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Technical Data Sheet
PartsTable / COMPONENT / 643LX
643LX ✓ 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 STUD,SNAPSLIDE FASTENER is a the manufacturer industrial component. Key specifications include surface_treatment: PHOSPHATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-697-8054, 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
643LX
NSN: 5325-00-697-8054
FSC: 5325
CAGE: 27361 — BURKE PRODUCTS INC (USA)
SPECIFICATIONS
surface_treatmentPHOSPHATE OVERALL
NSN5325-00-697-8054
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 643LX · 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
•
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPHOSPHATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
1165-4Interchangeable
interchangeable cross-reference
interchangeable
5616-1Interchangeable
interchangeable cross-reference
interchangeable
PNS200-3PC2Interchangeable
interchangeable cross-reference
interchangeable
PNS200-17PC2Interchangeable
interchangeable cross-reference
interchangeable
PNS200-10PC2Interchangeable
interchangeable cross-reference
interchangeable
B94.9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 643LX?
643LX is a STUD,SNAPSLIDE FASTENER.
What parts can replace 643LX?
There are 8 known substitutes for 643LX: 1165-4, 5616-1, PNS200-3PC2 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 643LX?
643LX is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-697-8054. 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