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Technical Data Sheet
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446634 — Technical Data Sheet

✓ 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: BUTTON, head_height: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.425 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, thread_length: 0.875 INCHES NOMINAL IN, fastener_length: 0.875 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-00-044-6634, 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
446634
NSN: 5305-00-044-6634
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
head_styleBUTTON
head_height0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.425 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
thread_length0.875 INCHES NOMINAL IN
screw_materialSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM OR ZINC
thread_quantity_per_inch32
NSN5305-00-044-6634
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 446634 · 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 STYLE: BUTTON
•
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.875 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD HEIGHT: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.425 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD STYLEBUTTON
FASTENER LENGTH0.875 INCHES NOMINAL IN
THREAD LENGTH0.875 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
INTERNAL DRIVE STYLESLOT
HEAD HEIGHT0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
HEAD DIAMETER0.425 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.190 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
32-01046-1Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
NAS1741-3R20Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
0010476Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
FFS92TYPE1STYLE7SInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 446634?
446634 is a SCREW,MACHINE.
What parts can replace 446634?
There are 4 known substitutes for 446634: 32-01046-1, NAS1741-3R20, 0010476 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 446634?
446634 is cataloged in the Federal Logistics Information System under NSN 5305-00-044-6634. 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.
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Last verified: October 2026