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591950 — BOLT,ECCENTRIC HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

591950: BOLT,ECCENTRIC HEAD.

The BOLT,ECCENTRIC HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OR STEEL COMP 1212 OVERALL, head_style: DEE, head_height: 0.184 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 1.014 INCHES NOMINAL IN, fastener_length: 1.207 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-039-4405, 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
591950
NSN: 5306-01-039-4405
FSC: 5306 — Bolts
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1212 OVERALL
head_styleDEE
head_height0.184 INCHES NOMINAL IN
thread_class2A A
head_diameter1.014 INCHES NOMINAL IN
fastener_length1.207 INCHES NOMINAL IN
special_featuresSHOULDER UNDER HEAD 0.820 DIA BY 0.238 IN. LG IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNF
NSN5306-01-039-4405
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 591950 · 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: 0.184 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.207 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.474 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: DEE
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.184 INCHES NOMINAL IN
FASTENER LENGTH1.207 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO FLAT0.474 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEDEE
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESSHOULDER UNDER HEAD 0.820 DIA BY 0.238 IN. LG IN
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD QUANTITY PER INCH20
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 591950?
591950 is a BOLT,ECCENTRIC HEAD.
What is the NSN for 591950?
591950 is cataloged in the U.S. Government catalog under NSN 5306-01-039-4405. 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.