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PartsTable / COMPONENT / AL6951-4-3
AL6951-4-3 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 3.000 INCHES NOMINAL IN, special_features: MATERIAL TEMPER T3 OR T4, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, width_across_flats: 0.250 INCHES NOMINAL IN, cross-sectional_shape: HEXAGON. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-545-6767, 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
AL6951-4-3
NSN: 5340-00-545-6767
FSC: 5340
CAGE: 05791 — LYN-TRON, INC. DBA LYN-TRON INC (USA)
SPECIFICATIONS
length3.000 INCHES NOMINAL IN
special_featuresMATERIAL TEMPER T3 OR T4
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
width_across_flats0.250 INCHES NOMINAL IN
cross-sectional_shapeHEXAGON
NSN5340-00-545-6767
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AL6951-4-3 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
LENGTH: 3.000 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
SPECIAL FEATURESMATERIAL TEMPER T3 OR T4
LENGTH3.000 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
84-13Upgraded Successor
successor cross-reference
successor
B6812Upgraded Successor
successor cross-reference
successor
11684633Upgraded Successor
successor cross-reference
successor
A-A-59214Interchangeable
interchangeable cross-reference
interchangeable
724Interchangeable
interchangeable cross-reference
interchangeable
0N09571Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AL6951-4-3?
AL6951-4-3 is a STANDOFF,THREADED,SPACING.
What parts can replace AL6951-4-3?
There are 16 known substitutes for AL6951-4-3: 84-13, B6812, 11684633 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AL6951-4-3?
AL6951-4-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-545-6767. 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