PartsTable
Technical Data Sheet
Download PDF

3300388 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3300388: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, screw_material: STEEL CORROSION RESISTING, fastener_length: 1.250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, countersink_angle: 82.000 DEGREES NOMINAL, internal_drive_style: CROSS RECESS TYPE 1. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-671-5222, 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
3300388
NSN: 5305-01-671-5222
FSC: 5305 — Screws
CAGE: 0D1M0 — HAMILTON ASSOCIATES INC DIV AIR TECHNIQUES INTERNATIONAL (ATI) (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
screw_materialSTEEL CORROSION RESISTING
fastener_length1.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle82.000 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE 1
end_item_identificationAIRCRAFT FLIGHT
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch28
part_name_assigned_by_controlling_agencyBACK PRESSURE COVER SCREW
NSN5305-01-671-5222
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3300388 · 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
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
COUNTERSINK ANGLE: 82.000 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL CORROSION RESISTING
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE82.000 DEGREES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYBACK PRESSURE COVER SCREW
END ITEM IDENTIFICATIONAIRCRAFT FLIGHT
THREAD QUANTITY PER INCH28
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 3300388?
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 3300388?
3300388 is a SCREW,MACHINE.
What is the NSN for 3300388?
3300388 is cataloged in the U.S. Government catalog under NSN 5305-01-671-5222. 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 — 3300388

✓ 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.