutes for B6812: AN75A25, MS20074-05-25. Substitute compatibility should be verified for your specific system.
What is the NSN for B6812?
B6812 is cataloged in the U.S. Government catalog under NSN 5306-00-051-2338. This indicates validated use in U.S. government and defense supply chains.
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