PartsTable
Technical Data Sheet
Download PDF

MC90298A575 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MC90298A575: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 18.8 OVERALL, head_style: FLAT FILLISTER, head_height: 0.218 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.437 INCHES NOMINAL IN, thread_length: 0.437 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-601-4263, 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
MC90298A575
NSN: 5305-01-601-4263
FSC: 5305 — Screws
CAGE: 1PN61 — DILLON AERO, INC. (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
head_styleFLAT FILLISTER
head_height0.218 INCHES NOMINAL IN
thread_class3A A
head_diameter0.437 INCHES NOMINAL IN
thread_length0.437 INCHES NOMINAL IN
shoulder_shapeROUND ALL SHOULDERS
fastener_length0.750 INCHES NOMINAL IN
hardness_rating55.0 ROCKWELL B MINIMUM OVERALL
shoulder_length0.437 INCHES NOMINAL ALL SHOULDERS IN
thread_directionRIGHT-HAND
shoulder_diameter0.437 INCHES NOMINAL ALL SHOULDERS IN
NSN5305-01-601-4263
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MC90298A575 · 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
•
WIDTH ACROSS FLATS: 0.156 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.218 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.437 INCHES NOMINAL ALL SHOULDERS IN
•
SHOULDER DIAMETER: 0.437 INCHES NOMINAL ALL SHOULDERS IN
•
THREAD LENGTH: 0.437 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND ALL SHOULDERS
•
HARDNESS RATING: 55.0 ROCKWELL B MINIMUM OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.156 INCHES NOMINAL IN
HEAD HEIGHT0.218 INCHES NOMINAL IN
FASTENER LENGTH0.750 INCHES NOMINAL IN
SHOULDER LENGTH0.437 INCHES NOMINAL ALL SHOULDERS IN
SHOULDER DIAMETER0.437 INCHES NOMINAL ALL SHOULDERS IN
THREAD LENGTH0.437 INCHES NOMINAL IN
SHOULDER SHAPEROUND ALL SHOULDERS
HARDNESS RATING55.0 ROCKWELL B MINIMUM OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT FILLISTER
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy MC90298A575?
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 MC90298A575?
MC90298A575 is a SCREW,SHOULDER.
What is the NSN for MC90298A575?
MC90298A575 is cataloged in the U.S. Government catalog under NSN 5305-01-601-4263. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MC90298A575

✓ 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.