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8216644 — CONNECTING LINK,RIGID

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8216644: CONNECTING LINK,RIGID.

The CONNECTING LINK,RIGID is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-721-4104, 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
8216644
NSN: 5310-01-721-4104
NIINs: 017214104, 017215140, 017215153, 017222092, 017222846, 017248736, 017248795, 017248812, 017249089, 017250620, 017250631
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number8216644
NSN5310-01-721-4104
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8216644 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 4
223-8216644-137Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
69-28-0625AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
M1222N1N10C20CHNNSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
H751-0511-137Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8216644?
8216644 is a CONNECTING LINK,RIGID.
What parts can replace 8216644?
There are 4 known substitutes for 8216644: 223-8216644-137, 69-28-0625A, M1222N1N10C20CHNN and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8216644?
8216644 is cataloged in the U.S. Government catalog under NSN 5310-01-721-4104. 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.