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518902-1 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

518902-1: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include hole_type: DRILLED, head_style: HEXAGON, grip_length: 0.910 INCHES NOMINAL IN, head_height: 0.186 INCHES NOMINAL IN, thread_class: 2A A, grip_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-559-6439, 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
518902-1
NSN: 5306-01-559-6439
FSC: 5306 — Bolts
CAGE: 64694 — TELEPHONICS CORPORATION (USA)
SPECIFICATIONS
hole_typeDRILLED
head_styleHEXAGON
grip_length0.910 INCHES NOMINAL IN
head_height0.186 INCHES NOMINAL IN
thread_class2A A
grip_diameter0.250 INCHES NOMINAL IN
hole_diameter0.050 INCHES NOMINAL IN
hole_quantity1
thread_length0.375 INCHES NOMINAL IN
fastener_length1.285 INCHES NOMINAL IN
special_featuresONE HOLE DRILLED THROUGH CENTER OF HEAD
thread_directionRIGHT-HAND
NSN5306-01-559-6439
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 518902-1 · 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: 0.186 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.285 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.910 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.500 INCHES NOMINAL IN
•
GRIP DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.186 INCHES NOMINAL IN
FASTENER LENGTH1.285 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES NOMINAL IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.910 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
GRIP DIAMETER0.250 INCHES NOMINAL IN
SPECIAL FEATURESONE HOLE DRILLED THROUGH CENTER OF HEAD
THREAD CLASS2A A
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 518902-1?
518902-1 is a BOLT,MACHINE.
What is the NSN for 518902-1?
518902-1 is cataloged in the U.S. Government catalog under NSN 5306-01-559-6439. 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.