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91290A154 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91290A154: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 12.9 OVERALL, head_height: 4.0 MILLIMETERS NOMINAL MM, fastener_length: 20.0 MILLIMETERS NOMINAL MM, width_across_flats: 3.0 MILLIMETERS NOMINAL MM, width_between_flats: 7.0 MILLIMETERS NOMINAL MM, internal_drive_style: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-412-4311, 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
91290A154
NSN: 5305-01-412-4311
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 12.9 OVERALL
head_height4.0 MILLIMETERS NOMINAL MM
fastener_length20.0 MILLIMETERS NOMINAL MM
width_across_flats3.0 MILLIMETERS NOMINAL MM
width_between_flats7.0 MILLIMETERS NOMINAL MM
internal_drive_styleHEXAGON
NSN5305-01-412-4311
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91290A154 · 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: 3.0 MILLIMETERS NOMINAL MM
•
HEAD HEIGHT: 4.0 MILLIMETERS NOMINAL MM
•
FASTENER LENGTH: 20.0 MILLIMETERS NOMINAL MM
•
WIDTH BETWEEN FLATS: 7.0 MILLIMETERS NOMINAL MM
•
COLOR: BLACK OVERALL
•
INTERNAL DRIVE STYLE: HEXAGON
•
MATERIAL: STEEL PROPERTY CLASS 12.9 OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS3.0 MILLIMETERS NOMINAL MM
HEAD HEIGHT4.0 MILLIMETERS NOMINAL MM
FASTENER LENGTH20.0 MILLIMETERS NOMINAL MM
WIDTH BETWEEN FLATS7.0 MILLIMETERS NOMINAL MM
COLORBLACK OVERALL
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL PROPERTY CLASS 12.9 OVERALL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91290A154?
91290A154 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 91290A154?
91290A154 is cataloged in the U.S. Government catalog under NSN 5305-01-412-4311. 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.