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90251A531 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90251A531: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, point_diameter: 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN, fastener_length: 0.188 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-604-6956, 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
90251A531
NSN: 5305-01-604-6956
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class3A A
point_diameter0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
fastener_length0.188 INCHES NOMINAL IN
locking_featurePATCH LOCKING FEATURE
thread_directionRIGHT-HAND
width_across_flats0.125 INCHES NOMINAL IN
point_chamfer_angle118.0 DEGREES NOMINAL
internal_drive_styleHEXAGON
nominal_thread_diameter0.250 INCHES IN
NSN5305-01-604-6956
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90251A531 · 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
•
POINT DIAMETER: 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.125 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.188 INCHES NOMINAL IN
•
POINT CHAMFER ANGLE: 118.0 DEGREES NOMINAL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: CUP
TECHNICAL CHARACTERISTICS
POINT DIAMETER0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.125 INCHES NOMINAL IN
FASTENER LENGTH0.188 INCHES NOMINAL IN
POINT CHAMFER ANGLE118.0 DEGREES NOMINAL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLECUP
LOCKING FEATUREPATCH LOCKING FEATURE
INTERNAL DRIVE STYLEHEXAGON
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90251A531?
90251A531 is a SETSCREW.
What is the NSN for 90251A531?
90251A531 is cataloged in the U.S. Government catalog under NSN 5305-01-604-6956. 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.