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93604A812 — BOLT,SQUARE NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

93604A812: BOLT,SQUARE NECK.

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include head_style: ROUND, neck_width: 0.768 INCHES NOMINAL IN, head_height: 0.406 INCHES NOMINAL IN, neck_length: 0.406 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 1.594 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-571-3109, 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
93604A812
NSN: 5306-01-571-3109
FSC: 5306 — Bolts
CAGE: 0KVE6 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleROUND
neck_width0.768 INCHES NOMINAL IN
head_height0.406 INCHES NOMINAL IN
neck_length0.406 INCHES NOMINAL IN
thread_class2A A
head_diameter1.594 INCHES NOMINAL IN
special_featuresITEM IS HOT DIPPED GALVANIZED
thread_directionRIGHT-HAND
end_item_identificationINLS RRDF AND/OR FC KIT
nominal_thread_diameter0.750 INCHES IN
thread_quantity_per_inch10
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5306-01-571-3109
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 93604A812 · 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: 0.406 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.406 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
NECK WIDTH: 0.768 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NECK LENGTH0.406 INCHES NOMINAL IN
HEAD HEIGHT0.406 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
NECK WIDTH0.768 INCHES NOMINAL IN
SPECIAL FEATURESITEM IS HOT DIPPED GALVANIZED
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT CARRIAGE
THREAD CLASS2A A
END ITEM IDENTIFICATIONINLS RRDF AND/OR FC KIT
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 93604A812?
93604A812 is a BOLT,SQUARE NECK.
What is the NSN for 93604A812?
93604A812 is cataloged in the U.S. Government catalog under NSN 5306-01-571-3109. 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.