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1664345 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1664345: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.216 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.850 INCHES MINIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-622-4789, 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
1664345
NSN: 5306-00-622-4789
FSC: 5306 — Bolts
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.216 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
thread_class2A A
thread_length0.850 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.120 INCHES NOMINAL IN
shoulder_length0.270 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.438 INCHES NOMINAL FIRST SHOULDER IN
width_between_flats0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-622-4789
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1664345 · 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: 0.216 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.120 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.270 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.438 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.850 INCHES MINIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.216 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
FASTENER LENGTH1.120 INCHES NOMINAL IN
SHOULDER LENGTH0.270 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.438 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.850 INCHES MINIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
47559Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1664345?
1664345 is a BOLT,SHOULDER.
What parts can replace 1664345?
There is 1 known substitute for 1664345: 47559. Substitute compatibility should be verified for your specific system.
What is the NSN for 1664345?
1664345 is cataloged in the U.S. Government catalog under NSN 5306-00-622-4789. 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.