PartsTable
Technical Data Sheet
Download PDF

90251A256 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90251A256: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, fastener_length: 0.375 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-641-5725, 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
90251A256
NSN: 5305-01-641-5725
FSC: 5305 — Screws
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING FEATURE
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class3A A
fastener_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.093 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5305-01-641-5725
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90251A256 · 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: 0.093 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: CUP
•
INTERNAL DRIVE STYLE: HEXAGON
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.093 INCHES NOMINAL IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLECUP
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS3A A
THREAD QUANTITY PER INCH32
MATERIALPLASTIC POLYAMIDE NYLON LOCKING FEATURE
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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 90251A256?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 90251A256?
90251A256 is a SETSCREW.
What is the NSN for 90251A256?
90251A256 is cataloged in the U.S. Government catalog under NSN 5305-01-641-5725. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 90251A256

✓ 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.