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Technical Data Sheet
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311347R1 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

311347R1: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: CROWNED HEXAGON, grip_length: 1.280 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN, head_height: 0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.160 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-682-5540, 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
311347R1
NSN: 5306-00-682-5540
FSC: 5306 — Bolts
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleCROWNED HEXAGON
grip_length1.280 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
head_height0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
thread_class2A A
thread_length1.160 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
fastener_length2.580 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM GRIP
special_featuresHARDEN TOP OF HEAD TO ROCKWELL C50 TO0.120 IN.DEEP IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats1.000 INCHES NOMINAL IN
NSN5306-00-682-5540
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 311347R1 · 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: 0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.580 INCHES NOMINAL IN
•
THREAD LENGTH: 1.160 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM GRIP
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: CROWNED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
FASTENER LENGTH2.580 INCHES NOMINAL IN
THREAD LENGTH1.160 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM GRIP
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLECROWNED HEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.280 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS1.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311347R1?
311347R1 is a BOLT,MACHINE.
What is the NSN for 311347R1?
311347R1 is cataloged in the U.S. Government catalog under NSN 5306-00-682-5540. This indicates validated use in U.S. government and defense supply chains.
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