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NAS1802-4D8 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

NAS1802-4D8: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: DISHED HEXAGON, head_height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, thread_class: 3A A, hole_diameter: 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN, thread_length: 0.452 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN, screw_material: IRON ALLOY 660. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-229-5547, 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
NAS1802-4D8
NSN: 5305-01-229-5547
FSC: 5305 — Screws
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleDISHED HEXAGON
head_height0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
hole_quantity3
thread_length0.452 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
screw_materialIRON ALLOY 660
fastener_length0.484 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
NSN5305-01-229-5547
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS1802-4D8 · 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: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.484 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.452 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: DISHED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.484 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.452 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEDISHED HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA80205-NAS1802 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
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 NAS1802-4D8?
NAS1802-4D8 is a SCREW,MACHINE.
What is the NSN for NAS1802-4D8?
NAS1802-4D8 is cataloged in the U.S. Government catalog under NSN 5305-01-229-5547. 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.