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Technical Data Sheet
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227471Y23 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

227471Y23: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, head_style: DEE CHAMFER, head_height: 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_length: 0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-564-4571, 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
227471Y23
NSN: 5306-00-564-4571
FSC: 5306 — Bolts
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
head_styleDEE CHAMFER
head_height0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_length0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.575 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.509 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
NSN5306-00-564-4571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 227471Y23 · 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: 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.575 INCHES NOMINAL FIRST SHOULDER IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.509 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
FASTENER LENGTH1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
SHOULDER LENGTH0.575 INCHES NOMINAL FIRST SHOULDER IN
DISTANCE FROM CENTERLINE TO FLAT0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SHOULDER DIAMETER0.509 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.438 INCHES 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 227471Y23?
227471Y23 is a BOLT,SHOULDER.
What is the NSN for 227471Y23?
227471Y23 is cataloged in the U.S. Government catalog under NSN 5306-00-564-4571. 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.