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L3223681-057 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

L3223681-057: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: DOUBLE HEXAGON, head_height: 0.257 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.482 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-252-5286, 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
L3223681-057
NSN: 5306-01-252-5286
FSC: 5306 — Bolts
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleDOUBLE HEXAGON
head_height0.257 INCHES NOMINAL IN
thread_class3A A
thread_length0.482 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.053 INCHES MINIMUM AND 2.073 INCHES MAXIMUM IN
shoulder_length1.551 INCHES MINIMUM AND 1.571 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN
width_between_flats0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
NSN5306-01-252-5286
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: L3223681-057 · 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: 0.257 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.053 INCHES MINIMUM AND 2.073 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.551 INCHES MINIMUM AND 1.571 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.482 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES NOMINAL FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.257 INCHES NOMINAL IN
FASTENER LENGTH2.053 INCHES MINIMUM AND 2.073 INCHES MAXIMUM IN
SHOULDER LENGTH1.551 INCHES MINIMUM AND 1.571 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.482 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES NOMINAL FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEDOUBLE HEXAGON
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is L3223681-057?
L3223681-057 is a BOLT,SHOULDER.
What is the NSN for L3223681-057?
L3223681-057 is cataloged in the U.S. Government catalog under NSN 5306-01-252-5286. 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.