PartsTable
Technical Data Sheet
3899257 ✓ 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: PAN, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, thread_length: 1.50 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-657-4791, 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
3899257
NSN: 5305-01-657-4791
FSC: 5305
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
head_stylePAN
head_height0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_length1.50 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length1.50 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
head_surface_treatmentWAX
end_item_identificationMRAP - M-ATV
nominal_thread_diameter0.164 INCHES IN
NSN5305-01-657-4791
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3899257 · 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: 1.50 INCHES NOMINAL IN
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
SCREW SURFACE TREATMENT: WAX
HEAD DIAMETER: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
HEAD STYLE: PAN
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
SHANK SURFACE TREATMENT: WAX
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.50 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW SURFACE TREATMENTWAX
HEAD DIAMETER0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD STYLEPAN
NOMINAL THREAD DIAMETER0.164 INCHES IN
SHANK SURFACE TREATMENTWAX
THREAD QUANTITY PER INCH32
BEARING SURFACE OF HEAD SURFACE TREATMENTWAX
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
770-4Interchangeable
interchangeable cross-reference
interchangeable
72434Interchangeable
interchangeable cross-reference
interchangeable
20Z665Interchangeable
interchangeable cross-reference
interchangeable
3AH3-201Interchangeable
interchangeable cross-reference
interchangeable
3-1-3291Interchangeable
interchangeable cross-reference
interchangeable
2810H23-028-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3899257?
3899257 is a SCREW,MACHINE.
What parts can replace 3899257?
There are 10 known substitutes for 3899257: 770-4, 72434, 20Z665 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3899257?
3899257 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-657-4791. This indicates validated use in U.S. government and defense supply chains.
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