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90128A241 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90128A241: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.3750 INCHES NOMINAL IN, thread_length: 0.3750 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-626-0472, 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
90128A241
NSN: 5305-01-626-0472
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
thread_class3A A
head_diameter0.3750 INCHES NOMINAL IN
thread_length0.3750 INCHES NOMINAL IN
fastener_length0.3750 INCHES NOMINAL IN
hardness_rating47.0 ROCKWELL C MINIMUM OVERALL
special_featuresMATERIAL: STRONGER THAN GRADE 8 ALLOY STEEL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.1875 INCHES NOMINAL IN
NSN5305-01-626-0472
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90128A241 · 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: 0.1875 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.3750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.3750 INCHES NOMINAL IN
•
HARDNESS RATING: 47.0 ROCKWELL C MINIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.25 INCHES IN
•
HEAD STYLE: KNURLED NO. 1
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.1875 INCHES NOMINAL IN
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH0.3750 INCHES NOMINAL IN
THREAD LENGTH0.3750 INCHES NOMINAL IN
HARDNESS RATING47.0 ROCKWELL C MINIMUM OVERALL
NOMINAL THREAD DIAMETER0.25 INCHES IN
HEAD STYLEKNURLED NO. 1
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESMATERIAL: STRONGER THAN GRADE 8 ALLOY STEEL
SURFACE TREATMENTZINC OVERALL
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

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
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FREQUENTLY ASKED QUESTIONS
What is 90128A241?
90128A241 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 90128A241?
90128A241 is cataloged in the U.S. Government catalog under NSN 5305-01-626-0472. 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.