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Technical Data Sheet
PartsTable / COMPONENT / F591-73-81PC76
F591-73-81PC76 ✓ 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 RING,RETAINING 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 5325-00-885-3769, 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
F591-73-81PC76
NSN: 5325-00-885-3769
FSC: 5325
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
Part NumberF591-73-81PC76
NSN5325-00-885-3769
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: F591-73-81PC76 · 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 14
6266Interchangeable
interchangeable cross-reference
interchangeable
20C00001Interchangeable
interchangeable cross-reference
interchangeable
CM2749Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
6266NInterchangeable
interchangeable cross-reference
interchangeable
AS6248Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F591-73-81PC76?
F591-73-81PC76 is a RING,RETAINING.
What parts can replace F591-73-81PC76?
There are 14 known substitutes for F591-73-81PC76: 6266, 20C00001, CM2749 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F591-73-81PC76?
F591-73-81PC76 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-885-3769. 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