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90298A587 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90298A587: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FILLISTER, thread_class: 2A A, thread_length: 0.438 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 1.938 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-374-1089, 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
90298A587
NSN: 5305-01-374-1089
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFILLISTER
thread_class2A A
thread_length0.438 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.938 INCHES NOMINAL IN
shoulder_length1.500 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.312 INCHES NOMINAL FIRST SHOULDER IN
width_across_flats0.156 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.250 INCHES IN
NSN5305-01-374-1089
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90298A587 · 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
•
FASTENER LENGTH: 1.938 INCHES NOMINAL IN
•
SHOULDER LENGTH: 1.500 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.312 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.438 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FILLISTER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.156 INCHES NOMINAL IN
FASTENER LENGTH1.938 INCHES NOMINAL IN
SHOULDER LENGTH1.500 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.312 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.438 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHEXAGON
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
940-22883Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3924666C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90298A587?
90298A587 is a SCREW,SHOULDER.
What parts can replace 90298A587?
There are 2 known substitutes for 90298A587: 940-22883, 3924666C1. Substitute compatibility should be verified for your specific system.
What is the NSN for 90298A587?
90298A587 is cataloged in the U.S. Government catalog under NSN 5305-01-374-1089. 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.