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PartsTable / COMPONENT / R820105 PIECE 25
R820105 PIECE 25 ✓ 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 R820105 PIECE 25 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-186-1087, 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
R820105 PIECE 25
NSN: 5305-01-186-1087
FSC: 5305
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
Part NumberR820105 PIECE 25
NSN5305-01-186-1087
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: R820105 PIECE 25 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
AT7781Interchangeable
interchangeable cross-reference
interchangeable
7781Interchangeable
interchangeable cross-reference
interchangeable
Y0171S5100-455474PC51Interchangeable
interchangeable cross-reference
interchangeable
S5100-403779ITEM51Interchangeable
interchangeable cross-reference
interchangeable
1184-1IN.Interchangeable
interchangeable cross-reference
interchangeable
GGG-A-450 TY2SZ2-1/2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R820105 PIECE 25?
R820105 PIECE 25 is a R820105 PIECE 25.
What parts can replace R820105 PIECE 25?
There are 12 known substitutes for R820105 PIECE 25: AT7781, 7781, Y0171S5100-455474PC51 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R820105 PIECE 25?
R820105 PIECE 25 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-186-1087. 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.
PartsTable Design LLC · partstable.com
Last verified: July 2026