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Technical Data Sheet
PartsTable / COMPONENT / NAS222-31
NAS222-31 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.464 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN, thread_length: 0.430 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN, screw_material: STEEL COMP 8630. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-282-3230, 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
NAS222-31
NSN: 5305-00-282-3230
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleROUND
head_height0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.464 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN
thread_length0.430 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
screw_materialSTEEL COMP 8630
fastener_length1.954 INCHES MINIMUM AND 2.001 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
screw_surface_treatmentCADMIUM
NSN5305-00-282-3230
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS222-31 · 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
•
THREAD SERIES DESIGNATOR: UNF
•
HEAD DIAMETER: 0.464 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.954 INCHES MINIMUM AND 2.001 INCHES MAXIMUM IN
•
HEAD STYLE: ROUND
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
THREAD CLASS: 3A A
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF
HEAD DIAMETER0.464 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN
FASTENER LENGTH1.954 INCHES MINIMUM AND 2.001 INCHES MAXIMUM IN
HEAD STYLEROUND
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.250 INCHES IN
THREAD LENGTH0.430 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
22-231Interchangeable
interchangeable cross-reference
interchangeable
7100039159Interchangeable
interchangeable cross-reference
interchangeable
TL22-50Interchangeable
interchangeable cross-reference
interchangeable
SYB0679Interchangeable
interchangeable cross-reference
interchangeable
871231Interchangeable
interchangeable cross-reference
interchangeable
256348PC31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS222-31?
NAS222-31 is a SCREW,MACHINE.
What parts can replace NAS222-31?
There are 12 known substitutes for NAS222-31: 22-231, 7100039159, TL22-50 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS222-31?
NAS222-31 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-282-3230. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026