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A61040 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A61040: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.380 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.970 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-084-9143, 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
A61040
NSN: 5306-01-084-9143
FSC: 5306 — Bolts
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.380 INCHES NOMINAL IN
thread_class2A A
thread_length0.970 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length3.000 INCHES NOMINAL IN
shoulder_length1.844 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM FIRST SHOULDER IN
width_between_flats0.750 INCHES NOMINAL IN
nominal_thread_diameter0.500 INCHES IN
NSN5306-01-084-9143
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A61040 · 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: 0.380 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.000 INCHES NOMINAL IN
•
SHOULDER LENGTH: 1.844 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.970 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.380 INCHES NOMINAL IN
FASTENER LENGTH3.000 INCHES NOMINAL IN
SHOULDER LENGTH1.844 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.970 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
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 A61040?
A61040 is a BOLT,SHOULDER.
What is the NSN for A61040?
A61040 is cataloged in the U.S. Government catalog under NSN 5306-01-084-9143. 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.