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90434A122 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90434A122: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, head_height: 0.083 INCHES NOMINAL IN, head_diameter: 0.262 INCHES NOMINAL IN, special_features: OVERALL LENGTH: 0.50IN IN, thread_direction: RIGHT-HAND, countersink_angle: 81.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-654-0621, 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
90434A122
NSN: 5305-01-654-0621
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
head_height0.083 INCHES NOMINAL IN
head_diameter0.262 INCHES NOMINAL IN
special_featuresOVERALL LENGTH: 0.50IN IN
thread_directionRIGHT-HAND
countersink_angle81.0 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE 1
end_item_identificationMRAP - M-ATV UI
part_name_assigned_by_controlling_agencySCREW,FLT,XR,TF NO.6-19X.50 NS PO NS
NSN5305-01-654-0621
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90434A122 · 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: 0.083 INCHES NOMINAL IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
COUNTERSINK ANGLE: 81.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.083 INCHES NOMINAL IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESOVERALL LENGTH: 0.50IN IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE81.0 DEGREES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW,FLT,XR,TF NO.6-19X.50 NS PO NS
END ITEM IDENTIFICATIONMRAP - M-ATV UI
HEAD DIAMETER0.262 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
4199731Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 90434A122?
90434A122 is a SCREW,MACHINE.
What parts can replace 90434A122?
There is 1 known substitute for 90434A122: 4199731. Substitute compatibility should be verified for your specific system.
What is the NSN for 90434A122?
90434A122 is cataloged in the U.S. Government catalog under NSN 5305-01-654-0621. 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.