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90121A622 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90121A622: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: HEXAGON, head_height: 0.234 INCHES NOMINAL IN, head_diameter: 0.562 INCHES NOMINAL IN, hole_diameter: 0.063 INCHES NOMINAL IN, thread_length: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-674-1065, 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
90121A622
NSN: 5305-01-674-1065
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleHEXAGON
head_height0.234 INCHES NOMINAL IN
head_diameter0.562 INCHES NOMINAL IN
hole_diameter0.063 INCHES NOMINAL IN
thread_length0.750 INCHES NOMINAL IN
hardness_rating60.0 ROCKWELL B NOMINAL OVERALL
special_featuresMATERIAL:18-8 STAINLESS STEEL,TENSILE STRENGTH:70,000PSI,THREAD TYPE:UNC,THREAD SPACING:COARSE,THREAD FIT:CLASS 2A,HEAD TYPE:HEXAGON,HEX PROFILE:STANDARD, DRIVE STYLE:EXTERNAL HEX,LOCKING TYPE:WIRE A
thread_directionRIGHT-HAND
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-674-1065
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90121A622 · 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
•
HEAD HEIGHT: 0.234 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES NOMINAL IN
•
HARDNESS RATING: 60.0 ROCKWELL B NOMINAL OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
COLOR: SILVER OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.234 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES NOMINAL IN
HARDNESS RATING60.0 ROCKWELL B NOMINAL OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
COLORSILVER OVERALL
SPECIAL FEATURESMATERIAL:18-8 STAINLESS STEEL,TENSILE STRENGTH:70,000PSI,THREAD TYPE:UNC,THREAD SPACING:COARSE,THREAD FIT:CLASS 2A,HEAD TYPE:HEXAGON,HEX PROFILE:STANDARD, DRIVE STYLE:EXTERNAL HEX,LOCKING TYPE:WIRE A
THREAD QUANTITY PER INCH16
MATERIALSTEEL CORROSION RESISTING 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90121A622?
90121A622 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for 90121A622?
90121A622 is cataloged in the U.S. Government catalog under NSN 5305-01-674-1065. 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.