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8J2928 — BOLT,SQUARE NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

8J2928: BOLT,SQUARE NECK.

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, neck_width: 1.030 INCHES NOMINAL1.030 INCHES NOMINAL IN, head_height: 0.185 INCHES NOMINAL0.185 INCHES NOMINAL IN, neck_length: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN, thread_class: 2A2A, head_diameter: 1.568 INCHES NOMINAL1.568 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-044-5141, 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
8J2928
NSN: 5306-01-044-5141
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
neck_width1.030 INCHES NOMINAL1.030 INCHES NOMINAL IN
head_height0.185 INCHES NOMINAL0.185 INCHES NOMINAL IN
neck_length0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
thread_class2A2A
head_diameter1.568 INCHES NOMINAL1.568 INCHES NOMINAL IN
thread_length1.250 INCHES MINIMUM AND 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM1.375 INCHES MAXIMUM IN
fastener_length3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
thread_directionRIGHT-HANDRIGHT-HAND
nominal_thread_diameter1.000 INCHES1.000 INCHES IN
thread_quantity_per_inch88
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5306-01-044-5141
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8J2928 · 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: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.185 INCHES NOMINAL0.185 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES MINIMUM AND 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM1.375 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 1.000 INCHES1.000 INCHES IN
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NECK WIDTH: 1.030 INCHES NOMINAL1.030 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NECK LENGTH0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
HEAD HEIGHT0.185 INCHES NOMINAL0.185 INCHES NOMINAL IN
FASTENER LENGTH3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MINIMUM AND 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM1.375 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER1.000 INCHES1.000 INCHES IN
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NECK WIDTH1.030 INCHES NOMINAL1.030 INCHES NOMINAL IN
THREAD CLASS2A2A
THREAD QUANTITY PER INCH88
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8J2928?
8J2928 is a BOLT,SQUARE NECK.
What is the NSN for 8J2928?
8J2928 is cataloged in the U.S. Government catalog under NSN 5306-01-044-5141. 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.