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Technical Data Sheet
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166-5347 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

166-5347: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 4.278 INCHES MINIMUM AND 4.398 INCHES MAXIMUM IN, head_height: 0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.480 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-086-2349, 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
166-5347
NSN: 5306-01-086-2349
FSC: 5306 — Bolts
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length4.278 INCHES MINIMUM AND 4.398 INCHES MAXIMUM IN
head_height0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class2A A
thread_length0.480 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
surface_finish60.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length4.878 INCHES MINIMUM AND 4.938 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
NSN5306-01-086-2349
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 166-5347 · 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
•
SURFACE FINISH: 60.0 MICROINCHES BEARING SURFACE OF HEAD
•
EXTENDED WASHER THICKNESS: 0.074 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
FASTENER LENGTH: 4.878 INCHES MINIMUM AND 4.938 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.480 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH60.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.074 INCHES MINIMUM IN
HEAD HEIGHT0.300 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
FASTENER LENGTH4.878 INCHES MINIMUM AND 4.938 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
THREAD LENGTH0.480 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON W/HOLE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 166-5347?
166-5347 is a BOLT,MACHINE.
What is the NSN for 166-5347?
166-5347 is cataloged in the U.S. Government catalog under NSN 5306-01-086-2349. 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.