PartsTable
Technical Data Sheet
Download PDF

Y-28446-1-4 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

Y-28446-1-4: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.369 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_length: 0.884 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN, screw_material: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-185-4536, 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
Y-28446-1-4
NSN: 5305-01-185-4536
FSC: 5305 — Screws
CAGE: 76005 — LORD CORPORATION DBA LORD CORP (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.369 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_length0.884 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
nominal_thread_diameter0.250 INCHES IN
minimum_tensile_strength170000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch20
NSN5305-01-185-4536
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: Y-28446-1-4 · 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: 0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.884 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
FASTENER LENGTH0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
THREAD LENGTH0.884 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
MINIMUM TENSILE STRENGTH170000 POUNDS PER SQUARE INCH LBS
THREAD CLASS2A A
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy Y-28446-1-4?
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 Y-28446-1-4?
Y-28446-1-4 is a SCREW,MACHINE.
What is the NSN for Y-28446-1-4?
Y-28446-1-4 is cataloged in the U.S. Government catalog under NSN 5305-01-185-4536. 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 — Y-28446-1-4

✓ 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.