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721-8217295-35 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

721-8217295-35: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_height: 0.365 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.510 INCHES NOMINAL IN, screw_material: COPPER ALLOY, fastener_length: 0.635 INCHES NOMINAL IN, special_features: HEAD ACORN HEXAGON;UNDERCUT .125 INCHES LONG AND .284 INCHES IN DIAMETER;MATERIAL UNSC63200 IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-629-3908, 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
721-8217295-35
NSN: 5305-01-629-3908
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
head_height0.365 INCHES NOMINAL IN
thread_class2A A
thread_length0.510 INCHES NOMINAL IN
screw_materialCOPPER ALLOY
fastener_length0.635 INCHES NOMINAL IN
special_featuresHEAD ACORN HEXAGON;UNDERCUT .125 INCHES LONG AND .284 INCHES IN DIAMETER;MATERIAL UNSC63200 IN
thread_directionRIGHT-HAND
width_between_flats0.500 INCHES NOMINAL IN
end_item_identificationBRACKET ASSEMBLY
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-629-3908
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 721-8217295-35 · 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: 0.365 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.635 INCHES NOMINAL IN
•
THREAD LENGTH: 0.510 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.500 INCHES NOMINAL IN
•
SCREW MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.365 INCHES NOMINAL IN
FASTENER LENGTH0.635 INCHES NOMINAL IN
THREAD LENGTH0.510 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
SCREW MATERIALCOPPER ALLOY
SPECIAL FEATURESHEAD ACORN HEXAGON;UNDERCUT .125 INCHES LONG AND .284 INCHES IN DIAMETER;MATERIAL UNSC63200 IN
PART NAME ASSIGNED BY CONTROLLING AGENCYHEAD, SMALL PLUNGER
THREAD CLASS2A A
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 1
H861-8000-35Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 721-8217295-35?
721-8217295-35 is a SCREW,MACHINE.
What parts can replace 721-8217295-35?
There is 1 known substitute for 721-8217295-35: H861-8000-35. Substitute compatibility should be verified for your specific system.
What is the NSN for 721-8217295-35?
721-8217295-35 is cataloged in the U.S. Government catalog under NSN 5305-01-629-3908. 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.