PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 418331-20
418331-20 ✓ 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: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, thread_length: 0.825 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN, screw_material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316, fastener_length: 0.875 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-455-2528, 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
418331-20
NSN: 5305-00-455-2528
FSC: 5305
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
thread_length0.825 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.112 INCHES IN
screw_surface_treatmentPASSIVATE
minimum_tensile_strength80000 POUNDS PER SQUARE INCH LBS
NSN5305-00-455-2528
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 418331-20 · 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 DIAMETER: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL CORROSION RESISTING OR STEEL
•
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 2C STYLE
•
FASTENER LENGTH: 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
SCREW MATERIALSTEEL CORROSION RESISTING OR STEEL
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 2C STYLE
FASTENER LENGTH0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
22229ADXInterchangeable
interchangeable cross-reference
interchangeable
10-111P11Interchangeable
interchangeable cross-reference
interchangeable
22229Interchangeable
interchangeable cross-reference
interchangeable
FFS92Interchangeable
Same NIIN cross-reference
interchangeable
MS51959-20BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 418331-20?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 418331-20?
418331-20 is a SCREW,MACHINE.
What parts can replace 418331-20?
There are 5 known substitutes for 418331-20: 22229ADX, 10-111P11, 22229 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 418331-20?
418331-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-455-2528. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 418331-20

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026