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Technical Data Sheet
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634850 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

634850: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN, fastener_length: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN, features_provided: UNFINISHED HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-360-7938, 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
634850
NSN: 5306-00-360-7938
FSC: 5306 — Bolts
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
thread_class2A A
thread_length0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
fastener_length1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
features_providedUNFINISHED HEAD
width_between_flats0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNF
NSN5306-00-360-7938
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 634850 · 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: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: UNFINISHED HEAD
•
HEAD STYLE: HEXAGON
•
WIDTH BETWEEN FLATS: 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
FASTENER LENGTH1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
THREAD LENGTH0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDUNFINISHED HEAD
HEAD STYLEHEXAGON
WIDTH BETWEEN FLATS0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNF
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 1
355499SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 634850?
634850 is a BOLT,MACHINE.
What parts can replace 634850?
There is 1 known substitute for 634850: 355499S. Substitute compatibility should be verified for your specific system.
What is the NSN for 634850?
634850 is cataloged in the U.S. Government catalog under NSN 5306-00-360-7938. 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.