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90185A583 — BOLT,SQUARE NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90185A583: BOLT,SQUARE NECK.

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, neck_width: 0.324 INCHES NOMINAL IN, head_height: 0.176 INCHES NOMINAL IN, neck_length: 0.187 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-552-8677, 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
90185A583
NSN: 5306-01-552-8677
FSC: 5306 — Bolts
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBUTTON
neck_width0.324 INCHES NOMINAL IN
head_height0.176 INCHES NOMINAL IN
neck_length0.187 INCHES NOMINAL IN
thread_class2A A
head_diameter0.719 INCHES NOMINAL IN
thread_length1.000 INCHES NOMINAL IN
special_featuresTHREAD NOMINAL DIA. IS 5/16 IN. IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
end_item_identification2330-01-452-1218
NSN5306-01-552-8677
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90185A583 · 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
•
NECK LENGTH: 0.187 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.176 INCHES NOMINAL IN
•
THREAD LENGTH: 1.000 INCHES NOMINAL IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
•
NECK WIDTH: 0.324 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
NECK LENGTH0.187 INCHES NOMINAL IN
HEAD HEIGHT0.176 INCHES NOMINAL IN
THREAD LENGTH1.000 INCHES NOMINAL IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
NECK WIDTH0.324 INCHES NOMINAL IN
SPECIAL FEATURESTHREAD NOMINAL DIA. IS 5/16 IN. IN
SURFACE TREATMENTZINC OVERALL
THREAD CLASS2A A
END ITEM IDENTIFICATION2330-01-452-1218
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90185A583?
90185A583 is a BOLT,SQUARE NECK.
What is the NSN for 90185A583?
90185A583 is cataloged in the U.S. Government catalog under NSN 5306-01-552-8677. 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.