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91259A628 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91259A628: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DRIVE, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.563 INCHES NOMINAL IN, thread_length: 0.5 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-599-9795, 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
91259A628
NSN: 5305-01-599-9795
FSC: 5305 — Screws
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDRIVE
head_height0.250 INCHES NOMINAL IN
thread_class3A A
head_diameter0.563 INCHES NOMINAL IN
thread_length0.5 INCHES NOMINAL IN
fastener_length2.250 INCHES NOMINAL IN
shoulder_length1.5 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
shoulder_diameter0.375 INCHES NOMINAL OVERALL IN
width_across_flats0.188 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-599-9795
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91259A628 · 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: 0.188 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.250 INCHES NOMINAL IN
•
SHOULDER LENGTH: 1.5 INCHES NOMINAL OVERALL IN
•
SHOULDER DIAMETER: 0.375 INCHES NOMINAL OVERALL IN
•
THREAD LENGTH: 0.5 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.313 INCHES IN
•
HEAD STYLE: DRIVE
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH2.250 INCHES NOMINAL IN
SHOULDER LENGTH1.5 INCHES NOMINAL OVERALL IN
SHOULDER DIAMETER0.375 INCHES NOMINAL OVERALL IN
THREAD LENGTH0.5 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.313 INCHES IN
HEAD STYLEDRIVE
THREAD DIRECTIONRIGHT-HAND
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91259A628?
91259A628 is a SCREW,SHOULDER.
What is the NSN for 91259A628?
91259A628 is cataloged in the U.S. Government catalog under NSN 5305-01-599-9795. 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.