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PartsTable / COMPONENT / NAS388-4-10
NAS388-4-10 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: OVAL COUNTERSUNK, thread_class: 2A A, head_diameter: 0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, thread_length: 0.484 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN, screw_material: STEEL, fastener_length: 0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-112-0276, 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
NAS388-4-10
NSN: 5305-01-112-0276
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleOVAL COUNTERSUNK
thread_class2A A
head_diameter0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
thread_length0.484 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.112 INCHES IN
screw_surface_treatmentCADMIUM
thread_quantity_per_inch40
NSN5305-01-112-0276
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS388-4-10 · 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
•
SCREW SURFACE TREATMENT: CADMIUM
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
•
HEAD DIAMETER: 0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.484 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
SCREW SURFACE TREATMENTCADMIUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
HEAD DIAMETER0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
THREAD LENGTH0.484 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
FASTENER LENGTH0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS2A A
THREAD QUANTITY PER INCH40
SCREW MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MS35206-243Interchangeable
interchangeable cross-reference
interchangeable
AN526-832-6Interchangeable
interchangeable cross-reference
interchangeable
6-2001-23Interchangeable
interchangeable cross-reference
interchangeable
857556-00Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS388-4-10?
NAS388-4-10 is a SCREW,MACHINE.
What parts can replace NAS388-4-10?
There are 4 known substitutes for NAS388-4-10: MS35206-243, AN526-832-6, 6-2001-23 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS388-4-10?
NAS388-4-10 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-112-0276. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026