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PartsTable / COMPONENT / 40221ADX
40221ADX ✓ 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: FILLISTER, head_height: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN, thread_length: 0.750 INCHES MINIMUM IN, screw_material: STEEL COMP 1117. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-840-6211, 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
40221ADX
NSN: 5305-00-840-6211
FSC: 5305
CAGE: 1VN02 — AIRDALE EXPRESS LLC DIV AIRDALE EXPRESS (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
thread_length0.750 INCHES MINIMUM IN
screw_materialSTEEL COMP 1117
fastener_length2.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
thread_quantity_per_inch20
NSN5305-00-840-6211
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 40221ADX · 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 QUANTITY PER INCH: 20
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
HEAD DIAMETER: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.750 INCHES MINIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL COMP 1117
•
HEAD HEIGHT: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH20
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD DIAMETER0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
THREAD LENGTH0.750 INCHES MINIMUM IN
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 1117
HEAD HEIGHT0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
FASTENER LENGTH2.000 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD STYLEFILLISTER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
717-001168Interchangeable
interchangeable cross-reference
interchangeable
702Interchangeable
interchangeable cross-reference
interchangeable
C45072Interchangeable
interchangeable cross-reference
interchangeable
TH3221Interchangeable
interchangeable cross-reference
interchangeable
40221Interchangeable
interchangeable cross-reference
interchangeable
143G186-10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40221ADX?
40221ADX is a SCREW,MACHINE.
What parts can replace 40221ADX?
There are 17 known substitutes for 40221ADX: 717-001168, 702, C45072 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40221ADX?
40221ADX is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-840-6211. 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