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90278A344 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90278A344: 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: 6.0 MILLIMETERS NOMINAL MM, head_diameter: 12.0 MILLIMETERS NOMINAL MM, thread_length: 11.0 MILLIMETERS NOMINAL MM, fastener_length: 23.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-653-1014, 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
90278A344
NSN: 5305-01-653-1014
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
head_styleFLAT FILLISTER
head_height6.0 MILLIMETERS NOMINAL MM
head_diameter12.0 MILLIMETERS NOMINAL MM
thread_length11.0 MILLIMETERS NOMINAL MM
fastener_length23.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
width_across_flats4.0 MILLIMETERS NOMINAL MM
internal_drive_styleHEXAGON
nominal_thread_diameter6.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters1.0
NSN5305-01-653-1014
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90278A344 · 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: 4.0 MILLIMETERS NOMINAL MM
•
HEAD HEIGHT: 6.0 MILLIMETERS NOMINAL MM
•
FASTENER LENGTH: 23.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 1.0
•
THREAD LENGTH: 11.0 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 6.0 MILLIMETERS MM
•
HEAD STYLE: FLAT FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS4.0 MILLIMETERS NOMINAL MM
HEAD HEIGHT6.0 MILLIMETERS NOMINAL MM
FASTENER LENGTH23.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS1.0
THREAD LENGTH11.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER6.0 MILLIMETERS MM
HEAD STYLEFLAT FILLISTER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYTIGHT-TOLERANCE SHOULDER SCREW
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90278A344?
90278A344 is a SCREW,SHOULDER.
What is the NSN for 90278A344?
90278A344 is cataloged in the U.S. Government catalog under NSN 5305-01-653-1014. This indicates validated use in U.S. government and defense supply chains.
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